./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe018_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe018_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:03:31,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:03:31,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:03:31,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:03:31,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:03:31,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:03:31,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:03:31,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:03:31,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:03:31,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:03:31,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:03:31,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:03:31,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:03:31,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:03:31,261 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:03:31,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:03:31,262 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:03:31,264 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:03:31,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:03:31,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:03:31,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:03:31,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:03:31,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:03:31,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:03:31,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:03:31,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:03:31,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:03:31,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:03:31,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:03:31,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:03:31,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:03:31,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:03:31,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:03:31,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:03:31,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:03:31,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:03:31,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:03:31,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:03:31,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:03:31,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:03:31,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:03:31,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:03:31,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:03:31,272 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:03:31,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:03:31,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:03:31,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:03:31,483 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:03:31,484 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:03:31,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe018_power.oepc.yml/witness.yml [2024-06-28 02:03:31,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:03:31,702 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:03:31,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i [2024-06-28 02:03:32,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:03:32,922 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:03:32,922 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i [2024-06-28 02:03:32,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09bdec80b/ca79e44755e9408bae038ea237a1510d/FLAG009d60d53 [2024-06-28 02:03:32,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09bdec80b/ca79e44755e9408bae038ea237a1510d [2024-06-28 02:03:32,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:03:32,961 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:03:32,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:03:32,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:03:32,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:03:32,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:03:31" (1/2) ... [2024-06-28 02:03:32,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66785b0b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:03:32, skipping insertion in model container [2024-06-28 02:03:32,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:03:31" (1/2) ... [2024-06-28 02:03:32,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b2c9880 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:03:32, skipping insertion in model container [2024-06-28 02:03:32,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:03:32" (2/2) ... [2024-06-28 02:03:32,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66785b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:32, skipping insertion in model container [2024-06-28 02:03:32,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:03:32" (2/2) ... [2024-06-28 02:03:32,971 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:03:33,093 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:03:33,094 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 02:03:33,094 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 02:03:33,094 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 02:03:33,094 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:03:33,094 INFO L106 edCorrectnessWitness]: ghost_update [L833-L833] multithreaded = 1; [2024-06-28 02:03:33,132 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:03:33,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i[995,1008] [2024-06-28 02:03:33,422 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:03:33,431 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:03:33,462 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:03:33,564 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:03:33,627 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:03:33,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33 WrapperNode [2024-06-28 02:03:33,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:03:33,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:03:33,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:03:33,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:03:33,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,697 INFO L138 Inliner]: procedures = 175, calls = 79, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 206 [2024-06-28 02:03:33,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:03:33,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:03:33,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:03:33,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:03:33,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,738 INFO L175 MemorySlicer]: Split 41 memory accesses to 2 slices as follows [2, 39]. 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 02:03:33,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:03:33,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:03:33,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:03:33,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:03:33,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (1/1) ... [2024-06-28 02:03:33,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:03:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:03:33,833 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 02:03:33,837 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 02:03:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 02:03:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 02:03:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 02:03:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 02:03:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:03:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:03:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:03:33,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:03:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:03:33,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:03:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:03:33,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:03:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:03:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:03:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:03:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:03:33,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:03:33,882 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 02:03:34,036 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:03:34,037 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:03:34,471 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:03:34,471 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:03:34,818 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:03:34,819 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:03:34,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:03:34 BoogieIcfgContainer [2024-06-28 02:03:34,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:03:34,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:03:34,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:03:34,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:03:34,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:03:31" (1/4) ... [2024-06-28 02:03:34,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cba990 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:03:34, skipping insertion in model container [2024-06-28 02:03:34,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:03:32" (2/4) ... [2024-06-28 02:03:34,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cba990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:03:34, skipping insertion in model container [2024-06-28 02:03:34,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:33" (3/4) ... [2024-06-28 02:03:34,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cba990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:03:34, skipping insertion in model container [2024-06-28 02:03:34,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:03:34" (4/4) ... [2024-06-28 02:03:34,826 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_power.oepc.i [2024-06-28 02:03:34,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:03:34,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 02:03:34,841 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:03:34,915 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:03:34,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 02:03:34,980 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 02:03:34,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:03:34,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 02:03:34,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 02:03:34,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-28 02:03:35,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:03:35,009 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;@4b3356bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:03:35,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 02:03:35,016 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:03:35,016 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:03:35,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:03:35,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:35,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:03:35,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:35,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash 710625826, now seen corresponding path program 1 times [2024-06-28 02:03:35,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:35,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163105529] [2024-06-28 02:03:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:35,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:36,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:36,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163105529] [2024-06-28 02:03:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163105529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:36,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:36,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:03:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214193612] [2024-06-28 02:03:36,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:36,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:03:36,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:36,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:03:36,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:03:36,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 02:03:36,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:36,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:36,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 02:03:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:37,447 INFO L124 PetriNetUnfolderBase]: 1706/2758 cut-off events. [2024-06-28 02:03:37,447 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-06-28 02:03:37,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5329 conditions, 2758 events. 1706/2758 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15417 event pairs, 1011 based on Foata normal form. 0/2653 useless extension candidates. Maximal degree in co-relation 5317. Up to 2510 conditions per place. [2024-06-28 02:03:37,463 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 02:03:37,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 223 flow [2024-06-28 02:03:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:03:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:03:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-28 02:03:37,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 02:03:37,473 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 92 transitions. [2024-06-28 02:03:37,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 223 flow [2024-06-28 02:03:37,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:37,477 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-06-28 02:03:37,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 02:03:37,490 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-28 02:03:37,491 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-06-28 02:03:37,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:37,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:37,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:37,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:03:37,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:37,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 12579745, now seen corresponding path program 1 times [2024-06-28 02:03:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:37,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956120910] [2024-06-28 02:03:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956120910] [2024-06-28 02:03:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956120910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:39,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:39,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:03:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432550996] [2024-06-28 02:03:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:39,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:03:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:03:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:03:39,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 02:03:39,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:39,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:39,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 02:03:39,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:40,240 INFO L124 PetriNetUnfolderBase]: 1700/2638 cut-off events. [2024-06-28 02:03:40,240 INFO L125 PetriNetUnfolderBase]: For 498/508 co-relation queries the response was YES. [2024-06-28 02:03:40,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5945 conditions, 2638 events. 1700/2638 cut-off events. For 498/508 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14245 event pairs, 665 based on Foata normal form. 6/2640 useless extension candidates. Maximal degree in co-relation 5933. Up to 2468 conditions per place. [2024-06-28 02:03:40,254 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 59 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-28 02:03:40,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 351 flow [2024-06-28 02:03:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:03:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:03:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 02:03:40,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6793478260869565 [2024-06-28 02:03:40,257 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 4 states and 125 transitions. [2024-06-28 02:03:40,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 351 flow [2024-06-28 02:03:40,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:40,259 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 186 flow [2024-06-28 02:03:40,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 02:03:40,259 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-06-28 02:03:40,260 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 186 flow [2024-06-28 02:03:40,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:40,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:40,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:40,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:03:40,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:40,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:40,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1102283725, now seen corresponding path program 1 times [2024-06-28 02:03:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:40,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010427416] [2024-06-28 02:03:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:40,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010427416] [2024-06-28 02:03:43,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010427416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:43,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:43,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:03:43,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863432673] [2024-06-28 02:03:43,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:43,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:03:43,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:43,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:03:43,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:03:43,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 02:03:43,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 02:03:43,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:43,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 02:03:43,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:44,176 INFO L124 PetriNetUnfolderBase]: 2164/3296 cut-off events. [2024-06-28 02:03:44,176 INFO L125 PetriNetUnfolderBase]: For 1910/1940 co-relation queries the response was YES. [2024-06-28 02:03:44,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8379 conditions, 3296 events. 2164/3296 cut-off events. For 1910/1940 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17462 event pairs, 489 based on Foata normal form. 15/3308 useless extension candidates. Maximal degree in co-relation 8364. Up to 3035 conditions per place. [2024-06-28 02:03:44,193 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 86 selfloop transitions, 15 changer transitions 0/110 dead transitions. [2024-06-28 02:03:44,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 110 transitions, 542 flow [2024-06-28 02:03:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-28 02:03:44,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6485507246376812 [2024-06-28 02:03:44,196 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 186 flow. Second operand 6 states and 179 transitions. [2024-06-28 02:03:44,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 110 transitions, 542 flow [2024-06-28 02:03:44,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 110 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 02:03:44,199 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 256 flow [2024-06-28 02:03:44,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-28 02:03:44,200 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-06-28 02:03:44,200 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 256 flow [2024-06-28 02:03:44,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 02:03:44,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:44,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:44,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:03:44,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:44,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash 946903071, now seen corresponding path program 1 times [2024-06-28 02:03:44,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:44,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223789973] [2024-06-28 02:03:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:44,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:45,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223789973] [2024-06-28 02:03:45,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223789973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:45,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:45,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:03:45,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257517039] [2024-06-28 02:03:45,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:45,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:03:45,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:03:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:03:45,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:03:45,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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 02:03:45,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:45,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:03:45,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:46,621 INFO L124 PetriNetUnfolderBase]: 2584/4076 cut-off events. [2024-06-28 02:03:46,621 INFO L125 PetriNetUnfolderBase]: For 3856/3856 co-relation queries the response was YES. [2024-06-28 02:03:46,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 4076 events. 2584/4076 cut-off events. For 3856/3856 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22900 event pairs, 1004 based on Foata normal form. 2/4076 useless extension candidates. Maximal degree in co-relation 10975. Up to 3735 conditions per place. [2024-06-28 02:03:46,642 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 67 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-28 02:03:46,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 500 flow [2024-06-28 02:03:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:03:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:03:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 02:03:46,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-06-28 02:03:46,645 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 256 flow. Second operand 5 states and 119 transitions. [2024-06-28 02:03:46,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 500 flow [2024-06-28 02:03:46,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 467 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:46,651 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 311 flow [2024-06-28 02:03:46,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-06-28 02:03:46,652 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-06-28 02:03:46,653 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 311 flow [2024-06-28 02:03:46,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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 02:03:46,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:46,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:46,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:03:46,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:46,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash -637105240, now seen corresponding path program 1 times [2024-06-28 02:03:46,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:46,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603097337] [2024-06-28 02:03:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:48,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603097337] [2024-06-28 02:03:48,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603097337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:48,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:48,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:48,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200117357] [2024-06-28 02:03:48,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:48,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:48,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:48,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:48,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:48,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:03:48,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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 02:03:48,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:48,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:03:48,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:50,114 INFO L124 PetriNetUnfolderBase]: 2615/3933 cut-off events. [2024-06-28 02:03:50,114 INFO L125 PetriNetUnfolderBase]: For 4950/4950 co-relation queries the response was YES. [2024-06-28 02:03:50,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11729 conditions, 3933 events. 2615/3933 cut-off events. For 4950/4950 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 20941 event pairs, 762 based on Foata normal form. 2/3931 useless extension candidates. Maximal degree in co-relation 11706. Up to 3693 conditions per place. [2024-06-28 02:03:50,138 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 91 selfloop transitions, 19 changer transitions 0/117 dead transitions. [2024-06-28 02:03:50,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 718 flow [2024-06-28 02:03:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 02:03:50,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-06-28 02:03:50,144 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 311 flow. Second operand 6 states and 154 transitions. [2024-06-28 02:03:50,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 718 flow [2024-06-28 02:03:50,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 710 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:50,150 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 444 flow [2024-06-28 02:03:50,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-28 02:03:50,151 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2024-06-28 02:03:50,151 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 444 flow [2024-06-28 02:03:50,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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 02:03:50,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:50,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:50,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:03:50,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:50,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash -600946840, now seen corresponding path program 2 times [2024-06-28 02:03:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853742761] [2024-06-28 02:03:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:52,215 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 02:03:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:52,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853742761] [2024-06-28 02:03:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853742761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:52,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684026451] [2024-06-28 02:03:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:52,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:03:52,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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 02:03:52,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:52,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:03:52,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:53,486 INFO L124 PetriNetUnfolderBase]: 2610/3936 cut-off events. [2024-06-28 02:03:53,486 INFO L125 PetriNetUnfolderBase]: For 7529/7538 co-relation queries the response was YES. [2024-06-28 02:03:53,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12953 conditions, 3936 events. 2610/3936 cut-off events. For 7529/7538 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21075 event pairs, 766 based on Foata normal form. 8/3940 useless extension candidates. Maximal degree in co-relation 12925. Up to 3688 conditions per place. [2024-06-28 02:03:53,514 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 86 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2024-06-28 02:03:53,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 114 transitions, 773 flow [2024-06-28 02:03:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:03:53,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 02:03:53,517 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 444 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:03:53,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 114 transitions, 773 flow [2024-06-28 02:03:53,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 114 transitions, 761 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:53,528 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 514 flow [2024-06-28 02:03:53,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-06-28 02:03:53,531 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2024-06-28 02:03:53,531 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 514 flow [2024-06-28 02:03:53,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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 02:03:53,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:53,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:53,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:03:53,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:53,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash -559156642, now seen corresponding path program 1 times [2024-06-28 02:03:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:53,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675189616] [2024-06-28 02:03:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:55,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675189616] [2024-06-28 02:03:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675189616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:55,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:55,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277126346] [2024-06-28 02:03:55,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:55,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:55,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:55,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:03:55,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 514 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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 02:03:55,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:55,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:03:55,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:56,389 INFO L124 PetriNetUnfolderBase]: 2602/4102 cut-off events. [2024-06-28 02:03:56,389 INFO L125 PetriNetUnfolderBase]: For 8138/8138 co-relation queries the response was YES. [2024-06-28 02:03:56,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13255 conditions, 4102 events. 2602/4102 cut-off events. For 8138/8138 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23030 event pairs, 882 based on Foata normal form. 4/4104 useless extension candidates. Maximal degree in co-relation 13223. Up to 3721 conditions per place. [2024-06-28 02:03:56,413 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 92 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-28 02:03:56,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 112 transitions, 816 flow [2024-06-28 02:03:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 02:03:56,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-06-28 02:03:56,415 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 514 flow. Second operand 6 states and 143 transitions. [2024-06-28 02:03:56,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 112 transitions, 816 flow [2024-06-28 02:03:56,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 112 transitions, 795 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:03:56,424 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 553 flow [2024-06-28 02:03:56,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=553, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-06-28 02:03:56,425 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 30 predicate places. [2024-06-28 02:03:56,425 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 553 flow [2024-06-28 02:03:56,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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 02:03:56,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:56,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:56,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:03:56,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:56,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash -160664821, now seen corresponding path program 1 times [2024-06-28 02:03:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:56,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955197223] [2024-06-28 02:03:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955197223] [2024-06-28 02:03:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955197223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591359255] [2024-06-28 02:03:58,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:58,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:58,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:58,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:58,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:03:58,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 553 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:58,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:03:58,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:00,173 INFO L124 PetriNetUnfolderBase]: 2656/4034 cut-off events. [2024-06-28 02:04:00,174 INFO L125 PetriNetUnfolderBase]: For 10399/10399 co-relation queries the response was YES. [2024-06-28 02:04:00,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13902 conditions, 4034 events. 2656/4034 cut-off events. For 10399/10399 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 22159 event pairs, 634 based on Foata normal form. 3/4035 useless extension candidates. Maximal degree in co-relation 13868. Up to 3689 conditions per place. [2024-06-28 02:04:00,195 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 109 selfloop transitions, 24 changer transitions 0/140 dead transitions. [2024-06-28 02:04:00,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 140 transitions, 991 flow [2024-06-28 02:04:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:04:00,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2024-06-28 02:04:00,197 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 553 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:04:00,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 140 transitions, 991 flow [2024-06-28 02:04:00,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 140 transitions, 955 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:00,208 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 606 flow [2024-06-28 02:04:00,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=606, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2024-06-28 02:04:00,211 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2024-06-28 02:04:00,211 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 606 flow [2024-06-28 02:04:00,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:00,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:00,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:00,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:04:00,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:00,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1724575693, now seen corresponding path program 2 times [2024-06-28 02:04:00,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:00,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542949713] [2024-06-28 02:04:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:00,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:02,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:02,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542949713] [2024-06-28 02:04:02,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542949713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:02,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:02,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:02,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602974934] [2024-06-28 02:04:02,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:02,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:02,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:02,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:02,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 606 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:02,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:02,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:02,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:04,206 INFO L124 PetriNetUnfolderBase]: 2687/4063 cut-off events. [2024-06-28 02:04:04,207 INFO L125 PetriNetUnfolderBase]: For 12338/12338 co-relation queries the response was YES. [2024-06-28 02:04:04,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15013 conditions, 4063 events. 2687/4063 cut-off events. For 12338/12338 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 21921 event pairs, 694 based on Foata normal form. 2/4061 useless extension candidates. Maximal degree in co-relation 14978. Up to 3691 conditions per place. [2024-06-28 02:04:04,229 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 110 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-06-28 02:04:04,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 147 transitions, 1133 flow [2024-06-28 02:04:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 02:04:04,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562111801242236 [2024-06-28 02:04:04,231 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 606 flow. Second operand 7 states and 181 transitions. [2024-06-28 02:04:04,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 147 transitions, 1133 flow [2024-06-28 02:04:04,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 147 transitions, 1071 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:04,241 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 726 flow [2024-06-28 02:04:04,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=726, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2024-06-28 02:04:04,242 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2024-06-28 02:04:04,242 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 726 flow [2024-06-28 02:04:04,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:04,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:04,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:04:04,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:04,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash 90362421, now seen corresponding path program 3 times [2024-06-28 02:04:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:04,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411986399] [2024-06-28 02:04:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411986399] [2024-06-28 02:04:06,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411986399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:06,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:06,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496935457] [2024-06-28 02:04:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:06,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:06,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:06,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:06,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:06,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:06,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:07,928 INFO L124 PetriNetUnfolderBase]: 2682/4057 cut-off events. [2024-06-28 02:04:07,928 INFO L125 PetriNetUnfolderBase]: For 15440/15440 co-relation queries the response was YES. [2024-06-28 02:04:07,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 4057 events. 2682/4057 cut-off events. For 15440/15440 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21877 event pairs, 709 based on Foata normal form. 2/4052 useless extension candidates. Maximal degree in co-relation 15853. Up to 3686 conditions per place. [2024-06-28 02:04:07,951 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 105 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-06-28 02:04:07,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 143 transitions, 1139 flow [2024-06-28 02:04:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:04:07,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 02:04:07,954 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 726 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:04:07,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 143 transitions, 1139 flow [2024-06-28 02:04:07,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 143 transitions, 1106 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:07,966 INFO L231 Difference]: Finished difference. Result has 92 places, 95 transitions, 774 flow [2024-06-28 02:04:07,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=92, PETRI_TRANSITIONS=95} [2024-06-28 02:04:07,968 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-06-28 02:04:07,968 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 95 transitions, 774 flow [2024-06-28 02:04:07,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:07,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:07,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:07,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:04:07,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:07,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1061843375, now seen corresponding path program 1 times [2024-06-28 02:04:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:07,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21332350] [2024-06-28 02:04:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21332350] [2024-06-28 02:04:10,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21332350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:10,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:10,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226059968] [2024-06-28 02:04:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:10,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:10,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:10,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:10,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:10,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:10,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:11,512 INFO L124 PetriNetUnfolderBase]: 2850/4316 cut-off events. [2024-06-28 02:04:11,512 INFO L125 PetriNetUnfolderBase]: For 18170/18170 co-relation queries the response was YES. [2024-06-28 02:04:11,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17541 conditions, 4316 events. 2850/4316 cut-off events. For 18170/18170 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23354 event pairs, 692 based on Foata normal form. 4/4316 useless extension candidates. Maximal degree in co-relation 17501. Up to 3924 conditions per place. [2024-06-28 02:04:11,537 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 130 selfloop transitions, 37 changer transitions 0/174 dead transitions. [2024-06-28 02:04:11,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 1441 flow [2024-06-28 02:04:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:04:11,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-06-28 02:04:11,540 INFO L175 Difference]: Start difference. First operand has 92 places, 95 transitions, 774 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:04:11,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 1441 flow [2024-06-28 02:04:11,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 174 transitions, 1372 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:11,559 INFO L231 Difference]: Finished difference. Result has 98 places, 112 transitions, 994 flow [2024-06-28 02:04:11,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=994, PETRI_PLACES=98, PETRI_TRANSITIONS=112} [2024-06-28 02:04:11,560 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2024-06-28 02:04:11,560 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 112 transitions, 994 flow [2024-06-28 02:04:11,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:11,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:11,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:11,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:04:11,561 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:11,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1922246567, now seen corresponding path program 2 times [2024-06-28 02:04:11,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:11,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787611904] [2024-06-28 02:04:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:11,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787611904] [2024-06-28 02:04:13,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787611904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:13,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:13,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:13,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054847685] [2024-06-28 02:04:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:13,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:13,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:13,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:13,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 112 transitions, 994 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:13,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:13,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:13,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:15,234 INFO L124 PetriNetUnfolderBase]: 2900/4390 cut-off events. [2024-06-28 02:04:15,234 INFO L125 PetriNetUnfolderBase]: For 21372/21372 co-relation queries the response was YES. [2024-06-28 02:04:15,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18636 conditions, 4390 events. 2900/4390 cut-off events. For 21372/21372 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23814 event pairs, 680 based on Foata normal form. 4/4390 useless extension candidates. Maximal degree in co-relation 18592. Up to 3942 conditions per place. [2024-06-28 02:04:15,260 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 123 selfloop transitions, 37 changer transitions 0/167 dead transitions. [2024-06-28 02:04:15,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 167 transitions, 1496 flow [2024-06-28 02:04:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:04:15,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-28 02:04:15,262 INFO L175 Difference]: Start difference. First operand has 98 places, 112 transitions, 994 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:04:15,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 167 transitions, 1496 flow [2024-06-28 02:04:15,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 167 transitions, 1446 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:15,285 INFO L231 Difference]: Finished difference. Result has 102 places, 114 transitions, 1053 flow [2024-06-28 02:04:15,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1053, PETRI_PLACES=102, PETRI_TRANSITIONS=114} [2024-06-28 02:04:15,286 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 52 predicate places. [2024-06-28 02:04:15,286 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 114 transitions, 1053 flow [2024-06-28 02:04:15,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:15,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:15,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:04:15,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:15,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1493724609, now seen corresponding path program 3 times [2024-06-28 02:04:15,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:15,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768370087] [2024-06-28 02:04:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768370087] [2024-06-28 02:04:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768370087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:17,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:17,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754721487] [2024-06-28 02:04:17,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:17,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:17,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:17,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 114 transitions, 1053 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:17,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:17,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:17,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:19,036 INFO L124 PetriNetUnfolderBase]: 2950/4478 cut-off events. [2024-06-28 02:04:19,037 INFO L125 PetriNetUnfolderBase]: For 25427/25436 co-relation queries the response was YES. [2024-06-28 02:04:19,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19517 conditions, 4478 events. 2950/4478 cut-off events. For 25427/25436 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24277 event pairs, 701 based on Foata normal form. 10/4482 useless extension candidates. Maximal degree in co-relation 19472. Up to 4062 conditions per place. [2024-06-28 02:04:19,064 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 126 selfloop transitions, 35 changer transitions 0/168 dead transitions. [2024-06-28 02:04:19,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 168 transitions, 1569 flow [2024-06-28 02:04:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:04:19,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-28 02:04:19,066 INFO L175 Difference]: Start difference. First operand has 102 places, 114 transitions, 1053 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:04:19,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 168 transitions, 1569 flow [2024-06-28 02:04:19,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 168 transitions, 1480 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:19,090 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 1070 flow [2024-06-28 02:04:19,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1070, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2024-06-28 02:04:19,091 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 54 predicate places. [2024-06-28 02:04:19,091 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 1070 flow [2024-06-28 02:04:19,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:19,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:19,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:19,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:04:19,092 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:19,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash -478570019, now seen corresponding path program 4 times [2024-06-28 02:04:19,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:19,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085699117] [2024-06-28 02:04:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:19,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:21,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:21,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085699117] [2024-06-28 02:04:21,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085699117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:21,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:21,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096966656] [2024-06-28 02:04:21,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:21,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:21,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:21,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:21,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 1070 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:21,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:21,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:21,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:22,526 INFO L124 PetriNetUnfolderBase]: 2942/4466 cut-off events. [2024-06-28 02:04:22,526 INFO L125 PetriNetUnfolderBase]: For 24951/24960 co-relation queries the response was YES. [2024-06-28 02:04:22,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19312 conditions, 4466 events. 2942/4466 cut-off events. For 24951/24960 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24210 event pairs, 597 based on Foata normal form. 10/4470 useless extension candidates. Maximal degree in co-relation 19266. Up to 3844 conditions per place. [2024-06-28 02:04:22,553 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 122 selfloop transitions, 43 changer transitions 0/172 dead transitions. [2024-06-28 02:04:22,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 172 transitions, 1614 flow [2024-06-28 02:04:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:04:22,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-28 02:04:22,555 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 1070 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:04:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 172 transitions, 1614 flow [2024-06-28 02:04:22,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 172 transitions, 1534 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:22,581 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 1157 flow [2024-06-28 02:04:22,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1157, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2024-06-28 02:04:22,581 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 57 predicate places. [2024-06-28 02:04:22,582 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 1157 flow [2024-06-28 02:04:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:22,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:22,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:22,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:04:22,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:22,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 517976588, now seen corresponding path program 1 times [2024-06-28 02:04:22,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646821462] [2024-06-28 02:04:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:25,418 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 02:04:25,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:25,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646821462] [2024-06-28 02:04:25,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646821462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:25,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:25,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:25,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341113810] [2024-06-28 02:04:25,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:25,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:25,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:25,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:25,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 1157 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:25,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:25,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:25,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:27,193 INFO L124 PetriNetUnfolderBase]: 3562/5426 cut-off events. [2024-06-28 02:04:27,194 INFO L125 PetriNetUnfolderBase]: For 36342/36342 co-relation queries the response was YES. [2024-06-28 02:04:27,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24329 conditions, 5426 events. 3562/5426 cut-off events. For 36342/36342 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30708 event pairs, 511 based on Foata normal form. 18/5442 useless extension candidates. Maximal degree in co-relation 24281. Up to 4186 conditions per place. [2024-06-28 02:04:27,222 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 170 selfloop transitions, 36 changer transitions 0/213 dead transitions. [2024-06-28 02:04:27,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 213 transitions, 1965 flow [2024-06-28 02:04:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:04:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:04:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 02:04:27,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821256038647343 [2024-06-28 02:04:27,224 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 1157 flow. Second operand 9 states and 241 transitions. [2024-06-28 02:04:27,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 213 transitions, 1965 flow [2024-06-28 02:04:27,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 213 transitions, 1901 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:27,267 INFO L231 Difference]: Finished difference. Result has 114 places, 126 transitions, 1254 flow [2024-06-28 02:04:27,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1254, PETRI_PLACES=114, PETRI_TRANSITIONS=126} [2024-06-28 02:04:27,267 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 64 predicate places. [2024-06-28 02:04:27,268 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 126 transitions, 1254 flow [2024-06-28 02:04:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:27,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:27,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:27,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:04:27,268 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:27,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash -727116908, now seen corresponding path program 2 times [2024-06-28 02:04:27,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:27,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088648220] [2024-06-28 02:04:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:27,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:30,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088648220] [2024-06-28 02:04:30,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088648220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:30,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:30,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:30,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865948629] [2024-06-28 02:04:30,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:30,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:30,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:30,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 126 transitions, 1254 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:30,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:30,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:30,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:31,703 INFO L124 PetriNetUnfolderBase]: 3516/5356 cut-off events. [2024-06-28 02:04:31,703 INFO L125 PetriNetUnfolderBase]: For 37914/37914 co-relation queries the response was YES. [2024-06-28 02:04:31,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24698 conditions, 5356 events. 3516/5356 cut-off events. For 37914/37914 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 30273 event pairs, 758 based on Foata normal form. 24/5378 useless extension candidates. Maximal degree in co-relation 24647. Up to 4550 conditions per place. [2024-06-28 02:04:31,737 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 159 selfloop transitions, 32 changer transitions 0/198 dead transitions. [2024-06-28 02:04:31,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 198 transitions, 1883 flow [2024-06-28 02:04:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 02:04:31,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733695652173914 [2024-06-28 02:04:31,738 INFO L175 Difference]: Start difference. First operand has 114 places, 126 transitions, 1254 flow. Second operand 8 states and 211 transitions. [2024-06-28 02:04:31,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 198 transitions, 1883 flow [2024-06-28 02:04:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 198 transitions, 1819 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:31,788 INFO L231 Difference]: Finished difference. Result has 117 places, 127 transitions, 1285 flow [2024-06-28 02:04:31,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1285, PETRI_PLACES=117, PETRI_TRANSITIONS=127} [2024-06-28 02:04:31,789 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 67 predicate places. [2024-06-28 02:04:31,789 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 127 transitions, 1285 flow [2024-06-28 02:04:31,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:31,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:31,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:31,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:04:31,790 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:31,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -611825738, now seen corresponding path program 3 times [2024-06-28 02:04:31,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:31,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944724194] [2024-06-28 02:04:31,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:31,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:34,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944724194] [2024-06-28 02:04:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944724194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:34,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:34,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654045594] [2024-06-28 02:04:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:34,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:34,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:34,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 127 transitions, 1285 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:34,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:34,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:34,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:36,580 INFO L124 PetriNetUnfolderBase]: 3692/5638 cut-off events. [2024-06-28 02:04:36,580 INFO L125 PetriNetUnfolderBase]: For 38839/38839 co-relation queries the response was YES. [2024-06-28 02:04:36,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25985 conditions, 5638 events. 3692/5638 cut-off events. For 38839/38839 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 32299 event pairs, 802 based on Foata normal form. 16/5650 useless extension candidates. Maximal degree in co-relation 25932. Up to 4870 conditions per place. [2024-06-28 02:04:36,616 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 147 selfloop transitions, 42 changer transitions 0/196 dead transitions. [2024-06-28 02:04:36,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 196 transitions, 1901 flow [2024-06-28 02:04:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 02:04:36,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-28 02:04:36,625 INFO L175 Difference]: Start difference. First operand has 117 places, 127 transitions, 1285 flow. Second operand 8 states and 206 transitions. [2024-06-28 02:04:36,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 196 transitions, 1901 flow [2024-06-28 02:04:36,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 196 transitions, 1841 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:36,674 INFO L231 Difference]: Finished difference. Result has 119 places, 128 transitions, 1336 flow [2024-06-28 02:04:36,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1336, PETRI_PLACES=119, PETRI_TRANSITIONS=128} [2024-06-28 02:04:36,675 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 69 predicate places. [2024-06-28 02:04:36,675 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 128 transitions, 1336 flow [2024-06-28 02:04:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:36,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:36,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:36,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:04:36,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:36,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -796736956, now seen corresponding path program 1 times [2024-06-28 02:04:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:36,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902164213] [2024-06-28 02:04:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:36,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:39,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902164213] [2024-06-28 02:04:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902164213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:39,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:39,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062531764] [2024-06-28 02:04:39,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:39,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:39,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:39,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 128 transitions, 1336 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:39,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:39,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:39,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:41,004 INFO L124 PetriNetUnfolderBase]: 3818/5860 cut-off events. [2024-06-28 02:04:41,004 INFO L125 PetriNetUnfolderBase]: For 43780/43780 co-relation queries the response was YES. [2024-06-28 02:04:41,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27231 conditions, 5860 events. 3818/5860 cut-off events. For 43780/43780 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 33980 event pairs, 786 based on Foata normal form. 12/5868 useless extension candidates. Maximal degree in co-relation 27177. Up to 4536 conditions per place. [2024-06-28 02:04:41,049 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 148 selfloop transitions, 45 changer transitions 0/200 dead transitions. [2024-06-28 02:04:41,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 200 transitions, 1974 flow [2024-06-28 02:04:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:04:41,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-28 02:04:41,053 INFO L175 Difference]: Start difference. First operand has 119 places, 128 transitions, 1336 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:04:41,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 200 transitions, 1974 flow [2024-06-28 02:04:41,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 200 transitions, 1885 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:41,109 INFO L231 Difference]: Finished difference. Result has 121 places, 129 transitions, 1366 flow [2024-06-28 02:04:41,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1366, PETRI_PLACES=121, PETRI_TRANSITIONS=129} [2024-06-28 02:04:41,110 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2024-06-28 02:04:41,110 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 129 transitions, 1366 flow [2024-06-28 02:04:41,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:41,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:41,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:04:41,111 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:41,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash 938994580, now seen corresponding path program 4 times [2024-06-28 02:04:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:41,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328259687] [2024-06-28 02:04:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:43,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328259687] [2024-06-28 02:04:43,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328259687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:43,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:43,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:43,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185828323] [2024-06-28 02:04:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:43,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:43,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:43,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 1366 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:43,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:43,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:43,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:45,446 INFO L124 PetriNetUnfolderBase]: 3936/6058 cut-off events. [2024-06-28 02:04:45,446 INFO L125 PetriNetUnfolderBase]: For 48319/48319 co-relation queries the response was YES. [2024-06-28 02:04:45,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28263 conditions, 6058 events. 3936/6058 cut-off events. For 48319/48319 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 35430 event pairs, 886 based on Foata normal form. 16/6065 useless extension candidates. Maximal degree in co-relation 28208. Up to 5254 conditions per place. [2024-06-28 02:04:45,481 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 148 selfloop transitions, 41 changer transitions 0/196 dead transitions. [2024-06-28 02:04:45,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 196 transitions, 1990 flow [2024-06-28 02:04:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:04:45,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-28 02:04:45,482 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 1366 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:04:45,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 196 transitions, 1990 flow [2024-06-28 02:04:45,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 196 transitions, 1904 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:45,530 INFO L231 Difference]: Finished difference. Result has 124 places, 130 transitions, 1393 flow [2024-06-28 02:04:45,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1393, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2024-06-28 02:04:45,530 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 74 predicate places. [2024-06-28 02:04:45,531 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 1393 flow [2024-06-28 02:04:45,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:45,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:45,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:45,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:04:45,531 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:45,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1959041258, now seen corresponding path program 2 times [2024-06-28 02:04:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:45,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108141334] [2024-06-28 02:04:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:45,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:48,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108141334] [2024-06-28 02:04:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108141334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:48,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:48,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:48,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981113443] [2024-06-28 02:04:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:48,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:48,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:48,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 1393 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:48,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:48,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:48,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:49,943 INFO L124 PetriNetUnfolderBase]: 4062/6276 cut-off events. [2024-06-28 02:04:49,943 INFO L125 PetriNetUnfolderBase]: For 51910/51910 co-relation queries the response was YES. [2024-06-28 02:04:49,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29215 conditions, 6276 events. 4062/6276 cut-off events. For 51910/51910 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37097 event pairs, 886 based on Foata normal form. 12/6279 useless extension candidates. Maximal degree in co-relation 29159. Up to 5222 conditions per place. [2024-06-28 02:04:49,989 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 152 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2024-06-28 02:04:49,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 201 transitions, 2045 flow [2024-06-28 02:04:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:04:49,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-06-28 02:04:49,990 INFO L175 Difference]: Start difference. First operand has 124 places, 130 transitions, 1393 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:04:49,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 201 transitions, 2045 flow [2024-06-28 02:04:50,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 201 transitions, 1954 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:50,065 INFO L231 Difference]: Finished difference. Result has 126 places, 131 transitions, 1418 flow [2024-06-28 02:04:50,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1418, PETRI_PLACES=126, PETRI_TRANSITIONS=131} [2024-06-28 02:04:50,066 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 76 predicate places. [2024-06-28 02:04:50,066 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 131 transitions, 1418 flow [2024-06-28 02:04:50,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:50,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:50,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:50,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:04:50,066 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1322826598, now seen corresponding path program 3 times [2024-06-28 02:04:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:50,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986270175] [2024-06-28 02:04:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:52,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:52,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986270175] [2024-06-28 02:04:52,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986270175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:52,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:52,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454334296] [2024-06-28 02:04:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:52,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:52,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:52,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 131 transitions, 1418 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:52,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:52,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:52,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:53,984 INFO L124 PetriNetUnfolderBase]: 4042/6236 cut-off events. [2024-06-28 02:04:53,984 INFO L125 PetriNetUnfolderBase]: For 50408/50408 co-relation queries the response was YES. [2024-06-28 02:04:54,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28747 conditions, 6236 events. 4042/6236 cut-off events. For 50408/50408 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 36596 event pairs, 713 based on Foata normal form. 12/6239 useless extension candidates. Maximal degree in co-relation 28690. Up to 4148 conditions per place. [2024-06-28 02:04:54,033 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 141 selfloop transitions, 51 changer transitions 0/199 dead transitions. [2024-06-28 02:04:54,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 199 transitions, 1992 flow [2024-06-28 02:04:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 02:04:54,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 02:04:54,035 INFO L175 Difference]: Start difference. First operand has 126 places, 131 transitions, 1418 flow. Second operand 8 states and 204 transitions. [2024-06-28 02:04:54,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 199 transitions, 1992 flow [2024-06-28 02:04:54,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 199 transitions, 1894 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:54,102 INFO L231 Difference]: Finished difference. Result has 127 places, 130 transitions, 1386 flow [2024-06-28 02:04:54,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1386, PETRI_PLACES=127, PETRI_TRANSITIONS=130} [2024-06-28 02:04:54,103 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2024-06-28 02:04:54,103 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 130 transitions, 1386 flow [2024-06-28 02:04:54,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:54,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:54,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:54,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:04:54,103 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:54,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash 932003763, now seen corresponding path program 1 times [2024-06-28 02:04:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:54,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028988737] [2024-06-28 02:04:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:54,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028988737] [2024-06-28 02:04:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028988737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:55,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:55,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:04:55,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475492321] [2024-06-28 02:04:55,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:55,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:04:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:04:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:04:55,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:04:55,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 130 transitions, 1386 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:04:55,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:55,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:04:55,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:56,972 INFO L124 PetriNetUnfolderBase]: 3709/6113 cut-off events. [2024-06-28 02:04:56,973 INFO L125 PetriNetUnfolderBase]: For 47510/47524 co-relation queries the response was YES. [2024-06-28 02:04:56,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26905 conditions, 6113 events. 3709/6113 cut-off events. For 47510/47524 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38915 event pairs, 1153 based on Foata normal form. 12/6083 useless extension candidates. Maximal degree in co-relation 26847. Up to 5420 conditions per place. [2024-06-28 02:04:57,020 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 120 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-06-28 02:04:57,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 153 transitions, 1734 flow [2024-06-28 02:04:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:04:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:04:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 02:04:57,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-06-28 02:04:57,022 INFO L175 Difference]: Start difference. First operand has 127 places, 130 transitions, 1386 flow. Second operand 5 states and 119 transitions. [2024-06-28 02:04:57,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 153 transitions, 1734 flow [2024-06-28 02:04:57,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 153 transitions, 1587 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:04:57,074 INFO L231 Difference]: Finished difference. Result has 125 places, 134 transitions, 1312 flow [2024-06-28 02:04:57,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1312, PETRI_PLACES=125, PETRI_TRANSITIONS=134} [2024-06-28 02:04:57,074 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2024-06-28 02:04:57,074 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 134 transitions, 1312 flow [2024-06-28 02:04:57,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:04:57,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:57,075 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 02:04:57,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:04:57,075 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:57,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1621441618, now seen corresponding path program 1 times [2024-06-28 02:04:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:57,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101929185] [2024-06-28 02:04:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:58,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:58,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101929185] [2024-06-28 02:04:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101929185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:58,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:58,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:04:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971227669] [2024-06-28 02:04:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:04:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:04:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:04:58,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:58,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 134 transitions, 1312 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:58,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:58,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:58,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:00,133 INFO L124 PetriNetUnfolderBase]: 4054/6546 cut-off events. [2024-06-28 02:05:00,134 INFO L125 PetriNetUnfolderBase]: For 46928/46928 co-relation queries the response was YES. [2024-06-28 02:05:00,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28566 conditions, 6546 events. 4054/6546 cut-off events. For 46928/46928 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 40789 event pairs, 1206 based on Foata normal form. 1/6544 useless extension candidates. Maximal degree in co-relation 28508. Up to 5917 conditions per place. [2024-06-28 02:05:00,177 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 142 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2024-06-28 02:05:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1850 flow [2024-06-28 02:05:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:05:00,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 02:05:00,179 INFO L175 Difference]: Start difference. First operand has 125 places, 134 transitions, 1312 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:05:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1850 flow [2024-06-28 02:05:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 170 transitions, 1805 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:00,227 INFO L231 Difference]: Finished difference. Result has 128 places, 142 transitions, 1420 flow [2024-06-28 02:05:00,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1420, PETRI_PLACES=128, PETRI_TRANSITIONS=142} [2024-06-28 02:05:00,227 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2024-06-28 02:05:00,227 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 142 transitions, 1420 flow [2024-06-28 02:05:00,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:00,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:00,227 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 02:05:00,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:05:00,228 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:00,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1123504908, now seen corresponding path program 2 times [2024-06-28 02:05:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:00,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172003783] [2024-06-28 02:05:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:01,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172003783] [2024-06-28 02:05:01,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172003783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:01,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:01,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:05:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647429513] [2024-06-28 02:05:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:01,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:05:01,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:01,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:05:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:05:01,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:01,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 142 transitions, 1420 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:01,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:01,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:01,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:03,143 INFO L124 PetriNetUnfolderBase]: 4051/6542 cut-off events. [2024-06-28 02:05:03,143 INFO L125 PetriNetUnfolderBase]: For 51726/51726 co-relation queries the response was YES. [2024-06-28 02:05:03,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29364 conditions, 6542 events. 4051/6542 cut-off events. For 51726/51726 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 40784 event pairs, 1206 based on Foata normal form. 1/6540 useless extension candidates. Maximal degree in co-relation 29305. Up to 5925 conditions per place. [2024-06-28 02:05:03,189 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 140 selfloop transitions, 17 changer transitions 0/164 dead transitions. [2024-06-28 02:05:03,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 164 transitions, 1794 flow [2024-06-28 02:05:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:05:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:05:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 02:05:03,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-06-28 02:05:03,191 INFO L175 Difference]: Start difference. First operand has 128 places, 142 transitions, 1420 flow. Second operand 5 states and 119 transitions. [2024-06-28 02:05:03,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 164 transitions, 1794 flow [2024-06-28 02:05:03,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 164 transitions, 1716 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 02:05:03,253 INFO L231 Difference]: Finished difference. Result has 131 places, 142 transitions, 1388 flow [2024-06-28 02:05:03,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1388, PETRI_PLACES=131, PETRI_TRANSITIONS=142} [2024-06-28 02:05:03,253 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 81 predicate places. [2024-06-28 02:05:03,253 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 142 transitions, 1388 flow [2024-06-28 02:05:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:03,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:03,253 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 02:05:03,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:05:03,254 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:03,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1138532922, now seen corresponding path program 1 times [2024-06-28 02:05:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790887254] [2024-06-28 02:05:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:05,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:05,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790887254] [2024-06-28 02:05:05,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790887254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:05,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:05,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:05,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837001165] [2024-06-28 02:05:05,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:05,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:05,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:05,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:05,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:05:05,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 142 transitions, 1388 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:05,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:05,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:05:05,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:07,273 INFO L124 PetriNetUnfolderBase]: 3939/6225 cut-off events. [2024-06-28 02:05:07,273 INFO L125 PetriNetUnfolderBase]: For 53129/53137 co-relation queries the response was YES. [2024-06-28 02:05:07,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28614 conditions, 6225 events. 3939/6225 cut-off events. For 53129/53137 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 38162 event pairs, 881 based on Foata normal form. 10/6184 useless extension candidates. Maximal degree in co-relation 28553. Up to 5477 conditions per place. [2024-06-28 02:05:07,320 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 151 selfloop transitions, 37 changer transitions 0/208 dead transitions. [2024-06-28 02:05:07,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 208 transitions, 2088 flow [2024-06-28 02:05:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:05:07,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-28 02:05:07,321 INFO L175 Difference]: Start difference. First operand has 131 places, 142 transitions, 1388 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:05:07,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 208 transitions, 2088 flow [2024-06-28 02:05:07,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 208 transitions, 2054 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:07,385 INFO L231 Difference]: Finished difference. Result has 136 places, 155 transitions, 1570 flow [2024-06-28 02:05:07,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1570, PETRI_PLACES=136, PETRI_TRANSITIONS=155} [2024-06-28 02:05:07,386 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 86 predicate places. [2024-06-28 02:05:07,386 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 155 transitions, 1570 flow [2024-06-28 02:05:07,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:07,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:07,386 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 02:05:07,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:05:07,386 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:07,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash -469097018, now seen corresponding path program 2 times [2024-06-28 02:05:07,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:07,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537065888] [2024-06-28 02:05:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:07,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:09,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537065888] [2024-06-28 02:05:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537065888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:09,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:09,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:09,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119179170] [2024-06-28 02:05:09,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:09,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:05:09,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 155 transitions, 1570 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:09,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:09,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:05:09,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:11,086 INFO L124 PetriNetUnfolderBase]: 3925/6211 cut-off events. [2024-06-28 02:05:11,086 INFO L125 PetriNetUnfolderBase]: For 58843/58851 co-relation queries the response was YES. [2024-06-28 02:05:11,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29932 conditions, 6211 events. 3925/6211 cut-off events. For 58843/58851 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 38152 event pairs, 883 based on Foata normal form. 10/6170 useless extension candidates. Maximal degree in co-relation 29869. Up to 5469 conditions per place. [2024-06-28 02:05:11,133 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 139 selfloop transitions, 34 changer transitions 0/193 dead transitions. [2024-06-28 02:05:11,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 193 transitions, 2036 flow [2024-06-28 02:05:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:05:11,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-28 02:05:11,135 INFO L175 Difference]: Start difference. First operand has 136 places, 155 transitions, 1570 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:05:11,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 193 transitions, 2036 flow [2024-06-28 02:05:11,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 193 transitions, 1967 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 02:05:11,210 INFO L231 Difference]: Finished difference. Result has 140 places, 155 transitions, 1583 flow [2024-06-28 02:05:11,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1583, PETRI_PLACES=140, PETRI_TRANSITIONS=155} [2024-06-28 02:05:11,211 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 90 predicate places. [2024-06-28 02:05:11,211 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 155 transitions, 1583 flow [2024-06-28 02:05:11,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:11,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:11,211 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 02:05:11,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:05:11,212 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:11,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash -468711068, now seen corresponding path program 3 times [2024-06-28 02:05:11,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:11,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542897954] [2024-06-28 02:05:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:13,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542897954] [2024-06-28 02:05:13,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542897954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:13,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119978293] [2024-06-28 02:05:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:13,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:13,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:05:13,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 155 transitions, 1583 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:13,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:13,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:05:13,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:15,008 INFO L124 PetriNetUnfolderBase]: 3920/6203 cut-off events. [2024-06-28 02:05:15,008 INFO L125 PetriNetUnfolderBase]: For 60841/60849 co-relation queries the response was YES. [2024-06-28 02:05:15,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29912 conditions, 6203 events. 3920/6203 cut-off events. For 60841/60849 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 38156 event pairs, 899 based on Foata normal form. 8/6157 useless extension candidates. Maximal degree in co-relation 29847. Up to 5387 conditions per place. [2024-06-28 02:05:15,056 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 136 selfloop transitions, 38 changer transitions 0/194 dead transitions. [2024-06-28 02:05:15,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 194 transitions, 2119 flow [2024-06-28 02:05:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 02:05:15,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-28 02:05:15,057 INFO L175 Difference]: Start difference. First operand has 140 places, 155 transitions, 1583 flow. Second operand 6 states and 146 transitions. [2024-06-28 02:05:15,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 194 transitions, 2119 flow [2024-06-28 02:05:15,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 194 transitions, 2051 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:15,143 INFO L231 Difference]: Finished difference. Result has 142 places, 162 transitions, 1699 flow [2024-06-28 02:05:15,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1699, PETRI_PLACES=142, PETRI_TRANSITIONS=162} [2024-06-28 02:05:15,143 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 92 predicate places. [2024-06-28 02:05:15,143 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 162 transitions, 1699 flow [2024-06-28 02:05:15,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:15,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:15,143 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 02:05:15,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:05:15,144 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:15,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:15,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1274916120, now seen corresponding path program 1 times [2024-06-28 02:05:15,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:15,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596966323] [2024-06-28 02:05:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:15,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:17,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596966323] [2024-06-28 02:05:17,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596966323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:17,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:17,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978603223] [2024-06-28 02:05:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:17,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:17,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:17,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 162 transitions, 1699 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:17,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:17,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:17,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:18,856 INFO L124 PetriNetUnfolderBase]: 4325/6902 cut-off events. [2024-06-28 02:05:18,857 INFO L125 PetriNetUnfolderBase]: For 70251/70251 co-relation queries the response was YES. [2024-06-28 02:05:18,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33923 conditions, 6902 events. 4325/6902 cut-off events. For 70251/70251 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 42872 event pairs, 1215 based on Foata normal form. 2/6901 useless extension candidates. Maximal degree in co-relation 33856. Up to 6203 conditions per place. [2024-06-28 02:05:18,909 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 168 selfloop transitions, 31 changer transitions 0/206 dead transitions. [2024-06-28 02:05:18,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 206 transitions, 2353 flow [2024-06-28 02:05:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:05:18,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-28 02:05:18,911 INFO L175 Difference]: Start difference. First operand has 142 places, 162 transitions, 1699 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:05:18,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 206 transitions, 2353 flow [2024-06-28 02:05:19,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 206 transitions, 2278 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 02:05:19,016 INFO L231 Difference]: Finished difference. Result has 147 places, 170 transitions, 1813 flow [2024-06-28 02:05:19,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1813, PETRI_PLACES=147, PETRI_TRANSITIONS=170} [2024-06-28 02:05:19,016 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-06-28 02:05:19,016 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 170 transitions, 1813 flow [2024-06-28 02:05:19,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:19,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:19,017 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 02:05:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:05:19,017 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:19,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash -468705116, now seen corresponding path program 2 times [2024-06-28 02:05:19,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:19,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024658455] [2024-06-28 02:05:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:19,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:21,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024658455] [2024-06-28 02:05:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024658455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:21,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032075057] [2024-06-28 02:05:21,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:21,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:21,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:21,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:21,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:21,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 170 transitions, 1813 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:21,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:21,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:21,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:22,744 INFO L124 PetriNetUnfolderBase]: 4361/6954 cut-off events. [2024-06-28 02:05:22,744 INFO L125 PetriNetUnfolderBase]: For 73525/73525 co-relation queries the response was YES. [2024-06-28 02:05:22,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34513 conditions, 6954 events. 4361/6954 cut-off events. For 73525/73525 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 43135 event pairs, 1207 based on Foata normal form. 2/6953 useless extension candidates. Maximal degree in co-relation 34444. Up to 6268 conditions per place. [2024-06-28 02:05:22,793 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 179 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2024-06-28 02:05:22,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 215 transitions, 2449 flow [2024-06-28 02:05:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 02:05:22,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-28 02:05:22,795 INFO L175 Difference]: Start difference. First operand has 147 places, 170 transitions, 1813 flow. Second operand 8 states and 183 transitions. [2024-06-28 02:05:22,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 215 transitions, 2449 flow [2024-06-28 02:05:22,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 215 transitions, 2365 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:22,908 INFO L231 Difference]: Finished difference. Result has 152 places, 174 transitions, 1856 flow [2024-06-28 02:05:22,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1856, PETRI_PLACES=152, PETRI_TRANSITIONS=174} [2024-06-28 02:05:22,909 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 102 predicate places. [2024-06-28 02:05:22,909 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 174 transitions, 1856 flow [2024-06-28 02:05:22,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:22,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:22,909 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 02:05:22,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:05:22,910 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:22,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1419325618, now seen corresponding path program 3 times [2024-06-28 02:05:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:22,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623873078] [2024-06-28 02:05:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:22,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623873078] [2024-06-28 02:05:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623873078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339877562] [2024-06-28 02:05:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:24,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:24,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 174 transitions, 1856 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:24,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:24,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:24,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:26,412 INFO L124 PetriNetUnfolderBase]: 4355/6946 cut-off events. [2024-06-28 02:05:26,412 INFO L125 PetriNetUnfolderBase]: For 74390/74390 co-relation queries the response was YES. [2024-06-28 02:05:26,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34426 conditions, 6946 events. 4355/6946 cut-off events. For 74390/74390 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 43092 event pairs, 1216 based on Foata normal form. 2/6945 useless extension candidates. Maximal degree in co-relation 34355. Up to 6263 conditions per place. [2024-06-28 02:05:26,481 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 169 selfloop transitions, 28 changer transitions 0/204 dead transitions. [2024-06-28 02:05:26,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 204 transitions, 2328 flow [2024-06-28 02:05:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 02:05:26,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:05:26,483 INFO L175 Difference]: Start difference. First operand has 152 places, 174 transitions, 1856 flow. Second operand 6 states and 144 transitions. [2024-06-28 02:05:26,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 204 transitions, 2328 flow [2024-06-28 02:05:26,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 204 transitions, 2190 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:26,595 INFO L231 Difference]: Finished difference. Result has 152 places, 174 transitions, 1781 flow [2024-06-28 02:05:26,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1781, PETRI_PLACES=152, PETRI_TRANSITIONS=174} [2024-06-28 02:05:26,596 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 102 predicate places. [2024-06-28 02:05:26,596 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 174 transitions, 1781 flow [2024-06-28 02:05:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:26,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:26,596 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 02:05:26,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:05:26,596 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:26,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -468697180, now seen corresponding path program 1 times [2024-06-28 02:05:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165070554] [2024-06-28 02:05:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:29,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165070554] [2024-06-28 02:05:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165070554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:29,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:29,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791586675] [2024-06-28 02:05:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:29,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:29,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:05:29,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 174 transitions, 1781 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:29,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:29,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:05:29,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:30,730 INFO L124 PetriNetUnfolderBase]: 3959/6454 cut-off events. [2024-06-28 02:05:30,731 INFO L125 PetriNetUnfolderBase]: For 71399/71415 co-relation queries the response was YES. [2024-06-28 02:05:30,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31664 conditions, 6454 events. 3959/6454 cut-off events. For 71399/71415 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 41029 event pairs, 1143 based on Foata normal form. 12/6421 useless extension candidates. Maximal degree in co-relation 31592. Up to 5726 conditions per place. [2024-06-28 02:05:30,781 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 166 selfloop transitions, 16 changer transitions 0/202 dead transitions. [2024-06-28 02:05:30,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 202 transitions, 2261 flow [2024-06-28 02:05:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:05:30,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 02:05:30,784 INFO L175 Difference]: Start difference. First operand has 152 places, 174 transitions, 1781 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:05:30,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 202 transitions, 2261 flow [2024-06-28 02:05:30,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 202 transitions, 2205 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:30,887 INFO L231 Difference]: Finished difference. Result has 153 places, 177 transitions, 1821 flow [2024-06-28 02:05:30,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1821, PETRI_PLACES=153, PETRI_TRANSITIONS=177} [2024-06-28 02:05:30,887 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 103 predicate places. [2024-06-28 02:05:30,888 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 177 transitions, 1821 flow [2024-06-28 02:05:30,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:30,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:30,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:05:30,888 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:30,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash -46173023, now seen corresponding path program 1 times [2024-06-28 02:05:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:30,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140927844] [2024-06-28 02:05:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:33,420 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 02:05:33,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:33,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140927844] [2024-06-28 02:05:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140927844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:33,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:33,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:33,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132610219] [2024-06-28 02:05:33,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:33,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:33,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:33,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 177 transitions, 1821 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:33,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:33,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:33,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:35,221 INFO L124 PetriNetUnfolderBase]: 4399/6791 cut-off events. [2024-06-28 02:05:35,221 INFO L125 PetriNetUnfolderBase]: For 79933/79933 co-relation queries the response was YES. [2024-06-28 02:05:35,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34827 conditions, 6791 events. 4399/6791 cut-off events. For 79933/79933 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 40535 event pairs, 922 based on Foata normal form. 1/6788 useless extension candidates. Maximal degree in co-relation 34754. Up to 6104 conditions per place. [2024-06-28 02:05:35,277 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 180 selfloop transitions, 52 changer transitions 0/239 dead transitions. [2024-06-28 02:05:35,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 239 transitions, 2765 flow [2024-06-28 02:05:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:35,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:05:35,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-28 02:05:35,279 INFO L175 Difference]: Start difference. First operand has 153 places, 177 transitions, 1821 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:05:35,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 239 transitions, 2765 flow [2024-06-28 02:05:35,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 239 transitions, 2691 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:35,433 INFO L231 Difference]: Finished difference. Result has 157 places, 189 transitions, 2059 flow [2024-06-28 02:05:35,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2059, PETRI_PLACES=157, PETRI_TRANSITIONS=189} [2024-06-28 02:05:35,434 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 107 predicate places. [2024-06-28 02:05:35,434 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 189 transitions, 2059 flow [2024-06-28 02:05:35,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:35,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:35,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:35,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:05:35,435 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:35,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1992868793, now seen corresponding path program 2 times [2024-06-28 02:05:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:35,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327160568] [2024-06-28 02:05:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:37,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327160568] [2024-06-28 02:05:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327160568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:37,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:37,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:37,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717702543] [2024-06-28 02:05:37,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:37,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:37,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:37,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 189 transitions, 2059 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:37,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:37,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:37,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:39,539 INFO L124 PetriNetUnfolderBase]: 4445/6899 cut-off events. [2024-06-28 02:05:39,539 INFO L125 PetriNetUnfolderBase]: For 87750/87750 co-relation queries the response was YES. [2024-06-28 02:05:39,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36354 conditions, 6899 events. 4445/6899 cut-off events. For 87750/87750 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41476 event pairs, 939 based on Foata normal form. 1/6898 useless extension candidates. Maximal degree in co-relation 36279. Up to 6285 conditions per place. [2024-06-28 02:05:39,599 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 199 selfloop transitions, 35 changer transitions 0/241 dead transitions. [2024-06-28 02:05:39,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 241 transitions, 2787 flow [2024-06-28 02:05:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:05:39,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 02:05:39,601 INFO L175 Difference]: Start difference. First operand has 157 places, 189 transitions, 2059 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:05:39,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 241 transitions, 2787 flow [2024-06-28 02:05:39,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 241 transitions, 2729 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-28 02:05:39,817 INFO L231 Difference]: Finished difference. Result has 163 places, 195 transitions, 2168 flow [2024-06-28 02:05:39,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2168, PETRI_PLACES=163, PETRI_TRANSITIONS=195} [2024-06-28 02:05:39,817 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 113 predicate places. [2024-06-28 02:05:39,817 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 195 transitions, 2168 flow [2024-06-28 02:05:39,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:39,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:39,818 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 02:05:39,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:05:39,818 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:39,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash -878181167, now seen corresponding path program 3 times [2024-06-28 02:05:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:39,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968523640] [2024-06-28 02:05:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:39,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:42,420 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 02:05:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:42,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968523640] [2024-06-28 02:05:42,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968523640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:42,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:42,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72813308] [2024-06-28 02:05:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:42,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:42,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:42,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:42,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 195 transitions, 2168 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:42,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:42,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:42,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:44,323 INFO L124 PetriNetUnfolderBase]: 4468/6934 cut-off events. [2024-06-28 02:05:44,323 INFO L125 PetriNetUnfolderBase]: For 91120/91129 co-relation queries the response was YES. [2024-06-28 02:05:44,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36558 conditions, 6934 events. 4468/6934 cut-off events. For 91120/91129 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 41707 event pairs, 951 based on Foata normal form. 7/6935 useless extension candidates. Maximal degree in co-relation 36480. Up to 6183 conditions per place. [2024-06-28 02:05:44,379 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 183 selfloop transitions, 57 changer transitions 0/247 dead transitions. [2024-06-28 02:05:44,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 247 transitions, 3030 flow [2024-06-28 02:05:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:05:44,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-28 02:05:44,380 INFO L175 Difference]: Start difference. First operand has 163 places, 195 transitions, 2168 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:05:44,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 247 transitions, 3030 flow [2024-06-28 02:05:44,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 247 transitions, 2950 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:44,494 INFO L231 Difference]: Finished difference. Result has 165 places, 198 transitions, 2255 flow [2024-06-28 02:05:44,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2255, PETRI_PLACES=165, PETRI_TRANSITIONS=198} [2024-06-28 02:05:44,494 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 115 predicate places. [2024-06-28 02:05:44,494 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 198 transitions, 2255 flow [2024-06-28 02:05:44,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:44,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:44,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:44,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:05:44,495 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:44,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1823117973, now seen corresponding path program 4 times [2024-06-28 02:05:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:44,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272966202] [2024-06-28 02:05:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:44,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:46,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:46,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272966202] [2024-06-28 02:05:46,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272966202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:46,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:46,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:46,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176860077] [2024-06-28 02:05:46,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:46,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:46,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 198 transitions, 2255 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:46,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:46,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:46,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:48,567 INFO L124 PetriNetUnfolderBase]: 4496/6976 cut-off events. [2024-06-28 02:05:48,568 INFO L125 PetriNetUnfolderBase]: For 94728/94737 co-relation queries the response was YES. [2024-06-28 02:05:48,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37128 conditions, 6976 events. 4496/6976 cut-off events. For 94728/94737 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 42051 event pairs, 951 based on Foata normal form. 7/6977 useless extension candidates. Maximal degree in co-relation 37049. Up to 6211 conditions per place. [2024-06-28 02:05:48,623 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 176 selfloop transitions, 64 changer transitions 0/247 dead transitions. [2024-06-28 02:05:48,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 247 transitions, 3090 flow [2024-06-28 02:05:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:05:48,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 02:05:48,625 INFO L175 Difference]: Start difference. First operand has 165 places, 198 transitions, 2255 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:05:48,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 247 transitions, 3090 flow [2024-06-28 02:05:48,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 247 transitions, 2933 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:48,760 INFO L231 Difference]: Finished difference. Result has 168 places, 204 transitions, 2357 flow [2024-06-28 02:05:48,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2357, PETRI_PLACES=168, PETRI_TRANSITIONS=204} [2024-06-28 02:05:48,761 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 118 predicate places. [2024-06-28 02:05:48,761 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 204 transitions, 2357 flow [2024-06-28 02:05:48,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:48,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:48,761 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 02:05:48,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:05:48,761 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:48,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1657111309, now seen corresponding path program 5 times [2024-06-28 02:05:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:48,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748139772] [2024-06-28 02:05:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:48,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:51,183 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 02:05:51,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:51,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748139772] [2024-06-28 02:05:51,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748139772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:51,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:51,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:51,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928432129] [2024-06-28 02:05:51,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:51,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:51,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:51,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 204 transitions, 2357 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:51,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:51,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:51,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:53,227 INFO L124 PetriNetUnfolderBase]: 4493/6977 cut-off events. [2024-06-28 02:05:53,227 INFO L125 PetriNetUnfolderBase]: For 95824/95824 co-relation queries the response was YES. [2024-06-28 02:05:53,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37055 conditions, 6977 events. 4493/6977 cut-off events. For 95824/95824 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 42155 event pairs, 922 based on Foata normal form. 1/6976 useless extension candidates. Maximal degree in co-relation 36975. Up to 6156 conditions per place. [2024-06-28 02:05:53,291 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 191 selfloop transitions, 71 changer transitions 0/269 dead transitions. [2024-06-28 02:05:53,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 269 transitions, 3185 flow [2024-06-28 02:05:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 02:05:53,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-28 02:05:53,293 INFO L175 Difference]: Start difference. First operand has 168 places, 204 transitions, 2357 flow. Second operand 8 states and 206 transitions. [2024-06-28 02:05:53,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 269 transitions, 3185 flow [2024-06-28 02:05:53,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 269 transitions, 3081 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:53,465 INFO L231 Difference]: Finished difference. Result has 173 places, 204 transitions, 2428 flow [2024-06-28 02:05:53,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2428, PETRI_PLACES=173, PETRI_TRANSITIONS=204} [2024-06-28 02:05:53,465 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 123 predicate places. [2024-06-28 02:05:53,465 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 204 transitions, 2428 flow [2024-06-28 02:05:53,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:53,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:53,466 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 02:05:53,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:05:53,466 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:53,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1823125191, now seen corresponding path program 6 times [2024-06-28 02:05:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:53,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832732062] [2024-06-28 02:05:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:55,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:55,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832732062] [2024-06-28 02:05:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832732062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:55,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405563674] [2024-06-28 02:05:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:55,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:55,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:55,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 204 transitions, 2428 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:55,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:55,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:55,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:57,207 INFO L124 PetriNetUnfolderBase]: 4490/6964 cut-off events. [2024-06-28 02:05:57,207 INFO L125 PetriNetUnfolderBase]: For 100987/100987 co-relation queries the response was YES. [2024-06-28 02:05:57,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37320 conditions, 6964 events. 4490/6964 cut-off events. For 100987/100987 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 41961 event pairs, 965 based on Foata normal form. 1/6956 useless extension candidates. Maximal degree in co-relation 37239. Up to 6153 conditions per place. [2024-06-28 02:05:57,268 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 170 selfloop transitions, 67 changer transitions 0/244 dead transitions. [2024-06-28 02:05:57,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 244 transitions, 3072 flow [2024-06-28 02:05:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:05:57,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471014492753623 [2024-06-28 02:05:57,269 INFO L175 Difference]: Start difference. First operand has 173 places, 204 transitions, 2428 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:05:57,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 244 transitions, 3072 flow [2024-06-28 02:05:57,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 244 transitions, 2847 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:05:57,424 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 2352 flow [2024-06-28 02:05:57,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2352, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-06-28 02:05:57,425 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 120 predicate places. [2024-06-28 02:05:57,425 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 2352 flow [2024-06-28 02:05:57,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:57,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:57,425 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 02:05:57,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:05:57,425 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:57,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:57,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1825966997, now seen corresponding path program 1 times [2024-06-28 02:05:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:57,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536900994] [2024-06-28 02:05:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:57,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536900994] [2024-06-28 02:05:59,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536900994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:59,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:59,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:59,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623670539] [2024-06-28 02:05:59,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:59,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:59,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:59,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:59,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:59,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:59,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:59,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:59,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:59,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:01,057 INFO L124 PetriNetUnfolderBase]: 4520/7195 cut-off events. [2024-06-28 02:06:01,057 INFO L125 PetriNetUnfolderBase]: For 98563/98563 co-relation queries the response was YES. [2024-06-28 02:06:01,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37537 conditions, 7195 events. 4520/7195 cut-off events. For 98563/98563 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 44816 event pairs, 1136 based on Foata normal form. 2/7194 useless extension candidates. Maximal degree in co-relation 37457. Up to 6451 conditions per place. [2024-06-28 02:06:01,132 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 213 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-28 02:06:01,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 249 transitions, 3126 flow [2024-06-28 02:06:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:06:01,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-28 02:06:01,133 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 2352 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:06:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 249 transitions, 3126 flow [2024-06-28 02:06:01,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 249 transitions, 2980 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:06:01,379 INFO L231 Difference]: Finished difference. Result has 171 places, 210 transitions, 2398 flow [2024-06-28 02:06:01,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2398, PETRI_PLACES=171, PETRI_TRANSITIONS=210} [2024-06-28 02:06:01,379 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 121 predicate places. [2024-06-28 02:06:01,379 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 210 transitions, 2398 flow [2024-06-28 02:06:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:01,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:01,380 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 02:06:01,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:06:01,380 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:01,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash -867697711, now seen corresponding path program 2 times [2024-06-28 02:06:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223904710] [2024-06-28 02:06:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:03,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223904710] [2024-06-28 02:06:03,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223904710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:03,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:03,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:06:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414054569] [2024-06-28 02:06:03,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:06:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:06:03,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:06:03,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:03,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 210 transitions, 2398 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:03,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:03,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:03,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:05,207 INFO L124 PetriNetUnfolderBase]: 4550/7238 cut-off events. [2024-06-28 02:06:05,208 INFO L125 PetriNetUnfolderBase]: For 100638/100638 co-relation queries the response was YES. [2024-06-28 02:06:05,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37912 conditions, 7238 events. 4550/7238 cut-off events. For 100638/100638 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 45190 event pairs, 1230 based on Foata normal form. 2/7237 useless extension candidates. Maximal degree in co-relation 37832. Up to 6568 conditions per place. [2024-06-28 02:06:05,285 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 215 selfloop transitions, 24 changer transitions 0/246 dead transitions. [2024-06-28 02:06:05,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 246 transitions, 3028 flow [2024-06-28 02:06:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:06:05,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 02:06:05,287 INFO L175 Difference]: Start difference. First operand has 171 places, 210 transitions, 2398 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:06:05,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 246 transitions, 3028 flow [2024-06-28 02:06:05,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 246 transitions, 2903 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 02:06:05,442 INFO L231 Difference]: Finished difference. Result has 175 places, 213 transitions, 2399 flow [2024-06-28 02:06:05,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2399, PETRI_PLACES=175, PETRI_TRANSITIONS=213} [2024-06-28 02:06:05,442 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 125 predicate places. [2024-06-28 02:06:05,443 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 213 transitions, 2399 flow [2024-06-28 02:06:05,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:05,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:05,443 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 02:06:05,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:06:05,443 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:05,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1651389453, now seen corresponding path program 3 times [2024-06-28 02:06:05,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:05,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305101336] [2024-06-28 02:06:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:07,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305101336] [2024-06-28 02:06:07,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305101336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:07,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:07,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:06:07,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758812263] [2024-06-28 02:06:07,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:07,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:06:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:06:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:06:07,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:07,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 213 transitions, 2399 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:07,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:07,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:07,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:09,161 INFO L124 PetriNetUnfolderBase]: 4545/7230 cut-off events. [2024-06-28 02:06:09,161 INFO L125 PetriNetUnfolderBase]: For 100899/100899 co-relation queries the response was YES. [2024-06-28 02:06:09,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37581 conditions, 7230 events. 4545/7230 cut-off events. For 100899/100899 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 45070 event pairs, 1135 based on Foata normal form. 2/7229 useless extension candidates. Maximal degree in co-relation 37499. Up to 6534 conditions per place. [2024-06-28 02:06:09,227 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 215 selfloop transitions, 23 changer transitions 0/245 dead transitions. [2024-06-28 02:06:09,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 245 transitions, 2961 flow [2024-06-28 02:06:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:06:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:06:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 02:06:09,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:06:09,228 INFO L175 Difference]: Start difference. First operand has 175 places, 213 transitions, 2399 flow. Second operand 6 states and 144 transitions. [2024-06-28 02:06:09,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 245 transitions, 2961 flow [2024-06-28 02:06:09,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 2863 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:09,387 INFO L231 Difference]: Finished difference. Result has 176 places, 213 transitions, 2357 flow [2024-06-28 02:06:09,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2357, PETRI_PLACES=176, PETRI_TRANSITIONS=213} [2024-06-28 02:06:09,388 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 126 predicate places. [2024-06-28 02:06:09,388 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 213 transitions, 2357 flow [2024-06-28 02:06:09,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:09,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:09,388 INFO 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 02:06:09,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:06:09,388 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:09,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1400019180, now seen corresponding path program 1 times [2024-06-28 02:06:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:09,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513542312] [2024-06-28 02:06:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:09,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:12,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513542312] [2024-06-28 02:06:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513542312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:12,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:12,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:12,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368252605] [2024-06-28 02:06:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:12,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:12,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:12,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:12,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 213 transitions, 2357 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:12,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:12,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:12,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:14,257 INFO L124 PetriNetUnfolderBase]: 4568/7076 cut-off events. [2024-06-28 02:06:14,257 INFO L125 PetriNetUnfolderBase]: For 101504/101504 co-relation queries the response was YES. [2024-06-28 02:06:14,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37570 conditions, 7076 events. 4568/7076 cut-off events. For 101504/101504 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 42634 event pairs, 929 based on Foata normal form. 1/7075 useless extension candidates. Maximal degree in co-relation 37487. Up to 6416 conditions per place. [2024-06-28 02:06:14,319 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 231 selfloop transitions, 41 changer transitions 0/279 dead transitions. [2024-06-28 02:06:14,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 279 transitions, 3195 flow [2024-06-28 02:06:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:06:14,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:06:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:06:14,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-28 02:06:14,320 INFO L175 Difference]: Start difference. First operand has 176 places, 213 transitions, 2357 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:06:14,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 279 transitions, 3195 flow [2024-06-28 02:06:14,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 279 transitions, 3139 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:14,479 INFO L231 Difference]: Finished difference. Result has 179 places, 216 transitions, 2439 flow [2024-06-28 02:06:14,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2439, PETRI_PLACES=179, PETRI_TRANSITIONS=216} [2024-06-28 02:06:14,480 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 129 predicate places. [2024-06-28 02:06:14,480 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 216 transitions, 2439 flow [2024-06-28 02:06:14,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:14,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:14,480 INFO 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 02:06:14,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:06:14,480 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:14,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1431631550, now seen corresponding path program 2 times [2024-06-28 02:06:14,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:14,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488851095] [2024-06-28 02:06:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:14,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:17,207 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 02:06:17,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:17,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488851095] [2024-06-28 02:06:17,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488851095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:17,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:17,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:17,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139010705] [2024-06-28 02:06:17,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:17,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:17,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:17,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:17,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 216 transitions, 2439 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:17,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:17,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:17,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:19,347 INFO L124 PetriNetUnfolderBase]: 4617/7116 cut-off events. [2024-06-28 02:06:19,347 INFO L125 PetriNetUnfolderBase]: For 111320/111320 co-relation queries the response was YES. [2024-06-28 02:06:19,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39104 conditions, 7116 events. 4617/7116 cut-off events. For 111320/111320 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 42694 event pairs, 924 based on Foata normal form. 1/7113 useless extension candidates. Maximal degree in co-relation 39020. Up to 6063 conditions per place. [2024-06-28 02:06:19,416 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 194 selfloop transitions, 86 changer transitions 0/287 dead transitions. [2024-06-28 02:06:19,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 287 transitions, 3543 flow [2024-06-28 02:06:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:06:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:06:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 02:06:19,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 02:06:19,419 INFO L175 Difference]: Start difference. First operand has 179 places, 216 transitions, 2439 flow. Second operand 8 states and 204 transitions. [2024-06-28 02:06:19,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 287 transitions, 3543 flow [2024-06-28 02:06:19,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 287 transitions, 3439 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:06:19,617 INFO L231 Difference]: Finished difference. Result has 181 places, 225 transitions, 2669 flow [2024-06-28 02:06:19,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2669, PETRI_PLACES=181, PETRI_TRANSITIONS=225} [2024-06-28 02:06:19,618 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 131 predicate places. [2024-06-28 02:06:19,618 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 225 transitions, 2669 flow [2024-06-28 02:06:19,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:19,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:19,618 INFO 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 02:06:19,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:06:19,619 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:19,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash 121489993, now seen corresponding path program 1 times [2024-06-28 02:06:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:19,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598314639] [2024-06-28 02:06:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:19,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:22,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598314639] [2024-06-28 02:06:22,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598314639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:22,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:22,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:22,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276164794] [2024-06-28 02:06:22,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:22,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:22,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:22,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:22,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:22,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:22,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 225 transitions, 2669 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:22,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:22,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:22,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:24,673 INFO L124 PetriNetUnfolderBase]: 4767/7322 cut-off events. [2024-06-28 02:06:24,674 INFO L125 PetriNetUnfolderBase]: For 126472/126472 co-relation queries the response was YES. [2024-06-28 02:06:24,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41599 conditions, 7322 events. 4767/7322 cut-off events. For 126472/126472 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 43862 event pairs, 925 based on Foata normal form. 2/7320 useless extension candidates. Maximal degree in co-relation 41514. Up to 6379 conditions per place. [2024-06-28 02:06:24,739 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 225 selfloop transitions, 82 changer transitions 0/314 dead transitions. [2024-06-28 02:06:24,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 314 transitions, 3911 flow [2024-06-28 02:06:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:06:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:06:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-28 02:06:24,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282608695652173 [2024-06-28 02:06:24,741 INFO L175 Difference]: Start difference. First operand has 181 places, 225 transitions, 2669 flow. Second operand 10 states and 243 transitions. [2024-06-28 02:06:24,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 314 transitions, 3911 flow [2024-06-28 02:06:24,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 314 transitions, 3809 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 02:06:24,929 INFO L231 Difference]: Finished difference. Result has 190 places, 243 transitions, 3019 flow [2024-06-28 02:06:24,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3019, PETRI_PLACES=190, PETRI_TRANSITIONS=243} [2024-06-28 02:06:24,929 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 140 predicate places. [2024-06-28 02:06:24,929 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 243 transitions, 3019 flow [2024-06-28 02:06:24,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:24,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:24,930 INFO 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 02:06:24,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:06:24,930 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:24,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash 121489652, now seen corresponding path program 3 times [2024-06-28 02:06:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:24,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703734993] [2024-06-28 02:06:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:24,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:27,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:27,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703734993] [2024-06-28 02:06:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703734993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:27,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:27,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:27,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63221519] [2024-06-28 02:06:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:27,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:27,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:27,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:27,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:27,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 243 transitions, 3019 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:27,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:27,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:27,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:30,097 INFO L124 PetriNetUnfolderBase]: 4790/7361 cut-off events. [2024-06-28 02:06:30,098 INFO L125 PetriNetUnfolderBase]: For 139911/139911 co-relation queries the response was YES. [2024-06-28 02:06:30,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43836 conditions, 7361 events. 4790/7361 cut-off events. For 139911/139911 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 44252 event pairs, 933 based on Foata normal form. 1/7358 useless extension candidates. Maximal degree in co-relation 43747. Up to 6289 conditions per place. [2024-06-28 02:06:30,167 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 209 selfloop transitions, 88 changer transitions 0/304 dead transitions. [2024-06-28 02:06:30,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 304 transitions, 4071 flow [2024-06-28 02:06:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:06:30,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:06:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:06:30,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 02:06:30,168 INFO L175 Difference]: Start difference. First operand has 190 places, 243 transitions, 3019 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:06:30,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 304 transitions, 4071 flow [2024-06-28 02:06:30,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 304 transitions, 3883 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:30,429 INFO L231 Difference]: Finished difference. Result has 193 places, 246 transitions, 3057 flow [2024-06-28 02:06:30,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3057, PETRI_PLACES=193, PETRI_TRANSITIONS=246} [2024-06-28 02:06:30,429 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 143 predicate places. [2024-06-28 02:06:30,429 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 246 transitions, 3057 flow [2024-06-28 02:06:30,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:30,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:30,430 INFO 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 02:06:30,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:06:30,430 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:30,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 125209063, now seen corresponding path program 2 times [2024-06-28 02:06:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:30,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4303373] [2024-06-28 02:06:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:30,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:33,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4303373] [2024-06-28 02:06:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4303373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:33,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:33,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:33,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424452735] [2024-06-28 02:06:33,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:33,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:33,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:33,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 246 transitions, 3057 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:33,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:33,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:33,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:35,699 INFO L124 PetriNetUnfolderBase]: 4996/7713 cut-off events. [2024-06-28 02:06:35,699 INFO L125 PetriNetUnfolderBase]: For 149728/149728 co-relation queries the response was YES. [2024-06-28 02:06:35,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45826 conditions, 7713 events. 4996/7713 cut-off events. For 149728/149728 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 46739 event pairs, 948 based on Foata normal form. 4/7715 useless extension candidates. Maximal degree in co-relation 45735. Up to 6755 conditions per place. [2024-06-28 02:06:35,775 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 266 selfloop transitions, 65 changer transitions 0/338 dead transitions. [2024-06-28 02:06:35,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 338 transitions, 4381 flow [2024-06-28 02:06:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:06:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:06:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-28 02:06:35,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260869565217391 [2024-06-28 02:06:35,777 INFO L175 Difference]: Start difference. First operand has 193 places, 246 transitions, 3057 flow. Second operand 10 states and 242 transitions. [2024-06-28 02:06:35,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 338 transitions, 4381 flow [2024-06-28 02:06:36,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 338 transitions, 4216 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:36,115 INFO L231 Difference]: Finished difference. Result has 199 places, 268 transitions, 3410 flow [2024-06-28 02:06:36,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3410, PETRI_PLACES=199, PETRI_TRANSITIONS=268} [2024-06-28 02:06:36,116 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 149 predicate places. [2024-06-28 02:06:36,116 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 268 transitions, 3410 flow [2024-06-28 02:06:36,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:36,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:36,116 INFO 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 02:06:36,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:06:36,117 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:36,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 269306983, now seen corresponding path program 3 times [2024-06-28 02:06:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:36,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860296064] [2024-06-28 02:06:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:39,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:39,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860296064] [2024-06-28 02:06:39,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860296064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:39,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:39,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:39,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127821343] [2024-06-28 02:06:39,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:39,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:39,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:39,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:39,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:39,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:39,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 268 transitions, 3410 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:39,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:39,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:39,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:41,953 INFO L124 PetriNetUnfolderBase]: 4984/7703 cut-off events. [2024-06-28 02:06:41,953 INFO L125 PetriNetUnfolderBase]: For 160191/160191 co-relation queries the response was YES. [2024-06-28 02:06:41,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46946 conditions, 7703 events. 4984/7703 cut-off events. For 160191/160191 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 46787 event pairs, 948 based on Foata normal form. 4/7705 useless extension candidates. Maximal degree in co-relation 46853. Up to 6745 conditions per place. [2024-06-28 02:06:42,017 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 271 selfloop transitions, 66 changer transitions 0/344 dead transitions. [2024-06-28 02:06:42,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 344 transitions, 4389 flow [2024-06-28 02:06:42,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:06:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:06:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 262 transitions. [2024-06-28 02:06:42,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177865612648221 [2024-06-28 02:06:42,018 INFO L175 Difference]: Start difference. First operand has 199 places, 268 transitions, 3410 flow. Second operand 11 states and 262 transitions. [2024-06-28 02:06:42,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 344 transitions, 4389 flow [2024-06-28 02:06:42,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 344 transitions, 4136 flow, removed 99 selfloop flow, removed 6 redundant places. [2024-06-28 02:06:42,321 INFO L231 Difference]: Finished difference. Result has 204 places, 269 transitions, 3332 flow [2024-06-28 02:06:42,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3332, PETRI_PLACES=204, PETRI_TRANSITIONS=269} [2024-06-28 02:06:42,321 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 154 predicate places. [2024-06-28 02:06:42,322 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 269 transitions, 3332 flow [2024-06-28 02:06:42,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:42,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:42,322 INFO 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 02:06:42,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:06:42,322 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:42,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash 269099252, now seen corresponding path program 4 times [2024-06-28 02:06:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:42,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243663354] [2024-06-28 02:06:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:45,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243663354] [2024-06-28 02:06:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243663354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:45,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:45,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159871666] [2024-06-28 02:06:45,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:45,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:45,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:45,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 269 transitions, 3332 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:45,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:45,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:45,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:47,164 INFO L124 PetriNetUnfolderBase]: 5007/7752 cut-off events. [2024-06-28 02:06:47,164 INFO L125 PetriNetUnfolderBase]: For 159102/159102 co-relation queries the response was YES. [2024-06-28 02:06:47,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47056 conditions, 7752 events. 5007/7752 cut-off events. For 159102/159102 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 47310 event pairs, 967 based on Foata normal form. 1/7751 useless extension candidates. Maximal degree in co-relation 46961. Up to 7027 conditions per place. [2024-06-28 02:06:47,252 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 273 selfloop transitions, 44 changer transitions 0/324 dead transitions. [2024-06-28 02:06:47,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 324 transitions, 4247 flow [2024-06-28 02:06:47,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:06:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:06:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:06:47,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-28 02:06:47,253 INFO L175 Difference]: Start difference. First operand has 204 places, 269 transitions, 3332 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:06:47,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 324 transitions, 4247 flow [2024-06-28 02:06:47,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 324 transitions, 4103 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:06:47,594 INFO L231 Difference]: Finished difference. Result has 204 places, 272 transitions, 3336 flow [2024-06-28 02:06:47,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3336, PETRI_PLACES=204, PETRI_TRANSITIONS=272} [2024-06-28 02:06:47,595 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 154 predicate places. [2024-06-28 02:06:47,595 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 272 transitions, 3336 flow [2024-06-28 02:06:47,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:47,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:47,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:47,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:06:47,596 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:47,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1649173839, now seen corresponding path program 1 times [2024-06-28 02:06:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092587100] [2024-06-28 02:06:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:47,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:51,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:51,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092587100] [2024-06-28 02:06:51,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092587100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:51,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:51,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195776113] [2024-06-28 02:06:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:51,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:51,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:51,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:51,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:51,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:06:51,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 272 transitions, 3336 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:51,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:51,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:06:51,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:53,485 INFO L124 PetriNetUnfolderBase]: 4851/7550 cut-off events. [2024-06-28 02:06:53,485 INFO L125 PetriNetUnfolderBase]: For 175145/175161 co-relation queries the response was YES. [2024-06-28 02:06:53,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45909 conditions, 7550 events. 4851/7550 cut-off events. For 175145/175161 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 46602 event pairs, 903 based on Foata normal form. 18/7500 useless extension candidates. Maximal degree in co-relation 45813. Up to 6383 conditions per place. [2024-06-28 02:06:53,574 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 260 selfloop transitions, 45 changer transitions 0/337 dead transitions. [2024-06-28 02:06:53,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 337 transitions, 4238 flow [2024-06-28 02:06:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:53,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 02:06:53,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 02:06:53,575 INFO L175 Difference]: Start difference. First operand has 204 places, 272 transitions, 3336 flow. Second operand 9 states and 222 transitions. [2024-06-28 02:06:53,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 337 transitions, 4238 flow [2024-06-28 02:06:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 337 transitions, 4135 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:06:53,904 INFO L231 Difference]: Finished difference. Result has 207 places, 274 transitions, 3380 flow [2024-06-28 02:06:53,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3380, PETRI_PLACES=207, PETRI_TRANSITIONS=274} [2024-06-28 02:06:53,905 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 157 predicate places. [2024-06-28 02:06:53,905 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 274 transitions, 3380 flow [2024-06-28 02:06:53,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:53,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:53,905 INFO 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 02:06:53,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:06:53,905 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:53,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1454080238, now seen corresponding path program 5 times [2024-06-28 02:06:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747491064] [2024-06-28 02:06:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:57,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747491064] [2024-06-28 02:06:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747491064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:57,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823830457] [2024-06-28 02:06:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:57,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:57,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:57,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 274 transitions, 3380 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:57,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:57,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:57,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:59,485 INFO L124 PetriNetUnfolderBase]: 5242/8086 cut-off events. [2024-06-28 02:06:59,485 INFO L125 PetriNetUnfolderBase]: For 177377/177377 co-relation queries the response was YES. [2024-06-28 02:06:59,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49366 conditions, 8086 events. 5242/8086 cut-off events. For 177377/177377 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 49380 event pairs, 1005 based on Foata normal form. 1/8079 useless extension candidates. Maximal degree in co-relation 49269. Up to 6903 conditions per place. [2024-06-28 02:06:59,580 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 231 selfloop transitions, 102 changer transitions 0/340 dead transitions. [2024-06-28 02:06:59,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 340 transitions, 4666 flow [2024-06-28 02:06:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:06:59,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-06-28 02:06:59,582 INFO L175 Difference]: Start difference. First operand has 207 places, 274 transitions, 3380 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:06:59,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 340 transitions, 4666 flow [2024-06-28 02:06:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 340 transitions, 4543 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:06:59,999 INFO L231 Difference]: Finished difference. Result has 210 places, 279 transitions, 3557 flow [2024-06-28 02:06:59,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3557, PETRI_PLACES=210, PETRI_TRANSITIONS=279} [2024-06-28 02:06:59,999 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 160 predicate places. [2024-06-28 02:06:59,999 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 279 transitions, 3557 flow [2024-06-28 02:06:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:59,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:59,999 INFO 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 02:07:00,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:07:00,000 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:00,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1453811127, now seen corresponding path program 4 times [2024-06-28 02:07:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:00,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616077412] [2024-06-28 02:07:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:00,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:02,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616077412] [2024-06-28 02:07:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616077412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881900139] [2024-06-28 02:07:02,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:02,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:02,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:02,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 279 transitions, 3557 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:02,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:02,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:02,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:05,292 INFO L124 PetriNetUnfolderBase]: 5288/8163 cut-off events. [2024-06-28 02:07:05,292 INFO L125 PetriNetUnfolderBase]: For 180876/180885 co-relation queries the response was YES. [2024-06-28 02:07:05,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49621 conditions, 8163 events. 5288/8163 cut-off events. For 180876/180885 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 49936 event pairs, 1012 based on Foata normal form. 8/8165 useless extension candidates. Maximal degree in co-relation 49522. Up to 7238 conditions per place. [2024-06-28 02:07:05,375 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 266 selfloop transitions, 74 changer transitions 0/347 dead transitions. [2024-06-28 02:07:05,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 347 transitions, 4690 flow [2024-06-28 02:07:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:07:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:07:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:07:05,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-28 02:07:05,376 INFO L175 Difference]: Start difference. First operand has 210 places, 279 transitions, 3557 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:07:05,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 347 transitions, 4690 flow [2024-06-28 02:07:05,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 347 transitions, 4442 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:05,713 INFO L231 Difference]: Finished difference. Result has 214 places, 284 transitions, 3527 flow [2024-06-28 02:07:05,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3527, PETRI_PLACES=214, PETRI_TRANSITIONS=284} [2024-06-28 02:07:05,713 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 164 predicate places. [2024-06-28 02:07:05,714 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 284 transitions, 3527 flow [2024-06-28 02:07:05,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:05,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:05,714 INFO 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 02:07:05,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:07:05,714 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:05,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash -856243878, now seen corresponding path program 6 times [2024-06-28 02:07:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:05,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573137319] [2024-06-28 02:07:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:05,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:08,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:08,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573137319] [2024-06-28 02:07:08,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573137319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:08,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190268933] [2024-06-28 02:07:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:08,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:08,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:08,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 284 transitions, 3527 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:08,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:08,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:08,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:10,843 INFO L124 PetriNetUnfolderBase]: 5311/8201 cut-off events. [2024-06-28 02:07:10,843 INFO L125 PetriNetUnfolderBase]: For 182297/182299 co-relation queries the response was YES. [2024-06-28 02:07:10,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49668 conditions, 8201 events. 5311/8201 cut-off events. For 182297/182299 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 50287 event pairs, 1028 based on Foata normal form. 1/8194 useless extension candidates. Maximal degree in co-relation 49567. Up to 6989 conditions per place. [2024-06-28 02:07:10,935 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 235 selfloop transitions, 101 changer transitions 0/343 dead transitions. [2024-06-28 02:07:10,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 343 transitions, 4739 flow [2024-06-28 02:07:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:07:10,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-28 02:07:10,936 INFO L175 Difference]: Start difference. First operand has 214 places, 284 transitions, 3527 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:07:10,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 343 transitions, 4739 flow [2024-06-28 02:07:11,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 343 transitions, 4622 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:11,372 INFO L231 Difference]: Finished difference. Result has 217 places, 287 transitions, 3662 flow [2024-06-28 02:07:11,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3662, PETRI_PLACES=217, PETRI_TRANSITIONS=287} [2024-06-28 02:07:11,372 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 167 predicate places. [2024-06-28 02:07:11,372 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 287 transitions, 3662 flow [2024-06-28 02:07:11,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:11,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:11,373 INFO 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 02:07:11,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:07:11,373 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:11,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1128684057, now seen corresponding path program 5 times [2024-06-28 02:07:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:11,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560698453] [2024-06-28 02:07:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:14,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560698453] [2024-06-28 02:07:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560698453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:14,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:14,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263395928] [2024-06-28 02:07:14,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:14,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:14,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:14,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:14,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 287 transitions, 3662 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:14,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:14,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:14,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:16,930 INFO L124 PetriNetUnfolderBase]: 5429/8386 cut-off events. [2024-06-28 02:07:16,930 INFO L125 PetriNetUnfolderBase]: For 193554/193563 co-relation queries the response was YES. [2024-06-28 02:07:16,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51520 conditions, 8386 events. 5429/8386 cut-off events. For 193554/193563 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 51458 event pairs, 1030 based on Foata normal form. 8/8388 useless extension candidates. Maximal degree in co-relation 51417. Up to 6910 conditions per place. [2024-06-28 02:07:17,033 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 250 selfloop transitions, 105 changer transitions 0/362 dead transitions. [2024-06-28 02:07:17,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 362 transitions, 5138 flow [2024-06-28 02:07:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:07:17,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 02:07:17,034 INFO L175 Difference]: Start difference. First operand has 217 places, 287 transitions, 3662 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:07:17,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 362 transitions, 5138 flow [2024-06-28 02:07:17,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 362 transitions, 4940 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:17,437 INFO L231 Difference]: Finished difference. Result has 222 places, 305 transitions, 4001 flow [2024-06-28 02:07:17,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4001, PETRI_PLACES=222, PETRI_TRANSITIONS=305} [2024-06-28 02:07:17,437 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 172 predicate places. [2024-06-28 02:07:17,438 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 305 transitions, 4001 flow [2024-06-28 02:07:17,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:17,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:17,438 INFO 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 02:07:17,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:07:17,438 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1129070007, now seen corresponding path program 6 times [2024-06-28 02:07:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005718982] [2024-06-28 02:07:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:20,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005718982] [2024-06-28 02:07:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005718982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:20,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:20,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415618463] [2024-06-28 02:07:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:20,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:20,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:20,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:20,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 305 transitions, 4001 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:20,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:20,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:22,489 INFO L124 PetriNetUnfolderBase]: 5423/8372 cut-off events. [2024-06-28 02:07:22,489 INFO L125 PetriNetUnfolderBase]: For 201218/201227 co-relation queries the response was YES. [2024-06-28 02:07:22,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52909 conditions, 8372 events. 5423/8372 cut-off events. For 201218/201227 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 51404 event pairs, 1018 based on Foata normal form. 8/8374 useless extension candidates. Maximal degree in co-relation 52803. Up to 7460 conditions per place. [2024-06-28 02:07:22,579 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 278 selfloop transitions, 71 changer transitions 0/356 dead transitions. [2024-06-28 02:07:22,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 356 transitions, 4982 flow [2024-06-28 02:07:22,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:07:22,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 02:07:22,581 INFO L175 Difference]: Start difference. First operand has 222 places, 305 transitions, 4001 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:07:22,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 356 transitions, 4982 flow [2024-06-28 02:07:22,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 356 transitions, 4860 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-28 02:07:22,964 INFO L231 Difference]: Finished difference. Result has 228 places, 306 transitions, 4049 flow [2024-06-28 02:07:22,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4049, PETRI_PLACES=228, PETRI_TRANSITIONS=306} [2024-06-28 02:07:22,965 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 178 predicate places. [2024-06-28 02:07:22,965 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 306 transitions, 4049 flow [2024-06-28 02:07:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:22,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:22,965 INFO 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 02:07:22,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:07:22,965 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:22,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1129070348, now seen corresponding path program 7 times [2024-06-28 02:07:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525542151] [2024-06-28 02:07:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:25,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:25,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525542151] [2024-06-28 02:07:25,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525542151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:25,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:25,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:25,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129053174] [2024-06-28 02:07:25,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:25,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:25,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:25,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:25,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:25,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 306 transitions, 4049 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:25,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:25,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:25,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:28,260 INFO L124 PetriNetUnfolderBase]: 5446/8376 cut-off events. [2024-06-28 02:07:28,260 INFO L125 PetriNetUnfolderBase]: For 204421/204423 co-relation queries the response was YES. [2024-06-28 02:07:28,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53121 conditions, 8376 events. 5446/8376 cut-off events. For 204421/204423 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 51172 event pairs, 1020 based on Foata normal form. 1/8369 useless extension candidates. Maximal degree in co-relation 53012. Up to 7165 conditions per place. [2024-06-28 02:07:28,499 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 244 selfloop transitions, 107 changer transitions 0/358 dead transitions. [2024-06-28 02:07:28,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 358 transitions, 5182 flow [2024-06-28 02:07:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:07:28,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-28 02:07:28,501 INFO L175 Difference]: Start difference. First operand has 228 places, 306 transitions, 4049 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:07:28,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 358 transitions, 5182 flow [2024-06-28 02:07:28,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 358 transitions, 5029 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:07:28,911 INFO L231 Difference]: Finished difference. Result has 230 places, 309 transitions, 4163 flow [2024-06-28 02:07:28,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4163, PETRI_PLACES=230, PETRI_TRANSITIONS=309} [2024-06-28 02:07:28,911 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 180 predicate places. [2024-06-28 02:07:28,911 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 309 transitions, 4163 flow [2024-06-28 02:07:28,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:28,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:28,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:28,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:07:28,912 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:28,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 169158247, now seen corresponding path program 7 times [2024-06-28 02:07:28,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433498086] [2024-06-28 02:07:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:31,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433498086] [2024-06-28 02:07:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433498086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:31,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:31,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:31,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214838331] [2024-06-28 02:07:31,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:31,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:31,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:31,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:31,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:31,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 309 transitions, 4163 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:31,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:31,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:31,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:34,507 INFO L124 PetriNetUnfolderBase]: 5728/8862 cut-off events. [2024-06-28 02:07:34,507 INFO L125 PetriNetUnfolderBase]: For 219655/219655 co-relation queries the response was YES. [2024-06-28 02:07:34,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56262 conditions, 8862 events. 5728/8862 cut-off events. For 219655/219655 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 55081 event pairs, 975 based on Foata normal form. 4/8864 useless extension candidates. Maximal degree in co-relation 56152. Up to 7437 conditions per place. [2024-06-28 02:07:34,768 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 283 selfloop transitions, 129 changer transitions 0/419 dead transitions. [2024-06-28 02:07:34,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 419 transitions, 5876 flow [2024-06-28 02:07:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:07:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:07:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-28 02:07:34,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474308300395256 [2024-06-28 02:07:34,770 INFO L175 Difference]: Start difference. First operand has 230 places, 309 transitions, 4163 flow. Second operand 11 states and 277 transitions. [2024-06-28 02:07:34,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 419 transitions, 5876 flow [2024-06-28 02:07:35,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 419 transitions, 5696 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:35,225 INFO L231 Difference]: Finished difference. Result has 238 places, 333 transitions, 4705 flow [2024-06-28 02:07:35,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4705, PETRI_PLACES=238, PETRI_TRANSITIONS=333} [2024-06-28 02:07:35,226 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 188 predicate places. [2024-06-28 02:07:35,226 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 333 transitions, 4705 flow [2024-06-28 02:07:35,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:35,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:35,226 INFO 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 02:07:35,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:07:35,226 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:35,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:35,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1282731454, now seen corresponding path program 8 times [2024-06-28 02:07:35,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:35,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316862452] [2024-06-28 02:07:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:35,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:38,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316862452] [2024-06-28 02:07:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316862452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:38,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:38,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94068200] [2024-06-28 02:07:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:38,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:38,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 333 transitions, 4705 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:38,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:38,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:38,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:40,451 INFO L124 PetriNetUnfolderBase]: 5725/8892 cut-off events. [2024-06-28 02:07:40,451 INFO L125 PetriNetUnfolderBase]: For 234645/234645 co-relation queries the response was YES. [2024-06-28 02:07:40,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58443 conditions, 8892 events. 5725/8892 cut-off events. For 234645/234645 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 55600 event pairs, 1040 based on Foata normal form. 1/8891 useless extension candidates. Maximal degree in co-relation 58330. Up to 7716 conditions per place. [2024-06-28 02:07:40,564 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 312 selfloop transitions, 90 changer transitions 0/409 dead transitions. [2024-06-28 02:07:40,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 409 transitions, 5968 flow [2024-06-28 02:07:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:07:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:07:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 02:07:40,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2024-06-28 02:07:40,566 INFO L175 Difference]: Start difference. First operand has 238 places, 333 transitions, 4705 flow. Second operand 9 states and 233 transitions. [2024-06-28 02:07:40,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 409 transitions, 5968 flow [2024-06-28 02:07:41,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 409 transitions, 5732 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-06-28 02:07:41,206 INFO L231 Difference]: Finished difference. Result has 241 places, 333 transitions, 4666 flow [2024-06-28 02:07:41,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4469, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4666, PETRI_PLACES=241, PETRI_TRANSITIONS=333} [2024-06-28 02:07:41,207 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 191 predicate places. [2024-06-28 02:07:41,207 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 333 transitions, 4666 flow [2024-06-28 02:07:41,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:41,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:41,207 INFO 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 02:07:41,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:07:41,208 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:41,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash 540263587, now seen corresponding path program 8 times [2024-06-28 02:07:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143014784] [2024-06-28 02:07:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:43,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143014784] [2024-06-28 02:07:43,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143014784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:43,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:43,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:43,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847543929] [2024-06-28 02:07:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:43,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:43,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:43,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:43,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:43,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 333 transitions, 4666 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:43,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:43,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:46,499 INFO L124 PetriNetUnfolderBase]: 5879/9080 cut-off events. [2024-06-28 02:07:46,499 INFO L125 PetriNetUnfolderBase]: For 250121/250123 co-relation queries the response was YES. [2024-06-28 02:07:46,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60360 conditions, 9080 events. 5879/9080 cut-off events. For 250121/250123 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 56586 event pairs, 969 based on Foata normal form. 4/9076 useless extension candidates. Maximal degree in co-relation 60245. Up to 7137 conditions per place. [2024-06-28 02:07:46,619 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 256 selfloop transitions, 152 changer transitions 0/415 dead transitions. [2024-06-28 02:07:46,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 415 transitions, 6345 flow [2024-06-28 02:07:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:07:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:07:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-28 02:07:46,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282608695652173 [2024-06-28 02:07:46,620 INFO L175 Difference]: Start difference. First operand has 241 places, 333 transitions, 4666 flow. Second operand 10 states and 243 transitions. [2024-06-28 02:07:46,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 415 transitions, 6345 flow [2024-06-28 02:07:47,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 415 transitions, 6032 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:07:47,242 INFO L231 Difference]: Finished difference. Result has 241 places, 346 transitions, 5004 flow [2024-06-28 02:07:47,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5004, PETRI_PLACES=241, PETRI_TRANSITIONS=346} [2024-06-28 02:07:47,242 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 191 predicate places. [2024-06-28 02:07:47,242 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 346 transitions, 5004 flow [2024-06-28 02:07:47,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:47,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:47,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:47,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:07:47,243 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:47,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1553735237, now seen corresponding path program 9 times [2024-06-28 02:07:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964958148] [2024-06-28 02:07:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:49,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:49,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964958148] [2024-06-28 02:07:49,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964958148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:49,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:49,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:49,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239099506] [2024-06-28 02:07:49,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:50,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:50,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 346 transitions, 5004 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:50,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:50,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:50,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:52,735 INFO L124 PetriNetUnfolderBase]: 5867/9090 cut-off events. [2024-06-28 02:07:52,736 INFO L125 PetriNetUnfolderBase]: For 247402/247402 co-relation queries the response was YES. [2024-06-28 02:07:52,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62080 conditions, 9090 events. 5867/9090 cut-off events. For 247402/247402 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 56892 event pairs, 1009 based on Foata normal form. 4/9092 useless extension candidates. Maximal degree in co-relation 61964. Up to 7631 conditions per place. [2024-06-28 02:07:52,847 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 276 selfloop transitions, 129 changer transitions 0/412 dead transitions. [2024-06-28 02:07:52,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 412 transitions, 6165 flow [2024-06-28 02:07:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:07:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:07:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 02:07:52,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483091787439613 [2024-06-28 02:07:52,848 INFO L175 Difference]: Start difference. First operand has 241 places, 346 transitions, 5004 flow. Second operand 9 states and 227 transitions. [2024-06-28 02:07:52,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 412 transitions, 6165 flow [2024-06-28 02:07:53,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 412 transitions, 5841 flow, removed 102 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:53,549 INFO L231 Difference]: Finished difference. Result has 245 places, 346 transitions, 4960 flow [2024-06-28 02:07:53,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4680, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4960, PETRI_PLACES=245, PETRI_TRANSITIONS=346} [2024-06-28 02:07:53,549 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 195 predicate places. [2024-06-28 02:07:53,549 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 346 transitions, 4960 flow [2024-06-28 02:07:53,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:53,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:53,549 INFO 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 02:07:53,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:07:53,550 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:53,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash -518531223, now seen corresponding path program 10 times [2024-06-28 02:07:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412678355] [2024-06-28 02:07:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:53,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:56,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:56,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412678355] [2024-06-28 02:07:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412678355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795924105] [2024-06-28 02:07:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:56,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:56,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:56,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:07:56,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 346 transitions, 4960 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:56,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:56,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:07:56,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:58,753 INFO L124 PetriNetUnfolderBase]: 5861/9091 cut-off events. [2024-06-28 02:07:58,754 INFO L125 PetriNetUnfolderBase]: For 228733/228735 co-relation queries the response was YES. [2024-06-28 02:07:58,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60450 conditions, 9091 events. 5861/9091 cut-off events. For 228733/228735 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 56949 event pairs, 1111 based on Foata normal form. 2/9085 useless extension candidates. Maximal degree in co-relation 60332. Up to 7998 conditions per place. [2024-06-28 02:07:58,857 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 307 selfloop transitions, 78 changer transitions 0/392 dead transitions. [2024-06-28 02:07:58,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 392 transitions, 5966 flow [2024-06-28 02:07:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:07:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:07:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:07:58,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-28 02:07:58,859 INFO L175 Difference]: Start difference. First operand has 245 places, 346 transitions, 4960 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:07:58,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 392 transitions, 5966 flow [2024-06-28 02:07:59,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 392 transitions, 5670 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:07:59,459 INFO L231 Difference]: Finished difference. Result has 244 places, 346 transitions, 4833 flow [2024-06-28 02:07:59,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4670, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4833, PETRI_PLACES=244, PETRI_TRANSITIONS=346} [2024-06-28 02:07:59,459 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 194 predicate places. [2024-06-28 02:07:59,459 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 346 transitions, 4833 flow [2024-06-28 02:07:59,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:59,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:59,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:59,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:07:59,460 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:59,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1827322842, now seen corresponding path program 9 times [2024-06-28 02:07:59,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:59,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312738535] [2024-06-28 02:07:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:59,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312738535] [2024-06-28 02:08:02,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312738535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:02,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:02,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:02,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221868464] [2024-06-28 02:08:02,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:02,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:02,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:02,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:02,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:02,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:08:02,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 346 transitions, 4833 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:02,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:02,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:08:02,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:04,353 INFO L124 PetriNetUnfolderBase]: 5858/9089 cut-off events. [2024-06-28 02:08:04,354 INFO L125 PetriNetUnfolderBase]: For 220385/220387 co-relation queries the response was YES. [2024-06-28 02:08:04,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59572 conditions, 9089 events. 5858/9089 cut-off events. For 220385/220387 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 56963 event pairs, 1109 based on Foata normal form. 1/9082 useless extension candidates. Maximal degree in co-relation 59453. Up to 7897 conditions per place. [2024-06-28 02:08:04,466 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 306 selfloop transitions, 83 changer transitions 0/396 dead transitions. [2024-06-28 02:08:04,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 396 transitions, 5887 flow [2024-06-28 02:08:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:08:04,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-28 02:08:04,467 INFO L175 Difference]: Start difference. First operand has 244 places, 346 transitions, 4833 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:08:04,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 396 transitions, 5887 flow [2024-06-28 02:08:05,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 396 transitions, 5710 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:05,188 INFO L231 Difference]: Finished difference. Result has 245 places, 346 transitions, 4833 flow [2024-06-28 02:08:05,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4656, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4833, PETRI_PLACES=245, PETRI_TRANSITIONS=346} [2024-06-28 02:08:05,189 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 195 predicate places. [2024-06-28 02:08:05,189 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 346 transitions, 4833 flow [2024-06-28 02:08:05,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:05,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:05,189 INFO 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 02:08:05,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:08:05,190 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:05,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1827709133, now seen corresponding path program 11 times [2024-06-28 02:08:05,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:05,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335946187] [2024-06-28 02:08:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:05,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:07,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335946187] [2024-06-28 02:08:07,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335946187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:07,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:07,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106810695] [2024-06-28 02:08:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:07,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:08:07,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 346 transitions, 4833 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:07,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:07,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:08:07,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:10,093 INFO L124 PetriNetUnfolderBase]: 5934/9188 cut-off events. [2024-06-28 02:08:10,093 INFO L125 PetriNetUnfolderBase]: For 227669/227671 co-relation queries the response was YES. [2024-06-28 02:08:10,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60408 conditions, 9188 events. 5934/9188 cut-off events. For 227669/227671 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 57413 event pairs, 1091 based on Foata normal form. 2/9182 useless extension candidates. Maximal degree in co-relation 60288. Up to 7184 conditions per place. [2024-06-28 02:08:10,209 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 242 selfloop transitions, 152 changer transitions 0/401 dead transitions. [2024-06-28 02:08:10,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 401 transitions, 6110 flow [2024-06-28 02:08:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:08:10,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-28 02:08:10,210 INFO L175 Difference]: Start difference. First operand has 245 places, 346 transitions, 4833 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:08:10,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 401 transitions, 6110 flow [2024-06-28 02:08:10,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 401 transitions, 5911 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:08:10,775 INFO L231 Difference]: Finished difference. Result has 245 places, 356 transitions, 5148 flow [2024-06-28 02:08:10,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4636, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5148, PETRI_PLACES=245, PETRI_TRANSITIONS=356} [2024-06-28 02:08:10,776 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 195 predicate places. [2024-06-28 02:08:10,776 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 356 transitions, 5148 flow [2024-06-28 02:08:10,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:10,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:10,776 INFO 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 02:08:10,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:08:10,776 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:10,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1833071513, now seen corresponding path program 12 times [2024-06-28 02:08:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:10,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058987808] [2024-06-28 02:08:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:10,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:13,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:13,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058987808] [2024-06-28 02:08:13,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058987808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:13,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:13,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832739053] [2024-06-28 02:08:13,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:13,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:13,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:08:13,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 356 transitions, 5148 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:13,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:13,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:08:13,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:16,152 INFO L124 PetriNetUnfolderBase]: 5928/9164 cut-off events. [2024-06-28 02:08:16,152 INFO L125 PetriNetUnfolderBase]: For 227558/227560 co-relation queries the response was YES. [2024-06-28 02:08:16,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61346 conditions, 9164 events. 5928/9164 cut-off events. For 227558/227560 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 57218 event pairs, 998 based on Foata normal form. 2/9158 useless extension candidates. Maximal degree in co-relation 61225. Up to 7179 conditions per place. [2024-06-28 02:08:16,273 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 251 selfloop transitions, 158 changer transitions 0/416 dead transitions. [2024-06-28 02:08:16,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 416 transitions, 6426 flow [2024-06-28 02:08:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:08:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:08:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 02:08:16,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314009661835749 [2024-06-28 02:08:16,275 INFO L175 Difference]: Start difference. First operand has 245 places, 356 transitions, 5148 flow. Second operand 9 states and 220 transitions. [2024-06-28 02:08:16,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 416 transitions, 6426 flow [2024-06-28 02:08:16,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 416 transitions, 6186 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 02:08:16,989 INFO L231 Difference]: Finished difference. Result has 251 places, 356 transitions, 5231 flow [2024-06-28 02:08:16,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4908, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5231, PETRI_PLACES=251, PETRI_TRANSITIONS=356} [2024-06-28 02:08:16,990 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 201 predicate places. [2024-06-28 02:08:16,990 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 356 transitions, 5231 flow [2024-06-28 02:08:16,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:16,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:16,990 INFO 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 02:08:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:08:16,991 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:16,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 169373573, now seen corresponding path program 2 times [2024-06-28 02:08:16,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:16,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369724162] [2024-06-28 02:08:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:20,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369724162] [2024-06-28 02:08:20,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369724162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:20,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:20,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105431590] [2024-06-28 02:08:20,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:20,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:20,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:20,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:08:20,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 356 transitions, 5231 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:20,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:20,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:08:20,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:22,940 INFO L124 PetriNetUnfolderBase]: 5698/8857 cut-off events. [2024-06-28 02:08:22,941 INFO L125 PetriNetUnfolderBase]: For 248618/248668 co-relation queries the response was YES. [2024-06-28 02:08:23,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59572 conditions, 8857 events. 5698/8857 cut-off events. For 248618/248668 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 56043 event pairs, 980 based on Foata normal form. 52/8818 useless extension candidates. Maximal degree in co-relation 59450. Up to 7220 conditions per place. [2024-06-28 02:08:23,065 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 309 selfloop transitions, 53 changer transitions 0/406 dead transitions. [2024-06-28 02:08:23,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 406 transitions, 6196 flow [2024-06-28 02:08:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:08:23,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-28 02:08:23,067 INFO L175 Difference]: Start difference. First operand has 251 places, 356 transitions, 5231 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:08:23,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 406 transitions, 6196 flow [2024-06-28 02:08:23,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 406 transitions, 5780 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:08:23,759 INFO L231 Difference]: Finished difference. Result has 249 places, 358 transitions, 4993 flow [2024-06-28 02:08:23,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4993, PETRI_PLACES=249, PETRI_TRANSITIONS=358} [2024-06-28 02:08:23,759 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 199 predicate places. [2024-06-28 02:08:23,760 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 358 transitions, 4993 flow [2024-06-28 02:08:23,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:23,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:23,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:23,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:08:23,760 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:23,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash 540271523, now seen corresponding path program 3 times [2024-06-28 02:08:23,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:23,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954792964] [2024-06-28 02:08:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:23,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954792964] [2024-06-28 02:08:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954792964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:27,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:27,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:27,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729107015] [2024-06-28 02:08:27,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:27,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:27,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:27,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:27,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:27,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:08:27,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 358 transitions, 4993 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:27,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:27,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:08:27,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:29,790 INFO L124 PetriNetUnfolderBase]: 5882/9217 cut-off events. [2024-06-28 02:08:29,790 INFO L125 PetriNetUnfolderBase]: For 257515/257541 co-relation queries the response was YES. [2024-06-28 02:08:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60840 conditions, 9217 events. 5882/9217 cut-off events. For 257515/257541 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 59145 event pairs, 981 based on Foata normal form. 16/9127 useless extension candidates. Maximal degree in co-relation 60718. Up to 7646 conditions per place. [2024-06-28 02:08:29,923 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 304 selfloop transitions, 54 changer transitions 0/402 dead transitions. [2024-06-28 02:08:29,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 402 transitions, 5969 flow [2024-06-28 02:08:29,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 02:08:29,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-28 02:08:29,925 INFO L175 Difference]: Start difference. First operand has 249 places, 358 transitions, 4993 flow. Second operand 7 states and 171 transitions. [2024-06-28 02:08:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 402 transitions, 5969 flow [2024-06-28 02:08:30,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 402 transitions, 5827 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:08:30,636 INFO L231 Difference]: Finished difference. Result has 251 places, 359 transitions, 4991 flow [2024-06-28 02:08:30,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4859, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4991, PETRI_PLACES=251, PETRI_TRANSITIONS=359} [2024-06-28 02:08:30,637 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 201 predicate places. [2024-06-28 02:08:30,637 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 359 transitions, 4991 flow [2024-06-28 02:08:30,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:30,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:30,637 INFO 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 02:08:30,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:08:30,637 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:30,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash 553604003, now seen corresponding path program 4 times [2024-06-28 02:08:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63768725] [2024-06-28 02:08:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:30,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63768725] [2024-06-28 02:08:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63768725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:34,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:34,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:34,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784163811] [2024-06-28 02:08:34,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:34,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:34,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:34,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:08:34,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 359 transitions, 4991 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:34,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:34,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:08:34,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:36,691 INFO L124 PetriNetUnfolderBase]: 5968/9367 cut-off events. [2024-06-28 02:08:36,691 INFO L125 PetriNetUnfolderBase]: For 240570/240602 co-relation queries the response was YES. [2024-06-28 02:08:36,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60687 conditions, 9367 events. 5968/9367 cut-off events. For 240570/240602 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 60220 event pairs, 1003 based on Foata normal form. 12/9260 useless extension candidates. Maximal degree in co-relation 60564. Up to 7086 conditions per place. [2024-06-28 02:08:36,829 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 305 selfloop transitions, 59 changer transitions 0/408 dead transitions. [2024-06-28 02:08:36,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 408 transitions, 6075 flow [2024-06-28 02:08:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:36,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:08:36,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-28 02:08:36,831 INFO L175 Difference]: Start difference. First operand has 251 places, 359 transitions, 4991 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:08:36,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 408 transitions, 6075 flow [2024-06-28 02:08:37,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 408 transitions, 5967 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:08:37,550 INFO L231 Difference]: Finished difference. Result has 254 places, 362 transitions, 5100 flow [2024-06-28 02:08:37,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4883, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5100, PETRI_PLACES=254, PETRI_TRANSITIONS=362} [2024-06-28 02:08:37,551 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 204 predicate places. [2024-06-28 02:08:37,551 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 362 transitions, 5100 flow [2024-06-28 02:08:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:37,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:37,551 INFO 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 02:08:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:08:37,551 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:37,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash -770400785, now seen corresponding path program 1 times [2024-06-28 02:08:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:37,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202851779] [2024-06-28 02:08:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202851779] [2024-06-28 02:08:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202851779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:39,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:39,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207305401] [2024-06-28 02:08:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:39,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:39,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:08:39,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 362 transitions, 5100 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:39,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:39,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:08:39,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:42,560 INFO L124 PetriNetUnfolderBase]: 6645/10491 cut-off events. [2024-06-28 02:08:42,560 INFO L125 PetriNetUnfolderBase]: For 278639/278639 co-relation queries the response was YES. [2024-06-28 02:08:42,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68359 conditions, 10491 events. 6645/10491 cut-off events. For 278639/278639 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 68479 event pairs, 1476 based on Foata normal form. 8/10496 useless extension candidates. Maximal degree in co-relation 68234. Up to 8979 conditions per place. [2024-06-28 02:08:42,684 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 366 selfloop transitions, 47 changer transitions 0/420 dead transitions. [2024-06-28 02:08:42,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 420 transitions, 6359 flow [2024-06-28 02:08:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:08:42,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-28 02:08:42,685 INFO L175 Difference]: Start difference. First operand has 254 places, 362 transitions, 5100 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:08:42,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 420 transitions, 6359 flow [2024-06-28 02:08:43,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 420 transitions, 6279 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 02:08:43,562 INFO L231 Difference]: Finished difference. Result has 259 places, 366 transitions, 5259 flow [2024-06-28 02:08:43,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5020, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5259, PETRI_PLACES=259, PETRI_TRANSITIONS=366} [2024-06-28 02:08:43,562 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 209 predicate places. [2024-06-28 02:08:43,562 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 366 transitions, 5259 flow [2024-06-28 02:08:43,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:43,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:43,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:43,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:08:43,563 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:43,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1215515801, now seen corresponding path program 2 times [2024-06-28 02:08:43,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:43,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879791552] [2024-06-28 02:08:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:45,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:45,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879791552] [2024-06-28 02:08:45,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879791552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:45,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:45,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:45,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085249199] [2024-06-28 02:08:45,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:45,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:45,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:45,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:45,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:45,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:08:45,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 366 transitions, 5259 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:45,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:45,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:08:45,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:49,061 INFO L124 PetriNetUnfolderBase]: 6914/10880 cut-off events. [2024-06-28 02:08:49,061 INFO L125 PetriNetUnfolderBase]: For 318971/318971 co-relation queries the response was YES. [2024-06-28 02:08:49,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72802 conditions, 10880 events. 6914/10880 cut-off events. For 318971/318971 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 71045 event pairs, 1587 based on Foata normal form. 8/10885 useless extension candidates. Maximal degree in co-relation 72675. Up to 9514 conditions per place. [2024-06-28 02:08:49,184 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 372 selfloop transitions, 41 changer transitions 0/420 dead transitions. [2024-06-28 02:08:49,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 420 transitions, 6516 flow [2024-06-28 02:08:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:08:49,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:08:49,185 INFO L175 Difference]: Start difference. First operand has 259 places, 366 transitions, 5259 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:08:49,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 420 transitions, 6516 flow [2024-06-28 02:08:49,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 420 transitions, 6353 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-28 02:08:49,960 INFO L231 Difference]: Finished difference. Result has 263 places, 370 transitions, 5331 flow [2024-06-28 02:08:49,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5140, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5331, PETRI_PLACES=263, PETRI_TRANSITIONS=370} [2024-06-28 02:08:49,961 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 213 predicate places. [2024-06-28 02:08:49,961 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 370 transitions, 5331 flow [2024-06-28 02:08:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:49,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:49,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:49,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:08:49,961 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:49,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:49,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1128676121, now seen corresponding path program 3 times [2024-06-28 02:08:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:49,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418965715] [2024-06-28 02:08:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:52,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:52,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418965715] [2024-06-28 02:08:52,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418965715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:52,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:52,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:52,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443461192] [2024-06-28 02:08:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:52,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:52,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:52,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:08:52,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 370 transitions, 5331 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:52,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:52,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:08:52,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:55,469 INFO L124 PetriNetUnfolderBase]: 6891/10847 cut-off events. [2024-06-28 02:08:55,469 INFO L125 PetriNetUnfolderBase]: For 290302/290302 co-relation queries the response was YES. [2024-06-28 02:08:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70569 conditions, 10847 events. 6891/10847 cut-off events. For 290302/290302 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 70870 event pairs, 1594 based on Foata normal form. 10/10854 useless extension candidates. Maximal degree in co-relation 70440. Up to 9638 conditions per place. [2024-06-28 02:08:55,631 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 371 selfloop transitions, 37 changer transitions 0/415 dead transitions. [2024-06-28 02:08:55,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 415 transitions, 6298 flow [2024-06-28 02:08:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 02:08:55,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2024-06-28 02:08:55,632 INFO L175 Difference]: Start difference. First operand has 263 places, 370 transitions, 5331 flow. Second operand 8 states and 187 transitions. [2024-06-28 02:08:55,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 415 transitions, 6298 flow [2024-06-28 02:08:56,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 415 transitions, 6203 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:08:56,866 INFO L231 Difference]: Finished difference. Result has 267 places, 370 transitions, 5316 flow [2024-06-28 02:08:56,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5236, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5316, PETRI_PLACES=267, PETRI_TRANSITIONS=370} [2024-06-28 02:08:56,866 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 217 predicate places. [2024-06-28 02:08:56,866 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 370 transitions, 5316 flow [2024-06-28 02:08:56,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:56,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:56,867 INFO 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 02:08:56,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:08:56,867 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash 545985443, now seen corresponding path program 4 times [2024-06-28 02:08:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690207245] [2024-06-28 02:08:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:59,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690207245] [2024-06-28 02:08:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690207245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:59,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:59,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:59,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144324711] [2024-06-28 02:08:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:59,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:59,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:59,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:08:59,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 370 transitions, 5316 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:59,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:59,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:08:59,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:02,314 INFO L124 PetriNetUnfolderBase]: 7029/11049 cut-off events. [2024-06-28 02:09:02,314 INFO L125 PetriNetUnfolderBase]: For 295452/295452 co-relation queries the response was YES. [2024-06-28 02:09:02,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71684 conditions, 11049 events. 7029/11049 cut-off events. For 295452/295452 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 72173 event pairs, 1623 based on Foata normal form. 10/11056 useless extension candidates. Maximal degree in co-relation 71553. Up to 9869 conditions per place. [2024-06-28 02:09:02,484 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 384 selfloop transitions, 31 changer transitions 0/422 dead transitions. [2024-06-28 02:09:02,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 422 transitions, 6363 flow [2024-06-28 02:09:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 02:09:02,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49516908212560384 [2024-06-28 02:09:02,486 INFO L175 Difference]: Start difference. First operand has 267 places, 370 transitions, 5316 flow. Second operand 9 states and 205 transitions. [2024-06-28 02:09:02,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 422 transitions, 6363 flow [2024-06-28 02:09:03,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 422 transitions, 6281 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:03,468 INFO L231 Difference]: Finished difference. Result has 269 places, 372 transitions, 5360 flow [2024-06-28 02:09:03,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5234, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5360, PETRI_PLACES=269, PETRI_TRANSITIONS=372} [2024-06-28 02:09:03,468 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 219 predicate places. [2024-06-28 02:09:03,468 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 372 transitions, 5360 flow [2024-06-28 02:09:03,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:03,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:03,469 INFO 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 02:09:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:09:03,469 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:03,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash 346683653, now seen corresponding path program 5 times [2024-06-28 02:09:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688123104] [2024-06-28 02:09:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:03,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:05,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:05,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688123104] [2024-06-28 02:09:05,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688123104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:05,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:05,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:09:05,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436941612] [2024-06-28 02:09:05,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:05,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:09:05,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:09:05,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:09:05,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:05,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 372 transitions, 5360 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:05,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:05,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:05,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:08,804 INFO L124 PetriNetUnfolderBase]: 7132/11198 cut-off events. [2024-06-28 02:09:08,805 INFO L125 PetriNetUnfolderBase]: For 301891/301891 co-relation queries the response was YES. [2024-06-28 02:09:08,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72708 conditions, 11198 events. 7132/11198 cut-off events. For 301891/301891 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 73175 event pairs, 1650 based on Foata normal form. 10/11205 useless extension candidates. Maximal degree in co-relation 72576. Up to 10018 conditions per place. [2024-06-28 02:09:08,956 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 377 selfloop transitions, 30 changer transitions 0/414 dead transitions. [2024-06-28 02:09:08,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 414 transitions, 6371 flow [2024-06-28 02:09:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:09:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:09:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:09:08,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 02:09:08,957 INFO L175 Difference]: Start difference. First operand has 269 places, 372 transitions, 5360 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:09:08,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 414 transitions, 6371 flow [2024-06-28 02:09:09,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 414 transitions, 6283 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:09,946 INFO L231 Difference]: Finished difference. Result has 269 places, 374 transitions, 5400 flow [2024-06-28 02:09:09,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5400, PETRI_PLACES=269, PETRI_TRANSITIONS=374} [2024-06-28 02:09:09,946 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 219 predicate places. [2024-06-28 02:09:09,947 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 374 transitions, 5400 flow [2024-06-28 02:09:09,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:09,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:09,947 INFO 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 02:09:09,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:09:09,947 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:09,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:09,947 INFO L85 PathProgramCache]: Analyzing trace with hash 346535783, now seen corresponding path program 6 times [2024-06-28 02:09:09,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:09,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364684099] [2024-06-28 02:09:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:09,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364684099] [2024-06-28 02:09:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364684099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:12,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:09:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459258079] [2024-06-28 02:09:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:12,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:09:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:09:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:09:12,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:12,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 374 transitions, 5400 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:12,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:12,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:12,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:15,363 INFO L124 PetriNetUnfolderBase]: 7114/11171 cut-off events. [2024-06-28 02:09:15,363 INFO L125 PetriNetUnfolderBase]: For 286152/286152 co-relation queries the response was YES. [2024-06-28 02:09:15,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71828 conditions, 11171 events. 7114/11171 cut-off events. For 286152/286152 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 72859 event pairs, 1526 based on Foata normal form. 8/11176 useless extension candidates. Maximal degree in co-relation 71695. Up to 9674 conditions per place. [2024-06-28 02:09:15,504 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 375 selfloop transitions, 39 changer transitions 0/421 dead transitions. [2024-06-28 02:09:15,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 421 transitions, 6397 flow [2024-06-28 02:09:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:09:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:09:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:09:15,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-28 02:09:15,506 INFO L175 Difference]: Start difference. First operand has 269 places, 374 transitions, 5400 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:09:15,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 421 transitions, 6397 flow [2024-06-28 02:09:16,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 421 transitions, 6291 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:09:16,415 INFO L231 Difference]: Finished difference. Result has 271 places, 374 transitions, 5377 flow [2024-06-28 02:09:16,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5294, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5377, PETRI_PLACES=271, PETRI_TRANSITIONS=374} [2024-06-28 02:09:16,415 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 221 predicate places. [2024-06-28 02:09:16,415 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 374 transitions, 5377 flow [2024-06-28 02:09:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:16,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:16,416 INFO 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 02:09:16,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:09:16,416 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:16,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash 553609955, now seen corresponding path program 1 times [2024-06-28 02:09:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:16,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958944235] [2024-06-28 02:09:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:19,692 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 02:09:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958944235] [2024-06-28 02:09:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958944235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515158079] [2024-06-28 02:09:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:19,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:19,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:19,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 374 transitions, 5377 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:19,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:19,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:19,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:22,855 INFO L124 PetriNetUnfolderBase]: 7101/11145 cut-off events. [2024-06-28 02:09:22,855 INFO L125 PetriNetUnfolderBase]: For 270268/270268 co-relation queries the response was YES. [2024-06-28 02:09:22,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70954 conditions, 11145 events. 7101/11145 cut-off events. For 270268/270268 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 72601 event pairs, 1571 based on Foata normal form. 6/11148 useless extension candidates. Maximal degree in co-relation 70820. Up to 9721 conditions per place. [2024-06-28 02:09:22,989 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 383 selfloop transitions, 38 changer transitions 0/428 dead transitions. [2024-06-28 02:09:22,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 428 transitions, 6482 flow [2024-06-28 02:09:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 02:09:22,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975845410628019 [2024-06-28 02:09:22,991 INFO L175 Difference]: Start difference. First operand has 271 places, 374 transitions, 5377 flow. Second operand 9 states and 206 transitions. [2024-06-28 02:09:22,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 428 transitions, 6482 flow [2024-06-28 02:09:23,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 428 transitions, 6319 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:23,869 INFO L231 Difference]: Finished difference. Result has 273 places, 376 transitions, 5371 flow [2024-06-28 02:09:23,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5214, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5371, PETRI_PLACES=273, PETRI_TRANSITIONS=376} [2024-06-28 02:09:23,869 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 223 predicate places. [2024-06-28 02:09:23,870 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 376 transitions, 5371 flow [2024-06-28 02:09:23,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:23,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:23,870 INFO 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 02:09:23,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:09:23,870 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:23,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash 111937542, now seen corresponding path program 1 times [2024-06-28 02:09:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:23,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325210755] [2024-06-28 02:09:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:23,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325210755] [2024-06-28 02:09:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325210755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:23,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:23,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:09:23,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429794694] [2024-06-28 02:09:23,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:23,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:09:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:09:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:09:23,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-28 02:09:23,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 376 transitions, 5371 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:23,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:23,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-28 02:09:23,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:25,685 INFO L124 PetriNetUnfolderBase]: 4697/7776 cut-off events. [2024-06-28 02:09:25,685 INFO L125 PetriNetUnfolderBase]: For 252276/252829 co-relation queries the response was YES. [2024-06-28 02:09:25,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47846 conditions, 7776 events. 4697/7776 cut-off events. For 252276/252829 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 52923 event pairs, 722 based on Foata normal form. 514/7945 useless extension candidates. Maximal degree in co-relation 47713. Up to 3410 conditions per place. [2024-06-28 02:09:25,769 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 136 selfloop transitions, 116 changer transitions 0/347 dead transitions. [2024-06-28 02:09:25,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 347 transitions, 5451 flow [2024-06-28 02:09:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:09:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:09:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-28 02:09:25,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-28 02:09:25,769 INFO L175 Difference]: Start difference. First operand has 273 places, 376 transitions, 5371 flow. Second operand 4 states and 116 transitions. [2024-06-28 02:09:25,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 347 transitions, 5451 flow [2024-06-28 02:09:26,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 347 transitions, 4730 flow, removed 187 selfloop flow, removed 27 redundant places. [2024-06-28 02:09:26,357 INFO L231 Difference]: Finished difference. Result has 251 places, 309 transitions, 4282 flow [2024-06-28 02:09:26,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4282, PETRI_PLACES=251, PETRI_TRANSITIONS=309} [2024-06-28 02:09:26,357 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 201 predicate places. [2024-06-28 02:09:26,357 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 309 transitions, 4282 flow [2024-06-28 02:09:26,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:26,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:26,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:26,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:09:26,358 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:26,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1906744806, now seen corresponding path program 1 times [2024-06-28 02:09:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:26,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106154011] [2024-06-28 02:09:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:28,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106154011] [2024-06-28 02:09:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106154011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:28,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65470444] [2024-06-28 02:09:28,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:28,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:28,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 309 transitions, 4282 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:28,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:28,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:28,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:31,693 INFO L124 PetriNetUnfolderBase]: 6787/10713 cut-off events. [2024-06-28 02:09:31,694 INFO L125 PetriNetUnfolderBase]: For 276458/276458 co-relation queries the response was YES. [2024-06-28 02:09:31,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65758 conditions, 10713 events. 6787/10713 cut-off events. For 276458/276458 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 69038 event pairs, 2281 based on Foata normal form. 8/10716 useless extension candidates. Maximal degree in co-relation 65635. Up to 9126 conditions per place. [2024-06-28 02:09:31,874 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 338 selfloop transitions, 78 changer transitions 8/431 dead transitions. [2024-06-28 02:09:31,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 431 transitions, 6179 flow [2024-06-28 02:09:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:09:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:09:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 296 transitions. [2024-06-28 02:09:31,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49498327759197325 [2024-06-28 02:09:31,876 INFO L175 Difference]: Start difference. First operand has 251 places, 309 transitions, 4282 flow. Second operand 13 states and 296 transitions. [2024-06-28 02:09:31,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 431 transitions, 6179 flow [2024-06-28 02:09:33,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 431 transitions, 6141 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 02:09:33,087 INFO L231 Difference]: Finished difference. Result has 266 places, 344 transitions, 5077 flow [2024-06-28 02:09:33,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4262, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5077, PETRI_PLACES=266, PETRI_TRANSITIONS=344} [2024-06-28 02:09:33,088 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 216 predicate places. [2024-06-28 02:09:33,088 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 344 transitions, 5077 flow [2024-06-28 02:09:33,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:33,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:33,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:33,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:09:33,088 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:33,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash 95164330, now seen corresponding path program 2 times [2024-06-28 02:09:33,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:33,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967598033] [2024-06-28 02:09:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:33,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:36,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:36,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967598033] [2024-06-28 02:09:36,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967598033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:36,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:36,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:36,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349598954] [2024-06-28 02:09:36,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:36,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:36,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:36,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:36,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:36,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:36,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 344 transitions, 5077 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:36,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:36,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:36,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:39,153 INFO L124 PetriNetUnfolderBase]: 6344/9935 cut-off events. [2024-06-28 02:09:39,153 INFO L125 PetriNetUnfolderBase]: For 272775/272775 co-relation queries the response was YES. [2024-06-28 02:09:39,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61670 conditions, 9935 events. 6344/9935 cut-off events. For 272775/272775 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 62037 event pairs, 1990 based on Foata normal form. 8/9941 useless extension candidates. Maximal degree in co-relation 61541. Up to 7931 conditions per place. [2024-06-28 02:09:39,281 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 330 selfloop transitions, 87 changer transitions 0/424 dead transitions. [2024-06-28 02:09:39,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 424 transitions, 6572 flow [2024-06-28 02:09:39,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:09:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:09:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-06-28 02:09:39,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48616600790513836 [2024-06-28 02:09:39,282 INFO L175 Difference]: Start difference. First operand has 266 places, 344 transitions, 5077 flow. Second operand 11 states and 246 transitions. [2024-06-28 02:09:39,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 424 transitions, 6572 flow [2024-06-28 02:09:39,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 424 transitions, 6214 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-28 02:09:39,989 INFO L231 Difference]: Finished difference. Result has 271 places, 358 transitions, 5232 flow [2024-06-28 02:09:39,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5232, PETRI_PLACES=271, PETRI_TRANSITIONS=358} [2024-06-28 02:09:39,989 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 221 predicate places. [2024-06-28 02:09:39,989 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 358 transitions, 5232 flow [2024-06-28 02:09:39,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:39,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:39,990 INFO L208 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 02:09:39,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:09:39,990 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:39,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1200463492, now seen corresponding path program 3 times [2024-06-28 02:09:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585417967] [2024-06-28 02:09:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:43,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:43,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585417967] [2024-06-28 02:09:43,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585417967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:43,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:43,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175389008] [2024-06-28 02:09:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:43,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:43,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:43,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 358 transitions, 5232 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:43,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:43,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:43,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:46,549 INFO L124 PetriNetUnfolderBase]: 6816/10615 cut-off events. [2024-06-28 02:09:46,550 INFO L125 PetriNetUnfolderBase]: For 291018/291018 co-relation queries the response was YES. [2024-06-28 02:09:46,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66309 conditions, 10615 events. 6816/10615 cut-off events. For 291018/291018 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 66644 event pairs, 2440 based on Foata normal form. 16/10626 useless extension candidates. Maximal degree in co-relation 66179. Up to 9253 conditions per place. [2024-06-28 02:09:46,683 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 348 selfloop transitions, 88 changer transitions 0/443 dead transitions. [2024-06-28 02:09:46,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 443 transitions, 6889 flow [2024-06-28 02:09:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:09:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:09:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 253 transitions. [2024-06-28 02:09:46,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 02:09:46,685 INFO L175 Difference]: Start difference. First operand has 271 places, 358 transitions, 5232 flow. Second operand 12 states and 253 transitions. [2024-06-28 02:09:46,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 443 transitions, 6889 flow [2024-06-28 02:09:47,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 443 transitions, 6660 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-28 02:09:47,420 INFO L231 Difference]: Finished difference. Result has 278 places, 383 transitions, 5758 flow [2024-06-28 02:09:47,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5758, PETRI_PLACES=278, PETRI_TRANSITIONS=383} [2024-06-28 02:09:47,420 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 228 predicate places. [2024-06-28 02:09:47,421 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 383 transitions, 5758 flow [2024-06-28 02:09:47,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:47,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:47,421 INFO L208 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 02:09:47,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:09:47,421 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:47,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:47,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1347980836, now seen corresponding path program 1 times [2024-06-28 02:09:47,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:47,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862848345] [2024-06-28 02:09:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:50,553 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 02:09:50,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:50,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862848345] [2024-06-28 02:09:50,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862848345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:50,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:50,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647501259] [2024-06-28 02:09:50,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:50,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:50,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:50,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:50,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:50,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 383 transitions, 5758 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:50,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:50,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:50,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:53,848 INFO L124 PetriNetUnfolderBase]: 6832/10654 cut-off events. [2024-06-28 02:09:53,848 INFO L125 PetriNetUnfolderBase]: For 263228/263228 co-relation queries the response was YES. [2024-06-28 02:09:53,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66556 conditions, 10654 events. 6832/10654 cut-off events. For 263228/263228 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 67053 event pairs, 2589 based on Foata normal form. 2/10654 useless extension candidates. Maximal degree in co-relation 66423. Up to 9663 conditions per place. [2024-06-28 02:09:53,973 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 322 selfloop transitions, 105 changer transitions 0/434 dead transitions. [2024-06-28 02:09:53,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 434 transitions, 6989 flow [2024-06-28 02:09:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:09:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:09:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-06-28 02:09:53,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-28 02:09:53,974 INFO L175 Difference]: Start difference. First operand has 278 places, 383 transitions, 5758 flow. Second operand 11 states and 231 transitions. [2024-06-28 02:09:53,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 434 transitions, 6989 flow [2024-06-28 02:09:54,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 434 transitions, 6901 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 02:09:54,650 INFO L231 Difference]: Finished difference. Result has 285 places, 386 transitions, 5957 flow [2024-06-28 02:09:54,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5670, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5957, PETRI_PLACES=285, PETRI_TRANSITIONS=386} [2024-06-28 02:09:54,651 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 235 predicate places. [2024-06-28 02:09:54,651 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 386 transitions, 5957 flow [2024-06-28 02:09:54,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:54,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:54,651 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, 1] [2024-06-28 02:09:54,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:09:54,651 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:54,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash -251667832, now seen corresponding path program 4 times [2024-06-28 02:09:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261418281] [2024-06-28 02:09:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:54,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:57,952 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 02:09:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:57,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261418281] [2024-06-28 02:09:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261418281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:57,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:57,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:57,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289204911] [2024-06-28 02:09:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:57,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:57,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:57,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:58,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:09:58,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 386 transitions, 5957 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:58,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:58,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:09:58,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:01,388 INFO L124 PetriNetUnfolderBase]: 7062/10965 cut-off events. [2024-06-28 02:10:01,388 INFO L125 PetriNetUnfolderBase]: For 283043/283043 co-relation queries the response was YES. [2024-06-28 02:10:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68641 conditions, 10965 events. 7062/10965 cut-off events. For 283043/283043 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 68778 event pairs, 2504 based on Foata normal form. 8/10971 useless extension candidates. Maximal degree in co-relation 68506. Up to 9693 conditions per place. [2024-06-28 02:10:01,505 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 356 selfloop transitions, 88 changer transitions 0/451 dead transitions. [2024-06-28 02:10:01,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 451 transitions, 7284 flow [2024-06-28 02:10:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:10:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:10:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-06-28 02:10:01,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2024-06-28 02:10:01,507 INFO L175 Difference]: Start difference. First operand has 285 places, 386 transitions, 5957 flow. Second operand 12 states and 248 transitions. [2024-06-28 02:10:01,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 451 transitions, 7284 flow [2024-06-28 02:10:02,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 451 transitions, 7027 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 02:10:02,208 INFO L231 Difference]: Finished difference. Result has 292 places, 397 transitions, 6153 flow [2024-06-28 02:10:02,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5704, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6153, PETRI_PLACES=292, PETRI_TRANSITIONS=397} [2024-06-28 02:10:02,209 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 242 predicate places. [2024-06-28 02:10:02,209 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 397 transitions, 6153 flow [2024-06-28 02:10:02,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:02,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:02,209 INFO L208 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 02:10:02,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:10:02,209 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:02,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2063441310, now seen corresponding path program 1 times [2024-06-28 02:10:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:02,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325412116] [2024-06-28 02:10:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:05,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325412116] [2024-06-28 02:10:05,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325412116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:05,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:05,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:10:05,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485988080] [2024-06-28 02:10:05,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:05,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:10:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:10:05,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:10:05,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:10:05,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 397 transitions, 6153 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:05,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:05,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:10:05,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:08,758 INFO L124 PetriNetUnfolderBase]: 7143/11095 cut-off events. [2024-06-28 02:10:08,758 INFO L125 PetriNetUnfolderBase]: For 284176/284176 co-relation queries the response was YES. [2024-06-28 02:10:08,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70216 conditions, 11095 events. 7143/11095 cut-off events. For 284176/284176 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 69844 event pairs, 2721 based on Foata normal form. 2/11093 useless extension candidates. Maximal degree in co-relation 70077. Up to 10122 conditions per place. [2024-06-28 02:10:08,895 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 382 selfloop transitions, 59 changer transitions 0/448 dead transitions. [2024-06-28 02:10:08,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 448 transitions, 7467 flow [2024-06-28 02:10:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:10:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:10:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 02:10:08,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 02:10:08,896 INFO L175 Difference]: Start difference. First operand has 292 places, 397 transitions, 6153 flow. Second operand 8 states and 186 transitions. [2024-06-28 02:10:08,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 448 transitions, 7467 flow [2024-06-28 02:10:09,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 448 transitions, 7282 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 02:10:09,625 INFO L231 Difference]: Finished difference. Result has 294 places, 401 transitions, 6172 flow [2024-06-28 02:10:09,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5972, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6172, PETRI_PLACES=294, PETRI_TRANSITIONS=401} [2024-06-28 02:10:09,626 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 244 predicate places. [2024-06-28 02:10:09,626 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 401 transitions, 6172 flow [2024-06-28 02:10:09,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:09,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:09,626 INFO L208 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 02:10:09,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:10:09,626 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:09,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash 594992046, now seen corresponding path program 2 times [2024-06-28 02:10:09,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:09,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114094668] [2024-06-28 02:10:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:09,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:12,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:12,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114094668] [2024-06-28 02:10:12,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114094668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:12,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:12,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:10:12,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486511166] [2024-06-28 02:10:12,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:12,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:10:12,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:12,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:10:12,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:10:12,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:10:12,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 401 transitions, 6172 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:12,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:12,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:10:12,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:15,746 INFO L124 PetriNetUnfolderBase]: 7181/11164 cut-off events. [2024-06-28 02:10:15,746 INFO L125 PetriNetUnfolderBase]: For 279978/279978 co-relation queries the response was YES. [2024-06-28 02:10:15,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69680 conditions, 11164 events. 7181/11164 cut-off events. For 279978/279978 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 70413 event pairs, 2774 based on Foata normal form. 2/11162 useless extension candidates. Maximal degree in co-relation 69539. Up to 10326 conditions per place. [2024-06-28 02:10:15,922 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 376 selfloop transitions, 56 changer transitions 0/439 dead transitions. [2024-06-28 02:10:15,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 439 transitions, 7239 flow [2024-06-28 02:10:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:10:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:10:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-28 02:10:15,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-28 02:10:15,923 INFO L175 Difference]: Start difference. First operand has 294 places, 401 transitions, 6172 flow. Second operand 8 states and 175 transitions. [2024-06-28 02:10:15,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 439 transitions, 7239 flow [2024-06-28 02:10:17,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 439 transitions, 7124 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 02:10:17,077 INFO L231 Difference]: Finished difference. Result has 298 places, 403 transitions, 6218 flow [2024-06-28 02:10:17,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6071, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6218, PETRI_PLACES=298, PETRI_TRANSITIONS=403} [2024-06-28 02:10:17,078 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 248 predicate places. [2024-06-28 02:10:17,078 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 403 transitions, 6218 flow [2024-06-28 02:10:17,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:17,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:17,078 INFO L208 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 02:10:17,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:10:17,078 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:17,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash 589451044, now seen corresponding path program 2 times [2024-06-28 02:10:17,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:17,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201049476] [2024-06-28 02:10:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201049476] [2024-06-28 02:10:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201049476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:20,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:20,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:20,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863679379] [2024-06-28 02:10:20,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:20,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:20,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:20,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:10:20,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 403 transitions, 6218 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:20,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:20,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:10:20,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:24,281 INFO L124 PetriNetUnfolderBase]: 7241/11256 cut-off events. [2024-06-28 02:10:24,281 INFO L125 PetriNetUnfolderBase]: For 295151/295151 co-relation queries the response was YES. [2024-06-28 02:10:24,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70667 conditions, 11256 events. 7241/11256 cut-off events. For 295151/295151 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 71082 event pairs, 2653 based on Foata normal form. 2/11254 useless extension candidates. Maximal degree in co-relation 70524. Up to 9867 conditions per place. [2024-06-28 02:10:24,430 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 264 selfloop transitions, 190 changer transitions 0/461 dead transitions. [2024-06-28 02:10:24,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 461 transitions, 7929 flow [2024-06-28 02:10:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:10:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:10:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 251 transitions. [2024-06-28 02:10:24,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45471014492753625 [2024-06-28 02:10:24,432 INFO L175 Difference]: Start difference. First operand has 298 places, 403 transitions, 6218 flow. Second operand 12 states and 251 transitions. [2024-06-28 02:10:24,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 461 transitions, 7929 flow [2024-06-28 02:10:25,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 461 transitions, 7808 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:10:25,318 INFO L231 Difference]: Finished difference. Result has 304 places, 412 transitions, 6690 flow [2024-06-28 02:10:25,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6097, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6690, PETRI_PLACES=304, PETRI_TRANSITIONS=412} [2024-06-28 02:10:25,318 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 254 predicate places. [2024-06-28 02:10:25,319 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 412 transitions, 6690 flow [2024-06-28 02:10:25,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:25,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:25,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:10:25,319 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:25,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -528776580, now seen corresponding path program 3 times [2024-06-28 02:10:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:25,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827511713] [2024-06-28 02:10:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:28,804 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 02:10:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827511713] [2024-06-28 02:10:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827511713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:28,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:28,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:28,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819603854] [2024-06-28 02:10:28,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:28,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:28,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:28,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:28,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:10:28,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 412 transitions, 6690 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:28,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:28,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:10:28,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:32,098 INFO L124 PetriNetUnfolderBase]: 7279/11314 cut-off events. [2024-06-28 02:10:32,098 INFO L125 PetriNetUnfolderBase]: For 309199/309199 co-relation queries the response was YES. [2024-06-28 02:10:32,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71898 conditions, 11314 events. 7279/11314 cut-off events. For 309199/309199 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 71508 event pairs, 2654 based on Foata normal form. 2/11312 useless extension candidates. Maximal degree in co-relation 71754. Up to 9902 conditions per place. [2024-06-28 02:10:32,242 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 264 selfloop transitions, 190 changer transitions 0/461 dead transitions. [2024-06-28 02:10:32,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 461 transitions, 8328 flow [2024-06-28 02:10:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:10:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:10:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-06-28 02:10:32,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2024-06-28 02:10:32,243 INFO L175 Difference]: Start difference. First operand has 304 places, 412 transitions, 6690 flow. Second operand 11 states and 232 transitions. [2024-06-28 02:10:32,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 461 transitions, 8328 flow [2024-06-28 02:10:33,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 461 transitions, 8032 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-28 02:10:33,400 INFO L231 Difference]: Finished difference. Result has 309 places, 418 transitions, 6926 flow [2024-06-28 02:10:33,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6926, PETRI_PLACES=309, PETRI_TRANSITIONS=418} [2024-06-28 02:10:33,401 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 259 predicate places. [2024-06-28 02:10:33,401 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 418 transitions, 6926 flow [2024-06-28 02:10:33,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:33,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:33,401 INFO L208 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 02:10:33,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:10:33,401 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:33,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2060589992, now seen corresponding path program 4 times [2024-06-28 02:10:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:33,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774084064] [2024-06-28 02:10:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:36,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:36,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774084064] [2024-06-28 02:10:36,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774084064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:36,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:36,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:36,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408151835] [2024-06-28 02:10:36,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:36,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:36,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:10:36,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 418 transitions, 6926 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:36,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:36,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:10:36,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:40,659 INFO L124 PetriNetUnfolderBase]: 7273/11303 cut-off events. [2024-06-28 02:10:40,659 INFO L125 PetriNetUnfolderBase]: For 308083/308083 co-relation queries the response was YES. [2024-06-28 02:10:40,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71950 conditions, 11303 events. 7273/11303 cut-off events. For 308083/308083 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 71315 event pairs, 2657 based on Foata normal form. 2/11301 useless extension candidates. Maximal degree in co-relation 71804. Up to 9897 conditions per place. [2024-06-28 02:10:40,795 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 267 selfloop transitions, 191 changer transitions 0/465 dead transitions. [2024-06-28 02:10:40,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 465 transitions, 8310 flow [2024-06-28 02:10:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:10:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:10:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 264 transitions. [2024-06-28 02:10:40,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414715719063545 [2024-06-28 02:10:40,796 INFO L175 Difference]: Start difference. First operand has 309 places, 418 transitions, 6926 flow. Second operand 13 states and 264 transitions. [2024-06-28 02:10:40,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 465 transitions, 8310 flow [2024-06-28 02:10:41,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 465 transitions, 7963 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:10:41,803 INFO L231 Difference]: Finished difference. Result has 315 places, 418 transitions, 6967 flow [2024-06-28 02:10:41,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6967, PETRI_PLACES=315, PETRI_TRANSITIONS=418} [2024-06-28 02:10:41,803 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 265 predicate places. [2024-06-28 02:10:41,803 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 418 transitions, 6967 flow [2024-06-28 02:10:41,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:41,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:41,804 INFO L208 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 02:10:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:10:41,804 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:41,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash 492446856, now seen corresponding path program 3 times [2024-06-28 02:10:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996130728] [2024-06-28 02:10:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:41,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:44,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996130728] [2024-06-28 02:10:44,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996130728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:44,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:44,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:10:44,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686431905] [2024-06-28 02:10:44,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:44,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:10:44,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:44,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:10:44,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:10:44,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:10:44,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 418 transitions, 6967 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:44,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:44,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:10:44,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:47,955 INFO L124 PetriNetUnfolderBase]: 7447/11585 cut-off events. [2024-06-28 02:10:47,955 INFO L125 PetriNetUnfolderBase]: For 316684/316684 co-relation queries the response was YES. [2024-06-28 02:10:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73572 conditions, 11585 events. 7447/11585 cut-off events. For 316684/316684 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 73431 event pairs, 2733 based on Foata normal form. 2/11585 useless extension candidates. Maximal degree in co-relation 73425. Up to 10598 conditions per place. [2024-06-28 02:10:48,155 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 402 selfloop transitions, 48 changer transitions 0/457 dead transitions. [2024-06-28 02:10:48,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 457 transitions, 8104 flow [2024-06-28 02:10:48,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:10:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:10:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-28 02:10:48,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-06-28 02:10:48,156 INFO L175 Difference]: Start difference. First operand has 315 places, 418 transitions, 6967 flow. Second operand 8 states and 174 transitions. [2024-06-28 02:10:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 457 transitions, 8104 flow [2024-06-28 02:10:49,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 457 transitions, 7704 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:10:49,341 INFO L231 Difference]: Finished difference. Result has 311 places, 421 transitions, 6718 flow [2024-06-28 02:10:49,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6567, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6718, PETRI_PLACES=311, PETRI_TRANSITIONS=421} [2024-06-28 02:10:49,341 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 261 predicate places. [2024-06-28 02:10:49,341 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 421 transitions, 6718 flow [2024-06-28 02:10:49,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:49,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:49,342 INFO L208 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 02:10:49,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:10:49,342 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:49,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1779649458, now seen corresponding path program 5 times [2024-06-28 02:10:49,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:49,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971724630] [2024-06-28 02:10:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:49,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:53,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:53,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971724630] [2024-06-28 02:10:53,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971724630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:53,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:53,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432626146] [2024-06-28 02:10:53,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:53,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:53,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:10:53,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 421 transitions, 6718 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:53,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:53,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:10:53,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:56,598 INFO L124 PetriNetUnfolderBase]: 7775/12091 cut-off events. [2024-06-28 02:10:56,598 INFO L125 PetriNetUnfolderBase]: For 341228/341237 co-relation queries the response was YES. [2024-06-28 02:10:56,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78648 conditions, 12091 events. 7775/12091 cut-off events. For 341228/341237 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 76904 event pairs, 2768 based on Foata normal form. 4/12088 useless extension candidates. Maximal degree in co-relation 78500. Up to 10965 conditions per place. [2024-06-28 02:10:56,805 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 409 selfloop transitions, 126 changer transitions 0/542 dead transitions. [2024-06-28 02:10:56,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 542 transitions, 10050 flow [2024-06-28 02:10:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:10:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:10:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-28 02:10:56,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329710144927536 [2024-06-28 02:10:56,807 INFO L175 Difference]: Start difference. First operand has 311 places, 421 transitions, 6718 flow. Second operand 12 states and 239 transitions. [2024-06-28 02:10:56,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 542 transitions, 10050 flow [2024-06-28 02:10:58,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 542 transitions, 9895 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:10:58,228 INFO L231 Difference]: Finished difference. Result has 322 places, 494 transitions, 8730 flow [2024-06-28 02:10:58,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6616, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8730, PETRI_PLACES=322, PETRI_TRANSITIONS=494} [2024-06-28 02:10:58,228 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 272 predicate places. [2024-06-28 02:10:58,229 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 494 transitions, 8730 flow [2024-06-28 02:10:58,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:58,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:58,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:58,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:10:58,229 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:58,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash 879663906, now seen corresponding path program 6 times [2024-06-28 02:10:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:58,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415521222] [2024-06-28 02:10:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:01,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:01,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415521222] [2024-06-28 02:11:01,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415521222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:01,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:01,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:11:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375148135] [2024-06-28 02:11:01,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:01,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:11:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:11:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:11:01,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:11:01,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 494 transitions, 8730 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:01,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:01,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:11:01,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:05,384 INFO L124 PetriNetUnfolderBase]: 8119/12627 cut-off events. [2024-06-28 02:11:05,384 INFO L125 PetriNetUnfolderBase]: For 377630/377630 co-relation queries the response was YES. [2024-06-28 02:11:05,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85403 conditions, 12627 events. 8119/12627 cut-off events. For 377630/377630 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 80903 event pairs, 2762 based on Foata normal form. 4/12629 useless extension candidates. Maximal degree in co-relation 85249. Up to 11182 conditions per place. [2024-06-28 02:11:05,561 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 404 selfloop transitions, 243 changer transitions 0/654 dead transitions. [2024-06-28 02:11:05,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 654 transitions, 13091 flow [2024-06-28 02:11:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:11:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:11:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 280 transitions. [2024-06-28 02:11:05,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-06-28 02:11:05,563 INFO L175 Difference]: Start difference. First operand has 322 places, 494 transitions, 8730 flow. Second operand 14 states and 280 transitions. [2024-06-28 02:11:05,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 654 transitions, 13091 flow [2024-06-28 02:11:07,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 654 transitions, 12938 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 02:11:07,289 INFO L231 Difference]: Finished difference. Result has 338 places, 601 transitions, 11958 flow [2024-06-28 02:11:07,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8633, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11958, PETRI_PLACES=338, PETRI_TRANSITIONS=601} [2024-06-28 02:11:07,290 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 288 predicate places. [2024-06-28 02:11:07,290 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 601 transitions, 11958 flow [2024-06-28 02:11:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:07,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:07,290 INFO L208 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 02:11:07,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:11:07,290 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:07,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash -560500296, now seen corresponding path program 7 times [2024-06-28 02:11:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:07,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482500883] [2024-06-28 02:11:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:07,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:09,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:09,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482500883] [2024-06-28 02:11:09,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482500883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:09,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:09,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501698124] [2024-06-28 02:11:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:09,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:09,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:11:09,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 601 transitions, 11958 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:09,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:09,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:11:09,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:13,976 INFO L124 PetriNetUnfolderBase]: 8135/12652 cut-off events. [2024-06-28 02:11:13,976 INFO L125 PetriNetUnfolderBase]: For 387825/387825 co-relation queries the response was YES. [2024-06-28 02:11:14,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88182 conditions, 12652 events. 8135/12652 cut-off events. For 387825/387825 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 81081 event pairs, 2756 based on Foata normal form. 2/12652 useless extension candidates. Maximal degree in co-relation 88020. Up to 11197 conditions per place. [2024-06-28 02:11:14,186 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 401 selfloop transitions, 247 changer transitions 0/655 dead transitions. [2024-06-28 02:11:14,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 655 transitions, 13775 flow [2024-06-28 02:11:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:11:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:11:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 264 transitions. [2024-06-28 02:11:14,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414715719063545 [2024-06-28 02:11:14,187 INFO L175 Difference]: Start difference. First operand has 338 places, 601 transitions, 11958 flow. Second operand 13 states and 264 transitions. [2024-06-28 02:11:14,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 655 transitions, 13775 flow [2024-06-28 02:11:15,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 655 transitions, 13718 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:15,984 INFO L231 Difference]: Finished difference. Result has 350 places, 605 transitions, 12510 flow [2024-06-28 02:11:15,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11901, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12510, PETRI_PLACES=350, PETRI_TRANSITIONS=605} [2024-06-28 02:11:15,985 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 300 predicate places. [2024-06-28 02:11:15,985 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 605 transitions, 12510 flow [2024-06-28 02:11:15,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:15,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:15,985 INFO L208 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 02:11:15,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:11:15,986 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:15,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash 560540934, now seen corresponding path program 8 times [2024-06-28 02:11:15,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:15,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550587573] [2024-06-28 02:11:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:15,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:18,641 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 02:11:18,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:18,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550587573] [2024-06-28 02:11:18,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550587573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:18,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:18,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645146583] [2024-06-28 02:11:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:18,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:18,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:18,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:18,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:18,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:11:18,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 605 transitions, 12510 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:18,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:18,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:11:18,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:22,800 INFO L124 PetriNetUnfolderBase]: 8123/12636 cut-off events. [2024-06-28 02:11:22,800 INFO L125 PetriNetUnfolderBase]: For 393106/393106 co-relation queries the response was YES. [2024-06-28 02:11:22,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88696 conditions, 12636 events. 8123/12636 cut-off events. For 393106/393106 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 81009 event pairs, 2754 based on Foata normal form. 4/12638 useless extension candidates. Maximal degree in co-relation 88531. Up to 11187 conditions per place. [2024-06-28 02:11:23,071 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 402 selfloop transitions, 245 changer transitions 0/654 dead transitions. [2024-06-28 02:11:23,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 654 transitions, 14094 flow [2024-06-28 02:11:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:11:23,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:11:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 263 transitions. [2024-06-28 02:11:23,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397993311036789 [2024-06-28 02:11:23,072 INFO L175 Difference]: Start difference. First operand has 350 places, 605 transitions, 12510 flow. Second operand 13 states and 263 transitions. [2024-06-28 02:11:23,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 654 transitions, 14094 flow [2024-06-28 02:11:25,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 654 transitions, 13528 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-28 02:11:25,384 INFO L231 Difference]: Finished difference. Result has 352 places, 606 transitions, 12524 flow [2024-06-28 02:11:25,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11944, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12524, PETRI_PLACES=352, PETRI_TRANSITIONS=606} [2024-06-28 02:11:25,385 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 302 predicate places. [2024-06-28 02:11:25,385 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 606 transitions, 12524 flow [2024-06-28 02:11:25,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:25,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:25,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:25,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:11:25,385 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:25,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash -241417186, now seen corresponding path program 9 times [2024-06-28 02:11:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:25,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867352444] [2024-06-28 02:11:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:25,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:28,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:28,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867352444] [2024-06-28 02:11:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867352444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:28,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:28,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140626386] [2024-06-28 02:11:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:28,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:28,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:28,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:11:28,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 606 transitions, 12524 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:28,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:28,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:11:28,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:32,669 INFO L124 PetriNetUnfolderBase]: 8117/12634 cut-off events. [2024-06-28 02:11:32,669 INFO L125 PetriNetUnfolderBase]: For 386310/386310 co-relation queries the response was YES. [2024-06-28 02:11:32,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88566 conditions, 12634 events. 8117/12634 cut-off events. For 386310/386310 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 81088 event pairs, 2764 based on Foata normal form. 2/12634 useless extension candidates. Maximal degree in co-relation 88400. Up to 11041 conditions per place. [2024-06-28 02:11:32,860 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 371 selfloop transitions, 270 changer transitions 0/648 dead transitions. [2024-06-28 02:11:32,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 648 transitions, 14179 flow [2024-06-28 02:11:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:11:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:11:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 240 transitions. [2024-06-28 02:11:32,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-06-28 02:11:32,862 INFO L175 Difference]: Start difference. First operand has 352 places, 606 transitions, 12524 flow. Second operand 12 states and 240 transitions. [2024-06-28 02:11:32,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 648 transitions, 14179 flow [2024-06-28 02:11:34,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 648 transitions, 13787 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:11:34,554 INFO L231 Difference]: Finished difference. Result has 356 places, 606 transitions, 12693 flow [2024-06-28 02:11:34,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12140, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12693, PETRI_PLACES=356, PETRI_TRANSITIONS=606} [2024-06-28 02:11:34,555 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 306 predicate places. [2024-06-28 02:11:34,555 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 606 transitions, 12693 flow [2024-06-28 02:11:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:34,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:34,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:11:34,555 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:34,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1779659688, now seen corresponding path program 10 times [2024-06-28 02:11:34,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:34,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118218846] [2024-06-28 02:11:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:37,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:37,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118218846] [2024-06-28 02:11:37,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118218846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:37,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:37,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:37,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634954816] [2024-06-28 02:11:37,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:37,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:37,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:37,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:37,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:37,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:11:37,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 606 transitions, 12693 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:37,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:37,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:11:37,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:41,763 INFO L124 PetriNetUnfolderBase]: 8111/12629 cut-off events. [2024-06-28 02:11:41,763 INFO L125 PetriNetUnfolderBase]: For 388471/388471 co-relation queries the response was YES. [2024-06-28 02:11:41,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88688 conditions, 12629 events. 8111/12629 cut-off events. For 388471/388471 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 81056 event pairs, 2754 based on Foata normal form. 2/12629 useless extension candidates. Maximal degree in co-relation 88521. Up to 11036 conditions per place. [2024-06-28 02:11:42,267 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 369 selfloop transitions, 269 changer transitions 0/645 dead transitions. [2024-06-28 02:11:42,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 645 transitions, 14164 flow [2024-06-28 02:11:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:11:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:11:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-28 02:11:42,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2024-06-28 02:11:42,268 INFO L175 Difference]: Start difference. First operand has 356 places, 606 transitions, 12693 flow. Second operand 11 states and 223 transitions. [2024-06-28 02:11:42,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 645 transitions, 14164 flow [2024-06-28 02:11:43,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 645 transitions, 13636 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:11:43,678 INFO L231 Difference]: Finished difference. Result has 358 places, 606 transitions, 12717 flow [2024-06-28 02:11:43,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12165, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12717, PETRI_PLACES=358, PETRI_TRANSITIONS=606} [2024-06-28 02:11:43,678 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 308 predicate places. [2024-06-28 02:11:43,678 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 606 transitions, 12717 flow [2024-06-28 02:11:43,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:43,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:43,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:43,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:11:43,679 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:43,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 945117738, now seen corresponding path program 5 times [2024-06-28 02:11:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:43,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935852443] [2024-06-28 02:11:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:43,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935852443] [2024-06-28 02:11:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935852443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:46,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894750981] [2024-06-28 02:11:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:46,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:11:46,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 606 transitions, 12717 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:46,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:46,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:11:46,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:50,625 INFO L124 PetriNetUnfolderBase]: 8093/12561 cut-off events. [2024-06-28 02:11:50,626 INFO L125 PetriNetUnfolderBase]: For 388509/388515 co-relation queries the response was YES. [2024-06-28 02:11:50,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87872 conditions, 12561 events. 8093/12561 cut-off events. For 388509/388515 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 80228 event pairs, 2250 based on Foata normal form. 14/12570 useless extension candidates. Maximal degree in co-relation 87704. Up to 9476 conditions per place. [2024-06-28 02:11:50,839 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 432 selfloop transitions, 226 changer transitions 0/665 dead transitions. [2024-06-28 02:11:50,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 665 transitions, 14345 flow [2024-06-28 02:11:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:11:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:11:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-28 02:11:50,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 02:11:50,841 INFO L175 Difference]: Start difference. First operand has 358 places, 606 transitions, 12717 flow. Second operand 10 states and 225 transitions. [2024-06-28 02:11:50,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 665 transitions, 14345 flow [2024-06-28 02:11:52,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 665 transitions, 13758 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 02:11:52,584 INFO L231 Difference]: Finished difference. Result has 358 places, 609 transitions, 12773 flow [2024-06-28 02:11:52,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12138, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12773, PETRI_PLACES=358, PETRI_TRANSITIONS=609} [2024-06-28 02:11:52,585 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 308 predicate places. [2024-06-28 02:11:52,585 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 609 transitions, 12773 flow [2024-06-28 02:11:52,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:52,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:52,585 INFO L208 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 02:11:52,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:11:52,585 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:52,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2121332592, now seen corresponding path program 4 times [2024-06-28 02:11:52,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:52,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024257909] [2024-06-28 02:11:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:52,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:55,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:55,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024257909] [2024-06-28 02:11:55,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024257909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:55,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:55,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:11:55,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049102780] [2024-06-28 02:11:55,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:55,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:11:55,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:55,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:11:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:11:55,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:11:55,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 609 transitions, 12773 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:55,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:55,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:11:55,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:59,145 INFO L124 PetriNetUnfolderBase]: 8174/12728 cut-off events. [2024-06-28 02:11:59,145 INFO L125 PetriNetUnfolderBase]: For 381663/381681 co-relation queries the response was YES. [2024-06-28 02:11:59,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90493 conditions, 12728 events. 8174/12728 cut-off events. For 381663/381681 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 82025 event pairs, 3108 based on Foata normal form. 14/12735 useless extension candidates. Maximal degree in co-relation 90324. Up to 11598 conditions per place. [2024-06-28 02:11:59,364 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 578 selfloop transitions, 71 changer transitions 0/656 dead transitions. [2024-06-28 02:11:59,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 656 transitions, 14537 flow [2024-06-28 02:11:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 02:11:59,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 02:11:59,365 INFO L175 Difference]: Start difference. First operand has 358 places, 609 transitions, 12773 flow. Second operand 8 states and 182 transitions. [2024-06-28 02:11:59,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 656 transitions, 14537 flow [2024-06-28 02:12:01,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 656 transitions, 14186 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:01,392 INFO L231 Difference]: Finished difference. Result has 360 places, 613 transitions, 12657 flow [2024-06-28 02:12:01,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12426, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12657, PETRI_PLACES=360, PETRI_TRANSITIONS=613} [2024-06-28 02:12:01,393 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 310 predicate places. [2024-06-28 02:12:01,393 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 613 transitions, 12657 flow [2024-06-28 02:12:01,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:01,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:01,393 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 02:12:01,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:12:01,393 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:01,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash -582720446, now seen corresponding path program 5 times [2024-06-28 02:12:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932778564] [2024-06-28 02:12:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932778564] [2024-06-28 02:12:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932778564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:04,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695507396] [2024-06-28 02:12:04,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:04,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:04,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:04,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:04,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:04,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:12:04,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 613 transitions, 12657 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:04,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:04,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:12:04,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:08,803 INFO L124 PetriNetUnfolderBase]: 8212/12791 cut-off events. [2024-06-28 02:12:08,803 INFO L125 PetriNetUnfolderBase]: For 374866/374884 co-relation queries the response was YES. [2024-06-28 02:12:08,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89808 conditions, 12791 events. 8212/12791 cut-off events. For 374866/374884 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 82492 event pairs, 3145 based on Foata normal form. 14/12798 useless extension candidates. Maximal degree in co-relation 89638. Up to 11745 conditions per place. [2024-06-28 02:12:09,049 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 571 selfloop transitions, 69 changer transitions 0/647 dead transitions. [2024-06-28 02:12:09,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 647 transitions, 14152 flow [2024-06-28 02:12:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 02:12:09,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46467391304347827 [2024-06-28 02:12:09,051 INFO L175 Difference]: Start difference. First operand has 360 places, 613 transitions, 12657 flow. Second operand 8 states and 171 transitions. [2024-06-28 02:12:09,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 647 transitions, 14152 flow [2024-06-28 02:12:10,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 647 transitions, 13998 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:10,954 INFO L231 Difference]: Finished difference. Result has 364 places, 615 transitions, 12694 flow [2024-06-28 02:12:10,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12521, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12694, PETRI_PLACES=364, PETRI_TRANSITIONS=615} [2024-06-28 02:12:10,955 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 314 predicate places. [2024-06-28 02:12:10,955 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 615 transitions, 12694 flow [2024-06-28 02:12:10,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:10,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:10,956 INFO L208 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 02:12:10,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:12:10,956 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:10,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:10,956 INFO L85 PathProgramCache]: Analyzing trace with hash 8690220, now seen corresponding path program 11 times [2024-06-28 02:12:10,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889509309] [2024-06-28 02:12:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:10,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:14,808 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 02:12:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889509309] [2024-06-28 02:12:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889509309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:14,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:14,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:14,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142270769] [2024-06-28 02:12:14,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:14,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:14,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:14,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:14,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:12:14,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 615 transitions, 12694 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:14,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:14,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:12:14,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:18,971 INFO L124 PetriNetUnfolderBase]: 8228/12808 cut-off events. [2024-06-28 02:12:18,971 INFO L125 PetriNetUnfolderBase]: For 374716/374719 co-relation queries the response was YES. [2024-06-28 02:12:19,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89806 conditions, 12808 events. 8228/12808 cut-off events. For 374716/374719 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 82331 event pairs, 2863 based on Foata normal form. 2/12796 useless extension candidates. Maximal degree in co-relation 89634. Up to 11432 conditions per place. [2024-06-28 02:12:19,241 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 471 selfloop transitions, 180 changer transitions 0/658 dead transitions. [2024-06-28 02:12:19,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 658 transitions, 14399 flow [2024-06-28 02:12:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:12:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:12:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-28 02:12:19,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44466403162055335 [2024-06-28 02:12:19,242 INFO L175 Difference]: Start difference. First operand has 364 places, 615 transitions, 12694 flow. Second operand 11 states and 225 transitions. [2024-06-28 02:12:19,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 658 transitions, 14399 flow [2024-06-28 02:12:21,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 658 transitions, 14252 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:21,540 INFO L231 Difference]: Finished difference. Result has 369 places, 618 transitions, 12968 flow [2024-06-28 02:12:21,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12547, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12968, PETRI_PLACES=369, PETRI_TRANSITIONS=618} [2024-06-28 02:12:21,541 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 319 predicate places. [2024-06-28 02:12:21,541 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 618 transitions, 12968 flow [2024-06-28 02:12:21,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:21,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:21,541 INFO L208 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 02:12:21,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:12:21,541 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:21,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash 17022090, now seen corresponding path program 12 times [2024-06-28 02:12:21,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:21,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677188844] [2024-06-28 02:12:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:21,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:24,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677188844] [2024-06-28 02:12:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677188844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:24,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:24,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142584684] [2024-06-28 02:12:24,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:24,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:24,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:24,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:24,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:12:24,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 618 transitions, 12968 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:24,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:24,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:12:24,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:29,481 INFO L124 PetriNetUnfolderBase]: 8266/12878 cut-off events. [2024-06-28 02:12:29,482 INFO L125 PetriNetUnfolderBase]: For 389206/389209 co-relation queries the response was YES. [2024-06-28 02:12:29,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90759 conditions, 12878 events. 8266/12878 cut-off events. For 389206/389209 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 82862 event pairs, 2869 based on Foata normal form. 2/12866 useless extension candidates. Maximal degree in co-relation 90586. Up to 11467 conditions per place. [2024-06-28 02:12:29,692 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 476 selfloop transitions, 182 changer transitions 0/665 dead transitions. [2024-06-28 02:12:29,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 665 transitions, 14924 flow [2024-06-28 02:12:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:12:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:12:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2024-06-28 02:12:29,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384057971014493 [2024-06-28 02:12:29,693 INFO L175 Difference]: Start difference. First operand has 369 places, 618 transitions, 12968 flow. Second operand 12 states and 242 transitions. [2024-06-28 02:12:29,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 665 transitions, 14924 flow [2024-06-28 02:12:31,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 665 transitions, 14358 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 02:12:31,622 INFO L231 Difference]: Finished difference. Result has 372 places, 624 transitions, 12894 flow [2024-06-28 02:12:31,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12442, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12894, PETRI_PLACES=372, PETRI_TRANSITIONS=624} [2024-06-28 02:12:31,623 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 322 predicate places. [2024-06-28 02:12:31,623 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 624 transitions, 12894 flow [2024-06-28 02:12:31,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:31,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:31,623 INFO L208 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 02:12:31,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:12:31,623 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:31,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 905136272, now seen corresponding path program 6 times [2024-06-28 02:12:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354431221] [2024-06-28 02:12:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354431221] [2024-06-28 02:12:34,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354431221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:34,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:34,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050663335] [2024-06-28 02:12:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:34,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:34,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:34,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:12:34,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 624 transitions, 12894 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:34,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:34,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:12:34,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:38,892 INFO L124 PetriNetUnfolderBase]: 8304/12916 cut-off events. [2024-06-28 02:12:38,893 INFO L125 PetriNetUnfolderBase]: For 395259/395277 co-relation queries the response was YES. [2024-06-28 02:12:39,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91024 conditions, 12916 events. 8304/12916 cut-off events. For 395259/395277 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 83282 event pairs, 2693 based on Foata normal form. 14/12923 useless extension candidates. Maximal degree in co-relation 90850. Up to 11251 conditions per place. [2024-06-28 02:12:39,104 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 577 selfloop transitions, 95 changer transitions 0/679 dead transitions. [2024-06-28 02:12:39,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 679 transitions, 14971 flow [2024-06-28 02:12:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:12:39,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 02:12:39,105 INFO L175 Difference]: Start difference. First operand has 372 places, 624 transitions, 12894 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:12:39,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 679 transitions, 14971 flow [2024-06-28 02:12:40,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 679 transitions, 14606 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:12:40,765 INFO L231 Difference]: Finished difference. Result has 373 places, 630 transitions, 12919 flow [2024-06-28 02:12:40,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12529, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12919, PETRI_PLACES=373, PETRI_TRANSITIONS=630} [2024-06-28 02:12:40,765 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 323 predicate places. [2024-06-28 02:12:40,766 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 630 transitions, 12919 flow [2024-06-28 02:12:40,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:40,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:40,766 INFO L208 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 02:12:40,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:12:40,766 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:40,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 915611792, now seen corresponding path program 7 times [2024-06-28 02:12:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:40,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349905446] [2024-06-28 02:12:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:40,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:43,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349905446] [2024-06-28 02:12:43,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349905446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:43,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:43,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:43,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959004671] [2024-06-28 02:12:43,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:43,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:43,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:43,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:12:43,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 630 transitions, 12919 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:43,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:43,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:12:43,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:47,864 INFO L124 PetriNetUnfolderBase]: 8350/12972 cut-off events. [2024-06-28 02:12:47,864 INFO L125 PetriNetUnfolderBase]: For 405959/405977 co-relation queries the response was YES. [2024-06-28 02:12:47,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92514 conditions, 12972 events. 8350/12972 cut-off events. For 405959/405977 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 83515 event pairs, 2674 based on Foata normal form. 14/12979 useless extension candidates. Maximal degree in co-relation 92338. Up to 11287 conditions per place. [2024-06-28 02:12:48,057 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 572 selfloop transitions, 99 changer transitions 0/678 dead transitions. [2024-06-28 02:12:48,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 678 transitions, 14786 flow [2024-06-28 02:12:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:12:48,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:12:48,059 INFO L175 Difference]: Start difference. First operand has 373 places, 630 transitions, 12919 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:12:48,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 678 transitions, 14786 flow [2024-06-28 02:12:49,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 678 transitions, 14592 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:49,951 INFO L231 Difference]: Finished difference. Result has 379 places, 634 transitions, 13059 flow [2024-06-28 02:12:49,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12763, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13059, PETRI_PLACES=379, PETRI_TRANSITIONS=634} [2024-06-28 02:12:49,951 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 329 predicate places. [2024-06-28 02:12:49,951 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 634 transitions, 13059 flow [2024-06-28 02:12:49,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:49,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:49,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:49,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:12:49,952 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:49,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1831588302, now seen corresponding path program 8 times [2024-06-28 02:12:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:49,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600154507] [2024-06-28 02:12:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat