./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe018_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe018_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_power.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe018_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:00:34,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:00:34,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:00:34,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:00:34,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:00:34,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:00:34,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:00:34,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:00:34,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:00:34,176 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:00:34,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:00:34,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:00:34,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:00:34,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:00:34,179 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:00:34,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:00:34,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:00:34,179 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:00:34,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:00:34,180 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:00:34,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:00:34,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:00:34,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:00:34,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:00:34,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:00:34,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:00:34,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:00:34,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:00:34,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:00:34,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:00:34,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:00:34,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:00:34,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:00:34,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:00:34,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:00:34,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:00:34,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:00:34,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:00:34,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:00:34,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:00:34,184 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:00:34,185 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:00:34,185 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:00:34,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:00:34,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:00:34,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:00:34,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:00:34,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:00:34,398 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:00:34,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_power.opt.i [2024-06-27 19:00:35,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:00:35,677 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:00:35,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_power.opt.i [2024-06-27 19:00:35,703 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e053ff51/dceb97aee99e4c63bffeb02a4808edfc/FLAG73b601b3a [2024-06-27 19:00:35,716 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e053ff51/dceb97aee99e4c63bffeb02a4808edfc [2024-06-27 19:00:35,718 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:00:35,718 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:00:35,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe018_power.opt.yml/witness.yml [2024-06-27 19:00:35,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:00:35,885 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:00:35,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:00:35,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:00:35,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:00:35,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:00:35" (1/2) ... [2024-06-27 19:00:35,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f683f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:00:35, skipping insertion in model container [2024-06-27 19:00:35,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:00:35" (1/2) ... [2024-06-27 19:00:35,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67216666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:00:35, skipping insertion in model container [2024-06-27 19:00:35,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:00:35" (2/2) ... [2024-06-27 19:00:35,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f683f56 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:35, skipping insertion in model container [2024-06-27 19:00:35,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:00:35" (2/2) ... [2024-06-27 19:00:35,894 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:00:35,991 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:00:35,993 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 19:00:35,993 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 19:00:35,993 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] ((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 19:00:35,993 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:00:35,994 INFO L106 edCorrectnessWitness]: ghost_update [L860-L860] multithreaded = 1; [2024-06-27 19:00:36,033 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:00:36,144 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.opt.i[994,1007] [2024-06-27 19:00:36,327 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:00:36,354 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:00:36,379 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.opt.i[994,1007] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:00:36,451 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:00:36,480 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:00:36,481 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36 WrapperNode [2024-06-27 19:00:36,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:00:36,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:00:36,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:00:36,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:00:36,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,525 INFO L138 Inliner]: procedures = 175, calls = 75, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 211 [2024-06-27 19:00:36,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:00:36,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:00:36,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:00:36,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:00:36,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,538 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,551 INFO L175 MemorySlicer]: Split 36 memory accesses to 2 slices as follows [2, 34]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-27 19:00:36,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:00:36,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:00:36,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:00:36,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:00:36,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (1/1) ... [2024-06-27 19:00:36,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:00:36,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:00:36,593 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) [2024-06-27 19:00:36,616 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 [2024-06-27 19:00:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 19:00:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 19:00:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 19:00:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 19:00:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:00:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:00:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:00:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:00:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:00:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:00:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:00:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:00:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:00:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 19:00:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:00:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:00:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:00:36,634 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:00:36,783 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:00:36,784 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:00:37,200 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:00:37,201 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:00:37,467 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:00:37,467 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:00:37,468 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:00:37 BoogieIcfgContainer [2024-06-27 19:00:37,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:00:37,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:00:37,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:00:37,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:00:37,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:00:35" (1/4) ... [2024-06-27 19:00:37,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd7a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:00:37, skipping insertion in model container [2024-06-27 19:00:37,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:00:35" (2/4) ... [2024-06-27 19:00:37,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd7a08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:00:37, skipping insertion in model container [2024-06-27 19:00:37,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:00:36" (3/4) ... [2024-06-27 19:00:37,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd7a08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:00:37, skipping insertion in model container [2024-06-27 19:00:37,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:00:37" (4/4) ... [2024-06-27 19:00:37,475 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_power.opt.i [2024-06-27 19:00:37,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:00:37,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:00:37,489 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:00:37,554 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:00:37,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 19:00:37,650 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 19:00:37,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:00:37,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 19:00:37,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 19:00:37,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 19:00:37,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:00:37,742 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;@5256ef58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:00:37,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:00:37,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:00:37,747 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:00:37,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:00:37,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:37,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:00:37,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:37,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash 797765291, now seen corresponding path program 1 times [2024-06-27 19:00:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:37,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441295778] [2024-06-27 19:00:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:37,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:39,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:39,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441295778] [2024-06-27 19:00:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441295778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:39,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:39,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:00:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622718583] [2024-06-27 19:00:39,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:39,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:00:39,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:00:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:00:39,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 19:00:39,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:39,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:39,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 19:00:39,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:40,134 INFO L124 PetriNetUnfolderBase]: 3526/5541 cut-off events. [2024-06-27 19:00:40,134 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-27 19:00:40,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 5541 events. 3526/5541 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 33852 event pairs, 1746 based on Foata normal form. 144/5113 useless extension candidates. Maximal degree in co-relation 10693. Up to 5060 conditions per place. [2024-06-27 19:00:40,163 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 47 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-27 19:00:40,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 245 flow [2024-06-27 19:00:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:00:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:00:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 19:00:40,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-27 19:00:40,174 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 93 transitions. [2024-06-27 19:00:40,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 245 flow [2024-06-27 19:00:40,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:40,182 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 136 flow [2024-06-27 19:00:40,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-06-27 19:00:40,186 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 19:00:40,186 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 136 flow [2024-06-27 19:00:40,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:40,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:40,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:40,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:00:40,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:40,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1369795097, now seen corresponding path program 1 times [2024-06-27 19:00:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:40,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012358485] [2024-06-27 19:00:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:40,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:40,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012358485] [2024-06-27 19:00:40,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012358485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:40,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:40,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:00:40,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44541969] [2024-06-27 19:00:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:40,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:00:40,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:00:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:00:40,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 19:00:40,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:40,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:40,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 19:00:40,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:40,767 INFO L124 PetriNetUnfolderBase]: 1382/2454 cut-off events. [2024-06-27 19:00:40,768 INFO L125 PetriNetUnfolderBase]: For 313/315 co-relation queries the response was YES. [2024-06-27 19:00:40,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 2454 events. 1382/2454 cut-off events. For 313/315 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15568 event pairs, 575 based on Foata normal form. 0/2379 useless extension candidates. Maximal degree in co-relation 5100. Up to 1659 conditions per place. [2024-06-27 19:00:40,779 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 48 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-06-27 19:00:40,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 65 transitions, 277 flow [2024-06-27 19:00:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:00:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:00:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-27 19:00:40,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2024-06-27 19:00:40,782 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 136 flow. Second operand 3 states and 97 transitions. [2024-06-27 19:00:40,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 65 transitions, 277 flow [2024-06-27 19:00:40,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 65 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:00:40,785 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 128 flow [2024-06-27 19:00:40,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 19:00:40,788 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 19:00:40,788 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 128 flow [2024-06-27 19:00:40,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:40,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:40,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:00:40,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:40,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1630453044, now seen corresponding path program 1 times [2024-06-27 19:00:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765649464] [2024-06-27 19:00:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:42,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:42,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765649464] [2024-06-27 19:00:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765649464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:42,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:00:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773546357] [2024-06-27 19:00:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:42,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:00:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:00:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:00:42,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:00:42,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:42,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:42,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:00:42,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:43,999 INFO L124 PetriNetUnfolderBase]: 3694/5791 cut-off events. [2024-06-27 19:00:43,999 INFO L125 PetriNetUnfolderBase]: For 1455/1455 co-relation queries the response was YES. [2024-06-27 19:00:44,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12706 conditions, 5791 events. 3694/5791 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 33713 event pairs, 1327 based on Foata normal form. 6/5640 useless extension candidates. Maximal degree in co-relation 12693. Up to 5208 conditions per place. [2024-06-27 19:00:44,022 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 56 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2024-06-27 19:00:44,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 324 flow [2024-06-27 19:00:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:00:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:00:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-06-27 19:00:44,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-06-27 19:00:44,024 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 128 flow. Second operand 4 states and 112 transitions. [2024-06-27 19:00:44,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 324 flow [2024-06-27 19:00:44,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:44,026 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 158 flow [2024-06-27 19:00:44,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 19:00:44,027 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-06-27 19:00:44,027 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 158 flow [2024-06-27 19:00:44,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:44,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:44,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:44,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:00:44,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:44,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2113576806, now seen corresponding path program 1 times [2024-06-27 19:00:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:44,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83804966] [2024-06-27 19:00:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:44,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:45,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83804966] [2024-06-27 19:00:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83804966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:45,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:45,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:00:45,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111209414] [2024-06-27 19:00:45,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:45,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:00:45,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:00:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:00:45,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:00:45,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 158 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) [2024-06-27 19:00:45,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:45,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:00:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:45,922 INFO L124 PetriNetUnfolderBase]: 2628/4213 cut-off events. [2024-06-27 19:00:45,922 INFO L125 PetriNetUnfolderBase]: For 1691/1691 co-relation queries the response was YES. [2024-06-27 19:00:45,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 4213 events. 2628/4213 cut-off events. For 1691/1691 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 24837 event pairs, 1195 based on Foata normal form. 4/4094 useless extension candidates. Maximal degree in co-relation 9763. Up to 3776 conditions per place. [2024-06-27 19:00:45,938 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 59 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-06-27 19:00:45,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 380 flow [2024-06-27 19:00:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:00:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:00:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 19:00:45,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-06-27 19:00:45,940 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 158 flow. Second operand 5 states and 119 transitions. [2024-06-27 19:00:45,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 380 flow [2024-06-27 19:00:45,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 358 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:45,942 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 220 flow [2024-06-27 19:00:45,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-06-27 19:00:45,943 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-06-27 19:00:45,943 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 220 flow [2024-06-27 19:00:45,943 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) [2024-06-27 19:00:45,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:45,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:45,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:00:45,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:45,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1081176414, now seen corresponding path program 1 times [2024-06-27 19:00:45,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125272571] [2024-06-27 19:00:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:45,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:47,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125272571] [2024-06-27 19:00:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125272571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:47,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:47,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:00:47,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185796807] [2024-06-27 19:00:47,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:47,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:00:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:00:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:00:47,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:00:47,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 220 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) [2024-06-27 19:00:47,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:47,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:00:47,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:48,311 INFO L124 PetriNetUnfolderBase]: 2623/4207 cut-off events. [2024-06-27 19:00:48,311 INFO L125 PetriNetUnfolderBase]: For 3432/3432 co-relation queries the response was YES. [2024-06-27 19:00:48,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11120 conditions, 4207 events. 2623/4207 cut-off events. For 3432/3432 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24754 event pairs, 1142 based on Foata normal form. 2/4086 useless extension candidates. Maximal degree in co-relation 11102. Up to 3766 conditions per place. [2024-06-27 19:00:48,330 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 72 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-06-27 19:00:48,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 565 flow [2024-06-27 19:00:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 19:00:48,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-27 19:00:48,332 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 220 flow. Second operand 6 states and 143 transitions. [2024-06-27 19:00:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 565 flow [2024-06-27 19:00:48,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 100 transitions, 534 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:48,335 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 367 flow [2024-06-27 19:00:48,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2024-06-27 19:00:48,336 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-06-27 19:00:48,336 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 367 flow [2024-06-27 19:00:48,336 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) [2024-06-27 19:00:48,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:48,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:48,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:00:48,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:48,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash 372275577, now seen corresponding path program 1 times [2024-06-27 19:00:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879559204] [2024-06-27 19:00:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:48,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879559204] [2024-06-27 19:00:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879559204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:50,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068717940] [2024-06-27 19:00:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:50,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:50,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:00:50,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 367 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) [2024-06-27 19:00:50,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:50,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:00:50,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:51,373 INFO L124 PetriNetUnfolderBase]: 2839/4531 cut-off events. [2024-06-27 19:00:51,373 INFO L125 PetriNetUnfolderBase]: For 6556/6556 co-relation queries the response was YES. [2024-06-27 19:00:51,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13445 conditions, 4531 events. 2839/4531 cut-off events. For 6556/6556 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26700 event pairs, 1114 based on Foata normal form. 26/4434 useless extension candidates. Maximal degree in co-relation 13423. Up to 3768 conditions per place. [2024-06-27 19:00:51,395 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 94 selfloop transitions, 24 changer transitions 0/126 dead transitions. [2024-06-27 19:00:51,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 126 transitions, 814 flow [2024-06-27 19:00:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 19:00:51,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-27 19:00:51,399 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 367 flow. Second operand 7 states and 174 transitions. [2024-06-27 19:00:51,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 126 transitions, 814 flow [2024-06-27 19:00:51,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 126 transitions, 780 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 19:00:51,409 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 514 flow [2024-06-27 19:00:51,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=70, PETRI_TRANSITIONS=81} [2024-06-27 19:00:51,412 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-06-27 19:00:51,412 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 514 flow [2024-06-27 19:00:51,413 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) [2024-06-27 19:00:51,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:51,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:51,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:00:51,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:51,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1522809244, now seen corresponding path program 1 times [2024-06-27 19:00:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:51,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97792229] [2024-06-27 19:00:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:51,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:53,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:53,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97792229] [2024-06-27 19:00:53,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97792229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:53,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:53,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:53,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617832818] [2024-06-27 19:00:53,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:53,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:53,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:00:53,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 81 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-27 19:00:53,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:53,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:00:53,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:54,318 INFO L124 PetriNetUnfolderBase]: 3555/5622 cut-off events. [2024-06-27 19:00:54,318 INFO L125 PetriNetUnfolderBase]: For 12536/12536 co-relation queries the response was YES. [2024-06-27 19:00:54,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18167 conditions, 5622 events. 3555/5622 cut-off events. For 12536/12536 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 32839 event pairs, 1218 based on Foata normal form. 2/5467 useless extension candidates. Maximal degree in co-relation 18141. Up to 5006 conditions per place. [2024-06-27 19:00:54,343 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 86 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-27 19:00:54,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 851 flow [2024-06-27 19:00:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:00:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:00:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 19:00:54,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 19:00:54,345 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 514 flow. Second operand 5 states and 118 transitions. [2024-06-27 19:00:54,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 851 flow [2024-06-27 19:00:54,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 810 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:54,360 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 618 flow [2024-06-27 19:00:54,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2024-06-27 19:00:54,361 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2024-06-27 19:00:54,361 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 618 flow [2024-06-27 19:00:54,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-27 19:00:54,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:54,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:54,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:00:54,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:54,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash -151529716, now seen corresponding path program 1 times [2024-06-27 19:00:54,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:54,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946946236] [2024-06-27 19:00:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:56,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946946236] [2024-06-27 19:00:56,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946946236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:56,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:56,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47679459] [2024-06-27 19:00:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:56,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:56,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:56,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:56,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:56,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:00:56,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 618 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:56,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:56,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:00:56,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:57,747 INFO L124 PetriNetUnfolderBase]: 3581/5667 cut-off events. [2024-06-27 19:00:57,747 INFO L125 PetriNetUnfolderBase]: For 16014/16014 co-relation queries the response was YES. [2024-06-27 19:00:57,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19528 conditions, 5667 events. 3581/5667 cut-off events. For 16014/16014 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 33126 event pairs, 1166 based on Foata normal form. 2/5512 useless extension candidates. Maximal degree in co-relation 19499. Up to 4956 conditions per place. [2024-06-27 19:00:57,770 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 88 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-06-27 19:00:57,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 127 transitions, 991 flow [2024-06-27 19:00:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 19:00:57,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-27 19:00:57,772 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 618 flow. Second operand 6 states and 143 transitions. [2024-06-27 19:00:57,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 127 transitions, 991 flow [2024-06-27 19:00:57,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 127 transitions, 960 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:57,786 INFO L231 Difference]: Finished difference. Result has 77 places, 93 transitions, 722 flow [2024-06-27 19:00:57,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=722, PETRI_PLACES=77, PETRI_TRANSITIONS=93} [2024-06-27 19:00:57,787 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-27 19:00:57,787 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 93 transitions, 722 flow [2024-06-27 19:00:57,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:57,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:57,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:57,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:00:57,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:57,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash 351788066, now seen corresponding path program 2 times [2024-06-27 19:00:57,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:57,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193488778] [2024-06-27 19:00:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:57,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:59,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193488778] [2024-06-27 19:00:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193488778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:59,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:59,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661239975] [2024-06-27 19:00:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:59,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:59,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:59,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:00:59,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 93 transitions, 722 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:59,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:59,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:00:59,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:01,224 INFO L124 PetriNetUnfolderBase]: 3579/5674 cut-off events. [2024-06-27 19:01:01,249 INFO L125 PetriNetUnfolderBase]: For 20583/20595 co-relation queries the response was YES. [2024-06-27 19:01:01,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20709 conditions, 5674 events. 3579/5674 cut-off events. For 20583/20595 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33412 event pairs, 1176 based on Foata normal form. 10/5530 useless extension candidates. Maximal degree in co-relation 20678. Up to 4996 conditions per place. [2024-06-27 19:01:01,277 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 116 selfloop transitions, 26 changer transitions 0/149 dead transitions. [2024-06-27 19:01:01,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 149 transitions, 1195 flow [2024-06-27 19:01:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:01:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:01:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 19:01:01,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 19:01:01,279 INFO L175 Difference]: Start difference. First operand has 77 places, 93 transitions, 722 flow. Second operand 8 states and 187 transitions. [2024-06-27 19:01:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 149 transitions, 1195 flow [2024-06-27 19:01:01,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 149 transitions, 1124 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 19:01:01,299 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 786 flow [2024-06-27 19:01:01,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=786, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2024-06-27 19:01:01,301 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-06-27 19:01:01,301 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 786 flow [2024-06-27 19:01:01,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:01,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:01,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:01,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:01:01,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:01,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1491587576, now seen corresponding path program 1 times [2024-06-27 19:01:01,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:01,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988386307] [2024-06-27 19:01:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:02,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:02,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988386307] [2024-06-27 19:01:02,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988386307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:02,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:02,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:01:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496305336] [2024-06-27 19:01:02,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:02,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:01:02,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:01:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:01:02,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:01:02,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:02,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:02,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:01:02,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:03,943 INFO L124 PetriNetUnfolderBase]: 2855/4552 cut-off events. [2024-06-27 19:01:03,944 INFO L125 PetriNetUnfolderBase]: For 21985/21985 co-relation queries the response was YES. [2024-06-27 19:01:03,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18077 conditions, 4552 events. 2855/4552 cut-off events. For 21985/21985 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26591 event pairs, 1082 based on Foata normal form. 2/4428 useless extension candidates. Maximal degree in co-relation 18044. Up to 4081 conditions per place. [2024-06-27 19:01:03,967 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 100 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-27 19:01:03,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 128 transitions, 1184 flow [2024-06-27 19:01:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 19:01:03,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-06-27 19:01:03,969 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 786 flow. Second operand 6 states and 131 transitions. [2024-06-27 19:01:03,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 128 transitions, 1184 flow [2024-06-27 19:01:03,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 128 transitions, 1087 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 19:01:03,983 INFO L231 Difference]: Finished difference. Result has 85 places, 106 transitions, 838 flow [2024-06-27 19:01:03,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=838, PETRI_PLACES=85, PETRI_TRANSITIONS=106} [2024-06-27 19:01:03,984 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-06-27 19:01:03,984 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 106 transitions, 838 flow [2024-06-27 19:01:03,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:03,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:03,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:03,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:01:03,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:03,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2059279999, now seen corresponding path program 1 times [2024-06-27 19:01:03,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:03,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942477195] [2024-06-27 19:01:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:05,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:05,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942477195] [2024-06-27 19:01:05,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942477195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:05,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:05,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:01:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224307144] [2024-06-27 19:01:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:05,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:01:05,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:01:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:01:05,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:05,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 106 transitions, 838 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:05,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:05,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:05,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:07,024 INFO L124 PetriNetUnfolderBase]: 3617/5721 cut-off events. [2024-06-27 19:01:07,024 INFO L125 PetriNetUnfolderBase]: For 29817/29817 co-relation queries the response was YES. [2024-06-27 19:01:07,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22825 conditions, 5721 events. 3617/5721 cut-off events. For 29817/29817 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33316 event pairs, 851 based on Foata normal form. 4/5568 useless extension candidates. Maximal degree in co-relation 22789. Up to 5074 conditions per place. [2024-06-27 19:01:07,059 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 115 selfloop transitions, 22 changer transitions 0/144 dead transitions. [2024-06-27 19:01:07,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 1250 flow [2024-06-27 19:01:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 19:01:07,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 19:01:07,061 INFO L175 Difference]: Start difference. First operand has 85 places, 106 transitions, 838 flow. Second operand 6 states and 140 transitions. [2024-06-27 19:01:07,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 1250 flow [2024-06-27 19:01:07,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 1224 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 19:01:07,089 INFO L231 Difference]: Finished difference. Result has 91 places, 113 transitions, 949 flow [2024-06-27 19:01:07,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=949, PETRI_PLACES=91, PETRI_TRANSITIONS=113} [2024-06-27 19:01:07,089 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2024-06-27 19:01:07,090 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 113 transitions, 949 flow [2024-06-27 19:01:07,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:07,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:07,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:07,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:01:07,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:07,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash 366044293, now seen corresponding path program 2 times [2024-06-27 19:01:07,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:07,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032606428] [2024-06-27 19:01:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:07,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:08,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:08,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032606428] [2024-06-27 19:01:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032606428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:08,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:08,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:01:08,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601155943] [2024-06-27 19:01:08,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:08,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:01:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:01:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:01:09,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:09,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 113 transitions, 949 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:09,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:09,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:09,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:10,388 INFO L124 PetriNetUnfolderBase]: 3614/5717 cut-off events. [2024-06-27 19:01:10,389 INFO L125 PetriNetUnfolderBase]: For 34659/34659 co-relation queries the response was YES. [2024-06-27 19:01:10,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23788 conditions, 5717 events. 3614/5717 cut-off events. For 34659/34659 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 33493 event pairs, 1054 based on Foata normal form. 4/5564 useless extension candidates. Maximal degree in co-relation 23748. Up to 5015 conditions per place. [2024-06-27 19:01:10,417 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 117 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2024-06-27 19:01:10,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 150 transitions, 1389 flow [2024-06-27 19:01:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 19:01:10,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:01:10,419 INFO L175 Difference]: Start difference. First operand has 91 places, 113 transitions, 949 flow. Second operand 6 states and 141 transitions. [2024-06-27 19:01:10,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 150 transitions, 1389 flow [2024-06-27 19:01:10,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 150 transitions, 1312 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:10,448 INFO L231 Difference]: Finished difference. Result has 94 places, 118 transitions, 1015 flow [2024-06-27 19:01:10,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1015, PETRI_PLACES=94, PETRI_TRANSITIONS=118} [2024-06-27 19:01:10,450 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2024-06-27 19:01:10,450 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 118 transitions, 1015 flow [2024-06-27 19:01:10,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:10,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:10,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:01:10,451 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:10,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:10,451 INFO L85 PathProgramCache]: Analyzing trace with hash -873447857, now seen corresponding path program 1 times [2024-06-27 19:01:10,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180897153] [2024-06-27 19:01:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:10,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:12,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:12,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180897153] [2024-06-27 19:01:12,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180897153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:12,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:12,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:01:12,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722844558] [2024-06-27 19:01:12,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:12,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:01:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:01:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:01:12,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:12,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 118 transitions, 1015 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:12,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:12,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:12,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:14,248 INFO L124 PetriNetUnfolderBase]: 3762/5963 cut-off events. [2024-06-27 19:01:14,253 INFO L125 PetriNetUnfolderBase]: For 43737/43737 co-relation queries the response was YES. [2024-06-27 19:01:14,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25833 conditions, 5963 events. 3762/5963 cut-off events. For 43737/43737 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34971 event pairs, 925 based on Foata normal form. 16/5822 useless extension candidates. Maximal degree in co-relation 25792. Up to 4637 conditions per place. [2024-06-27 19:01:14,285 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 117 selfloop transitions, 42 changer transitions 0/166 dead transitions. [2024-06-27 19:01:14,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 166 transitions, 1521 flow [2024-06-27 19:01:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 19:01:14,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-27 19:01:14,288 INFO L175 Difference]: Start difference. First operand has 94 places, 118 transitions, 1015 flow. Second operand 7 states and 171 transitions. [2024-06-27 19:01:14,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 166 transitions, 1521 flow [2024-06-27 19:01:14,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1426 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 19:01:14,361 INFO L231 Difference]: Finished difference. Result has 97 places, 120 transitions, 1074 flow [2024-06-27 19:01:14,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1074, PETRI_PLACES=97, PETRI_TRANSITIONS=120} [2024-06-27 19:01:14,361 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-27 19:01:14,361 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 120 transitions, 1074 flow [2024-06-27 19:01:14,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:14,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:14,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:01:14,362 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:14,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1979462649, now seen corresponding path program 2 times [2024-06-27 19:01:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:14,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424873496] [2024-06-27 19:01:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:16,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424873496] [2024-06-27 19:01:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424873496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:16,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:16,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:01:16,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017771331] [2024-06-27 19:01:16,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:16,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:01:16,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:01:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:01:16,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:16,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 120 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:16,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:16,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:16,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:18,168 INFO L124 PetriNetUnfolderBase]: 4206/6571 cut-off events. [2024-06-27 19:01:18,168 INFO L125 PetriNetUnfolderBase]: For 57405/57405 co-relation queries the response was YES. [2024-06-27 19:01:18,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30207 conditions, 6571 events. 4206/6571 cut-off events. For 57405/57405 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 38856 event pairs, 1022 based on Foata normal form. 12/6456 useless extension candidates. Maximal degree in co-relation 30165. Up to 5033 conditions per place. [2024-06-27 19:01:18,202 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 125 selfloop transitions, 65 changer transitions 0/197 dead transitions. [2024-06-27 19:01:18,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 197 transitions, 2038 flow [2024-06-27 19:01:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:01:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:01:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:01:18,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 19:01:18,204 INFO L175 Difference]: Start difference. First operand has 97 places, 120 transitions, 1074 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:01:18,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 197 transitions, 2038 flow [2024-06-27 19:01:18,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 197 transitions, 1938 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:01:18,258 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1543 flow [2024-06-27 19:01:18,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1543, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-06-27 19:01:18,258 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-27 19:01:18,259 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1543 flow [2024-06-27 19:01:18,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:18,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:18,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:18,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:01:18,259 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:18,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1979470089, now seen corresponding path program 3 times [2024-06-27 19:01:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629479498] [2024-06-27 19:01:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:18,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629479498] [2024-06-27 19:01:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629479498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:01:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767460637] [2024-06-27 19:01:20,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:01:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:01:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:01:20,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:20,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1543 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:20,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:20,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:20,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:22,365 INFO L124 PetriNetUnfolderBase]: 4196/6562 cut-off events. [2024-06-27 19:01:22,365 INFO L125 PetriNetUnfolderBase]: For 69535/69547 co-relation queries the response was YES. [2024-06-27 19:01:22,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32198 conditions, 6562 events. 4196/6562 cut-off events. For 69535/69547 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 38861 event pairs, 1192 based on Foata normal form. 24/6462 useless extension candidates. Maximal degree in co-relation 32152. Up to 5724 conditions per place. [2024-06-27 19:01:22,404 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 166 selfloop transitions, 31 changer transitions 0/204 dead transitions. [2024-06-27 19:01:22,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 204 transitions, 2201 flow [2024-06-27 19:01:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:01:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:01:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 19:01:22,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 19:01:22,407 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1543 flow. Second operand 9 states and 213 transitions. [2024-06-27 19:01:22,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 204 transitions, 2201 flow [2024-06-27 19:01:22,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 204 transitions, 2029 flow, removed 78 selfloop flow, removed 2 redundant places. [2024-06-27 19:01:22,504 INFO L231 Difference]: Finished difference. Result has 110 places, 140 transitions, 1511 flow [2024-06-27 19:01:22,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1511, PETRI_PLACES=110, PETRI_TRANSITIONS=140} [2024-06-27 19:01:22,506 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-06-27 19:01:22,506 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 140 transitions, 1511 flow [2024-06-27 19:01:22,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:22,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:22,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:01:22,506 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:22,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1005427967, now seen corresponding path program 1 times [2024-06-27 19:01:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:22,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204398814] [2024-06-27 19:01:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:22,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:24,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:24,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204398814] [2024-06-27 19:01:24,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204398814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:24,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:24,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:01:24,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157847984] [2024-06-27 19:01:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:24,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:01:24,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:24,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:01:24,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:01:24,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:24,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 140 transitions, 1511 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2024-06-27 19:01:24,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:24,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:24,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:25,642 INFO L124 PetriNetUnfolderBase]: 4190/6629 cut-off events. [2024-06-27 19:01:25,642 INFO L125 PetriNetUnfolderBase]: For 63238/63238 co-relation queries the response was YES. [2024-06-27 19:01:25,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31705 conditions, 6629 events. 4190/6629 cut-off events. For 63238/63238 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 39438 event pairs, 1258 based on Foata normal form. 2/6482 useless extension candidates. Maximal degree in co-relation 31657. Up to 6074 conditions per place. [2024-06-27 19:01:25,688 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 161 selfloop transitions, 15 changer transitions 0/183 dead transitions. [2024-06-27 19:01:25,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 183 transitions, 2125 flow [2024-06-27 19:01:25,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 19:01:25,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-06-27 19:01:25,690 INFO L175 Difference]: Start difference. First operand has 110 places, 140 transitions, 1511 flow. Second operand 6 states and 133 transitions. [2024-06-27 19:01:25,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 183 transitions, 2125 flow [2024-06-27 19:01:25,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 183 transitions, 2065 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 19:01:25,757 INFO L231 Difference]: Finished difference. Result has 111 places, 153 transitions, 1646 flow [2024-06-27 19:01:25,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1646, PETRI_PLACES=111, PETRI_TRANSITIONS=153} [2024-06-27 19:01:25,758 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-06-27 19:01:25,758 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 153 transitions, 1646 flow [2024-06-27 19:01:25,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2024-06-27 19:01:25,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:25,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:25,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:01:25,758 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:25,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2055335341, now seen corresponding path program 1 times [2024-06-27 19:01:25,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698648915] [2024-06-27 19:01:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:27,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:27,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698648915] [2024-06-27 19:01:27,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698648915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:27,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:27,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:01:27,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689885675] [2024-06-27 19:01:27,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:01:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:27,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:01:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:01:27,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:27,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 1646 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:27,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:27,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:27,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:29,679 INFO L124 PetriNetUnfolderBase]: 4201/6645 cut-off events. [2024-06-27 19:01:29,679 INFO L125 PetriNetUnfolderBase]: For 66793/66793 co-relation queries the response was YES. [2024-06-27 19:01:29,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32482 conditions, 6645 events. 4201/6645 cut-off events. For 66793/66793 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 39363 event pairs, 867 based on Foata normal form. 12/6500 useless extension candidates. Maximal degree in co-relation 32431. Up to 5828 conditions per place. [2024-06-27 19:01:29,717 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 168 selfloop transitions, 36 changer transitions 0/211 dead transitions. [2024-06-27 19:01:29,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 211 transitions, 2353 flow [2024-06-27 19:01:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:01:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:01:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 19:01:29,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734042553191489 [2024-06-27 19:01:29,719 INFO L175 Difference]: Start difference. First operand has 111 places, 153 transitions, 1646 flow. Second operand 8 states and 178 transitions. [2024-06-27 19:01:29,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 211 transitions, 2353 flow [2024-06-27 19:01:29,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 211 transitions, 2349 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 19:01:29,780 INFO L231 Difference]: Finished difference. Result has 120 places, 167 transitions, 1948 flow [2024-06-27 19:01:29,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1948, PETRI_PLACES=120, PETRI_TRANSITIONS=167} [2024-06-27 19:01:29,781 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2024-06-27 19:01:29,781 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 167 transitions, 1948 flow [2024-06-27 19:01:29,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:29,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:29,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:29,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:01:29,781 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:29,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1097806438, now seen corresponding path program 1 times [2024-06-27 19:01:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677989393] [2024-06-27 19:01:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:31,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677989393] [2024-06-27 19:01:31,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677989393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:31,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:31,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:01:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759761397] [2024-06-27 19:01:31,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:01:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:31,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:01:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:01:32,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:01:32,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 167 transitions, 1948 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) [2024-06-27 19:01:32,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:32,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:01:32,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:33,317 INFO L124 PetriNetUnfolderBase]: 4018/6495 cut-off events. [2024-06-27 19:01:33,318 INFO L125 PetriNetUnfolderBase]: For 72284/72284 co-relation queries the response was YES. [2024-06-27 19:01:33,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33167 conditions, 6495 events. 4018/6495 cut-off events. For 72284/72284 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 39433 event pairs, 1163 based on Foata normal form. 3/6340 useless extension candidates. Maximal degree in co-relation 33110. Up to 5825 conditions per place. [2024-06-27 19:01:33,359 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 172 selfloop transitions, 22 changer transitions 0/205 dead transitions. [2024-06-27 19:01:33,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 205 transitions, 2572 flow [2024-06-27 19:01:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 19:01:33,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46200607902735563 [2024-06-27 19:01:33,361 INFO L175 Difference]: Start difference. First operand has 120 places, 167 transitions, 1948 flow. Second operand 7 states and 152 transitions. [2024-06-27 19:01:33,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 205 transitions, 2572 flow [2024-06-27 19:01:33,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 205 transitions, 2430 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:33,444 INFO L231 Difference]: Finished difference. Result has 126 places, 176 transitions, 2010 flow [2024-06-27 19:01:33,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2010, PETRI_PLACES=126, PETRI_TRANSITIONS=176} [2024-06-27 19:01:33,445 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-06-27 19:01:33,445 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 176 transitions, 2010 flow [2024-06-27 19:01:33,445 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) [2024-06-27 19:01:33,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:33,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:33,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:01:33,446 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:33,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1861606458, now seen corresponding path program 2 times [2024-06-27 19:01:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:33,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132879636] [2024-06-27 19:01:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:33,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132879636] [2024-06-27 19:01:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132879636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:35,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:01:35,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866811845] [2024-06-27 19:01:35,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:35,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:01:35,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:01:35,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:01:35,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:01:35,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 176 transitions, 2010 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) [2024-06-27 19:01:35,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:35,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:01:35,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:36,468 INFO L124 PetriNetUnfolderBase]: 4052/6535 cut-off events. [2024-06-27 19:01:36,468 INFO L125 PetriNetUnfolderBase]: For 78992/78992 co-relation queries the response was YES. [2024-06-27 19:01:36,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34394 conditions, 6535 events. 4052/6535 cut-off events. For 78992/78992 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39560 event pairs, 1245 based on Foata normal form. 3/6374 useless extension candidates. Maximal degree in co-relation 34333. Up to 5875 conditions per place. [2024-06-27 19:01:36,511 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 177 selfloop transitions, 21 changer transitions 0/209 dead transitions. [2024-06-27 19:01:36,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 209 transitions, 2616 flow [2024-06-27 19:01:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 19:01:36,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-27 19:01:36,514 INFO L175 Difference]: Start difference. First operand has 126 places, 176 transitions, 2010 flow. Second operand 6 states and 135 transitions. [2024-06-27 19:01:36,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 209 transitions, 2616 flow [2024-06-27 19:01:36,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 209 transitions, 2552 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 19:01:36,612 INFO L231 Difference]: Finished difference. Result has 131 places, 185 transitions, 2128 flow [2024-06-27 19:01:36,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2128, PETRI_PLACES=131, PETRI_TRANSITIONS=185} [2024-06-27 19:01:36,613 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-27 19:01:36,613 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 185 transitions, 2128 flow [2024-06-27 19:01:36,613 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) [2024-06-27 19:01:36,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:36,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:36,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:01:36,614 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:36,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash -505975776, now seen corresponding path program 1 times [2024-06-27 19:01:36,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701311856] [2024-06-27 19:01:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:36,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701311856] [2024-06-27 19:01:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701311856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:38,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022810368] [2024-06-27 19:01:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:38,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:38,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:38,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 185 transitions, 2128 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:38,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:38,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:38,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:40,400 INFO L124 PetriNetUnfolderBase]: 4410/6972 cut-off events. [2024-06-27 19:01:40,401 INFO L125 PetriNetUnfolderBase]: For 87636/87639 co-relation queries the response was YES. [2024-06-27 19:01:40,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37148 conditions, 6972 events. 4410/6972 cut-off events. For 87636/87639 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 41686 event pairs, 1250 based on Foata normal form. 4/6810 useless extension candidates. Maximal degree in co-relation 37084. Up to 6183 conditions per place. [2024-06-27 19:01:40,452 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 169 selfloop transitions, 41 changer transitions 0/217 dead transitions. [2024-06-27 19:01:40,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 217 transitions, 2738 flow [2024-06-27 19:01:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 19:01:40,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 19:01:40,454 INFO L175 Difference]: Start difference. First operand has 131 places, 185 transitions, 2128 flow. Second operand 6 states and 138 transitions. [2024-06-27 19:01:40,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 217 transitions, 2738 flow [2024-06-27 19:01:40,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 217 transitions, 2670 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:40,572 INFO L231 Difference]: Finished difference. Result has 134 places, 188 transitions, 2198 flow [2024-06-27 19:01:40,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2198, PETRI_PLACES=134, PETRI_TRANSITIONS=188} [2024-06-27 19:01:40,573 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-06-27 19:01:40,573 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 188 transitions, 2198 flow [2024-06-27 19:01:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:40,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:40,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:01:40,575 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:40,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -151297026, now seen corresponding path program 2 times [2024-06-27 19:01:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160262573] [2024-06-27 19:01:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:42,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160262573] [2024-06-27 19:01:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160262573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:42,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651224854] [2024-06-27 19:01:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:42,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:42,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:42,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 188 transitions, 2198 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:42,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:42,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:42,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:44,510 INFO L124 PetriNetUnfolderBase]: 4398/6950 cut-off events. [2024-06-27 19:01:44,511 INFO L125 PetriNetUnfolderBase]: For 92502/92505 co-relation queries the response was YES. [2024-06-27 19:01:44,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37821 conditions, 6950 events. 4398/6950 cut-off events. For 92502/92505 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 41478 event pairs, 1242 based on Foata normal form. 4/6792 useless extension candidates. Maximal degree in co-relation 37756. Up to 6091 conditions per place. [2024-06-27 19:01:44,567 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 178 selfloop transitions, 44 changer transitions 0/229 dead transitions. [2024-06-27 19:01:44,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 229 transitions, 2900 flow [2024-06-27 19:01:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 19:01:44,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 19:01:44,569 INFO L175 Difference]: Start difference. First operand has 134 places, 188 transitions, 2198 flow. Second operand 7 states and 160 transitions. [2024-06-27 19:01:44,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 229 transitions, 2900 flow [2024-06-27 19:01:44,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 229 transitions, 2804 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:01:44,689 INFO L231 Difference]: Finished difference. Result has 137 places, 191 transitions, 2246 flow [2024-06-27 19:01:44,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2246, PETRI_PLACES=137, PETRI_TRANSITIONS=191} [2024-06-27 19:01:44,690 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-27 19:01:44,690 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 191 transitions, 2246 flow [2024-06-27 19:01:44,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:44,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:44,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:44,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:01:44,690 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:44,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash -327826588, now seen corresponding path program 1 times [2024-06-27 19:01:44,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:44,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315050960] [2024-06-27 19:01:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:44,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:48,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:48,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315050960] [2024-06-27 19:01:48,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315050960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:48,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:48,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:48,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951579213] [2024-06-27 19:01:48,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:48,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:48,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:01:48,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 191 transitions, 2246 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) [2024-06-27 19:01:48,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:48,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:01:48,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:49,716 INFO L124 PetriNetUnfolderBase]: 4264/6868 cut-off events. [2024-06-27 19:01:49,716 INFO L125 PetriNetUnfolderBase]: For 96907/96932 co-relation queries the response was YES. [2024-06-27 19:01:49,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38527 conditions, 6868 events. 4264/6868 cut-off events. For 96907/96932 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 42018 event pairs, 1163 based on Foata normal form. 19/6705 useless extension candidates. Maximal degree in co-relation 38461. Up to 5992 conditions per place. [2024-06-27 19:01:49,768 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 194 selfloop transitions, 36 changer transitions 0/241 dead transitions. [2024-06-27 19:01:49,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 241 transitions, 3074 flow [2024-06-27 19:01:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 19:01:49,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 19:01:49,770 INFO L175 Difference]: Start difference. First operand has 137 places, 191 transitions, 2246 flow. Second operand 7 states and 169 transitions. [2024-06-27 19:01:49,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 241 transitions, 3074 flow [2024-06-27 19:01:49,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 241 transitions, 2970 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:01:49,884 INFO L231 Difference]: Finished difference. Result has 140 places, 200 transitions, 2409 flow [2024-06-27 19:01:49,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2409, PETRI_PLACES=140, PETRI_TRANSITIONS=200} [2024-06-27 19:01:49,885 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2024-06-27 19:01:49,885 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 200 transitions, 2409 flow [2024-06-27 19:01:49,885 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) [2024-06-27 19:01:49,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:49,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:49,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:01:49,885 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:49,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash -373050389, now seen corresponding path program 1 times [2024-06-27 19:01:49,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:49,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926696743] [2024-06-27 19:01:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:49,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:52,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:52,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926696743] [2024-06-27 19:01:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926696743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:52,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:52,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:52,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821083222] [2024-06-27 19:01:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:52,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:52,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:52,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 200 transitions, 2409 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:52,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:52,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:52,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:53,789 INFO L124 PetriNetUnfolderBase]: 4606/7257 cut-off events. [2024-06-27 19:01:53,790 INFO L125 PetriNetUnfolderBase]: For 108641/108641 co-relation queries the response was YES. [2024-06-27 19:01:53,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41631 conditions, 7257 events. 4606/7257 cut-off events. For 108641/108641 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 43490 event pairs, 1256 based on Foata normal form. 2/7091 useless extension candidates. Maximal degree in co-relation 41563. Up to 6617 conditions per place. [2024-06-27 19:01:53,848 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 227 selfloop transitions, 17 changer transitions 0/251 dead transitions. [2024-06-27 19:01:53,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 251 transitions, 3231 flow [2024-06-27 19:01:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 19:01:53,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 19:01:53,850 INFO L175 Difference]: Start difference. First operand has 140 places, 200 transitions, 2409 flow. Second operand 7 states and 154 transitions. [2024-06-27 19:01:53,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 251 transitions, 3231 flow [2024-06-27 19:01:54,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 251 transitions, 3166 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:54,032 INFO L231 Difference]: Finished difference. Result has 147 places, 213 transitions, 2579 flow [2024-06-27 19:01:54,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2579, PETRI_PLACES=147, PETRI_TRANSITIONS=213} [2024-06-27 19:01:54,033 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-06-27 19:01:54,033 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 213 transitions, 2579 flow [2024-06-27 19:01:54,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:54,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:54,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:01:54,034 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:54,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash -327736378, now seen corresponding path program 2 times [2024-06-27 19:01:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626879056] [2024-06-27 19:01:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:56,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:56,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626879056] [2024-06-27 19:01:56,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626879056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:56,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:56,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740352734] [2024-06-27 19:01:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:56,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:01:56,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 213 transitions, 2579 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) [2024-06-27 19:01:56,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:56,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:01:56,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:58,017 INFO L124 PetriNetUnfolderBase]: 4333/6947 cut-off events. [2024-06-27 19:01:58,017 INFO L125 PetriNetUnfolderBase]: For 109854/109879 co-relation queries the response was YES. [2024-06-27 19:01:58,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41054 conditions, 6947 events. 4333/6947 cut-off events. For 109854/109879 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 42256 event pairs, 1181 based on Foata normal form. 19/6786 useless extension candidates. Maximal degree in co-relation 40981. Up to 6147 conditions per place. [2024-06-27 19:01:58,073 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 205 selfloop transitions, 32 changer transitions 0/252 dead transitions. [2024-06-27 19:01:58,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 252 transitions, 3274 flow [2024-06-27 19:01:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 19:01:58,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-06-27 19:01:58,074 INFO L175 Difference]: Start difference. First operand has 147 places, 213 transitions, 2579 flow. Second operand 7 states and 162 transitions. [2024-06-27 19:01:58,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 252 transitions, 3274 flow [2024-06-27 19:01:58,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 252 transitions, 3228 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 19:01:58,259 INFO L231 Difference]: Finished difference. Result has 153 places, 216 transitions, 2664 flow [2024-06-27 19:01:58,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2664, PETRI_PLACES=153, PETRI_TRANSITIONS=216} [2024-06-27 19:01:58,259 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-27 19:01:58,259 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 216 transitions, 2664 flow [2024-06-27 19:01:58,260 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) [2024-06-27 19:01:58,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:58,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:58,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:01:58,260 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:58,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1874986563, now seen corresponding path program 2 times [2024-06-27 19:01:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523954767] [2024-06-27 19:01:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:59,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:59,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523954767] [2024-06-27 19:01:59,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523954767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:59,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:59,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:59,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504758590] [2024-06-27 19:01:59,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:59,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:59,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:59,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:59,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:59,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:01:59,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 216 transitions, 2664 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:59,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:59,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:01:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:01,833 INFO L124 PetriNetUnfolderBase]: 4643/7313 cut-off events. [2024-06-27 19:02:01,833 INFO L125 PetriNetUnfolderBase]: For 115244/115244 co-relation queries the response was YES. [2024-06-27 19:02:01,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42893 conditions, 7313 events. 4643/7313 cut-off events. For 115244/115244 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43810 event pairs, 1250 based on Foata normal form. 2/7145 useless extension candidates. Maximal degree in co-relation 42817. Up to 6673 conditions per place. [2024-06-27 19:02:01,889 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 230 selfloop transitions, 17 changer transitions 0/254 dead transitions. [2024-06-27 19:02:01,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 254 transitions, 3343 flow [2024-06-27 19:02:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:02:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:02:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 19:02:01,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2024-06-27 19:02:01,891 INFO L175 Difference]: Start difference. First operand has 153 places, 216 transitions, 2664 flow. Second operand 7 states and 147 transitions. [2024-06-27 19:02:01,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 254 transitions, 3343 flow [2024-06-27 19:02:02,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 254 transitions, 3275 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:02,052 INFO L231 Difference]: Finished difference. Result has 157 places, 225 transitions, 2746 flow [2024-06-27 19:02:02,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2596, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2746, PETRI_PLACES=157, PETRI_TRANSITIONS=225} [2024-06-27 19:02:02,052 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 104 predicate places. [2024-06-27 19:02:02,053 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 225 transitions, 2746 flow [2024-06-27 19:02:02,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:02,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:02,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:02,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:02:02,053 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:02,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:02,054 INFO L85 PathProgramCache]: Analyzing trace with hash -151527263, now seen corresponding path program 3 times [2024-06-27 19:02:02,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:02,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135204057] [2024-06-27 19:02:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:02,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:04,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135204057] [2024-06-27 19:02:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135204057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:04,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:04,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:02:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723840361] [2024-06-27 19:02:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:04,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:02:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:02:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:02:04,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:02:04,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 225 transitions, 2746 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:04,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:04,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:02:04,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:06,007 INFO L124 PetriNetUnfolderBase]: 4677/7363 cut-off events. [2024-06-27 19:02:06,008 INFO L125 PetriNetUnfolderBase]: For 127634/127634 co-relation queries the response was YES. [2024-06-27 19:02:06,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44120 conditions, 7363 events. 4677/7363 cut-off events. For 127634/127634 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44488 event pairs, 2192 based on Foata normal form. 2/7192 useless extension candidates. Maximal degree in co-relation 44041. Up to 6636 conditions per place. [2024-06-27 19:02:06,077 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 231 selfloop transitions, 34 changer transitions 0/272 dead transitions. [2024-06-27 19:02:06,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 272 transitions, 3586 flow [2024-06-27 19:02:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-27 19:02:06,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441489361702128 [2024-06-27 19:02:06,078 INFO L175 Difference]: Start difference. First operand has 157 places, 225 transitions, 2746 flow. Second operand 8 states and 167 transitions. [2024-06-27 19:02:06,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 272 transitions, 3586 flow [2024-06-27 19:02:06,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 272 transitions, 3530 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 19:02:06,267 INFO L231 Difference]: Finished difference. Result has 164 places, 236 transitions, 2922 flow [2024-06-27 19:02:06,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2922, PETRI_PLACES=164, PETRI_TRANSITIONS=236} [2024-06-27 19:02:06,268 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 111 predicate places. [2024-06-27 19:02:06,268 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 236 transitions, 2922 flow [2024-06-27 19:02:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:06,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:06,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:06,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:02:06,269 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:06,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash -151527418, now seen corresponding path program 3 times [2024-06-27 19:02:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:06,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377031484] [2024-06-27 19:02:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:08,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:08,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377031484] [2024-06-27 19:02:08,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377031484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:08,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:08,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:02:08,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202356970] [2024-06-27 19:02:08,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:08,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:02:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:02:08,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:02:08,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:02:08,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 236 transitions, 2922 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) [2024-06-27 19:02:08,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:08,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:02:08,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:10,230 INFO L124 PetriNetUnfolderBase]: 4462/7161 cut-off events. [2024-06-27 19:02:10,230 INFO L125 PetriNetUnfolderBase]: For 127041/127050 co-relation queries the response was YES. [2024-06-27 19:02:10,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43956 conditions, 7161 events. 4462/7161 cut-off events. For 127041/127050 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 43692 event pairs, 1285 based on Foata normal form. 3/6971 useless extension candidates. Maximal degree in co-relation 43874. Up to 6289 conditions per place. [2024-06-27 19:02:10,298 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 220 selfloop transitions, 30 changer transitions 0/271 dead transitions. [2024-06-27 19:02:10,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 271 transitions, 3660 flow [2024-06-27 19:02:10,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:02:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:02:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 19:02:10,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-06-27 19:02:10,300 INFO L175 Difference]: Start difference. First operand has 164 places, 236 transitions, 2922 flow. Second operand 7 states and 157 transitions. [2024-06-27 19:02:10,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 271 transitions, 3660 flow [2024-06-27 19:02:10,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 271 transitions, 3564 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 19:02:10,506 INFO L231 Difference]: Finished difference. Result has 167 places, 241 transitions, 3005 flow [2024-06-27 19:02:10,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3005, PETRI_PLACES=167, PETRI_TRANSITIONS=241} [2024-06-27 19:02:10,506 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 114 predicate places. [2024-06-27 19:02:10,506 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 241 transitions, 3005 flow [2024-06-27 19:02:10,506 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) [2024-06-27 19:02:10,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:10,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:10,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:02:10,507 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:10,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:10,507 INFO L85 PathProgramCache]: Analyzing trace with hash -151282146, now seen corresponding path program 1 times [2024-06-27 19:02:10,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:10,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354527033] [2024-06-27 19:02:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:10,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354527033] [2024-06-27 19:02:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354527033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622253958] [2024-06-27 19:02:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:13,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:13,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:02:13,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 241 transitions, 3005 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:13,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:13,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:02:13,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:15,100 INFO L124 PetriNetUnfolderBase]: 4705/7425 cut-off events. [2024-06-27 19:02:15,100 INFO L125 PetriNetUnfolderBase]: For 144750/144750 co-relation queries the response was YES. [2024-06-27 19:02:15,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46491 conditions, 7425 events. 4705/7425 cut-off events. For 144750/144750 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 44981 event pairs, 2204 based on Foata normal form. 2/7246 useless extension candidates. Maximal degree in co-relation 46408. Up to 6739 conditions per place. [2024-06-27 19:02:15,156 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 245 selfloop transitions, 25 changer transitions 0/277 dead transitions. [2024-06-27 19:02:15,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 277 transitions, 3740 flow [2024-06-27 19:02:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:02:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:02:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 19:02:15,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46200607902735563 [2024-06-27 19:02:15,158 INFO L175 Difference]: Start difference. First operand has 167 places, 241 transitions, 3005 flow. Second operand 7 states and 152 transitions. [2024-06-27 19:02:15,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 277 transitions, 3740 flow [2024-06-27 19:02:15,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 277 transitions, 3599 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:15,313 INFO L231 Difference]: Finished difference. Result has 169 places, 243 transitions, 2944 flow [2024-06-27 19:02:15,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2944, PETRI_PLACES=169, PETRI_TRANSITIONS=243} [2024-06-27 19:02:15,317 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-27 19:02:15,317 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 243 transitions, 2944 flow [2024-06-27 19:02:15,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:15,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:15,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:15,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:02:15,318 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:15,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:15,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1572747643, now seen corresponding path program 1 times [2024-06-27 19:02:15,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:15,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390872982] [2024-06-27 19:02:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:15,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:17,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:17,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390872982] [2024-06-27 19:02:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390872982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:17,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:17,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564909130] [2024-06-27 19:02:17,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:17,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:17,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:17,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:17,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:02:17,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 243 transitions, 2944 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) [2024-06-27 19:02:17,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:17,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:02:17,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:19,587 INFO L124 PetriNetUnfolderBase]: 4601/7407 cut-off events. [2024-06-27 19:02:19,587 INFO L125 PetriNetUnfolderBase]: For 144440/144452 co-relation queries the response was YES. [2024-06-27 19:02:19,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46462 conditions, 7407 events. 4601/7407 cut-off events. For 144440/144452 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 45700 event pairs, 1078 based on Foata normal form. 8/7217 useless extension candidates. Maximal degree in co-relation 46378. Up to 6293 conditions per place. [2024-06-27 19:02:19,664 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 254 selfloop transitions, 34 changer transitions 0/310 dead transitions. [2024-06-27 19:02:19,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 310 transitions, 4058 flow [2024-06-27 19:02:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 19:02:19,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 19:02:19,665 INFO L175 Difference]: Start difference. First operand has 169 places, 243 transitions, 2944 flow. Second operand 8 states and 191 transitions. [2024-06-27 19:02:19,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 310 transitions, 4058 flow [2024-06-27 19:02:19,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 310 transitions, 4000 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:19,902 INFO L231 Difference]: Finished difference. Result has 175 places, 255 transitions, 3207 flow [2024-06-27 19:02:19,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3207, PETRI_PLACES=175, PETRI_TRANSITIONS=255} [2024-06-27 19:02:19,904 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 122 predicate places. [2024-06-27 19:02:19,905 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 255 transitions, 3207 flow [2024-06-27 19:02:19,905 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) [2024-06-27 19:02:19,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:19,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:19,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:02:19,905 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:19,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:19,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1317541081, now seen corresponding path program 1 times [2024-06-27 19:02:19,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:19,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379998607] [2024-06-27 19:02:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379998607] [2024-06-27 19:02:22,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379998607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:22,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:22,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976926351] [2024-06-27 19:02:22,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:22,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:02:22,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 255 transitions, 3207 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:22,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:22,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:02:22,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:24,459 INFO L124 PetriNetUnfolderBase]: 4997/7851 cut-off events. [2024-06-27 19:02:24,460 INFO L125 PetriNetUnfolderBase]: For 164764/164764 co-relation queries the response was YES. [2024-06-27 19:02:24,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50324 conditions, 7851 events. 4997/7851 cut-off events. For 164764/164764 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 47800 event pairs, 2222 based on Foata normal form. 2/7666 useless extension candidates. Maximal degree in co-relation 50236. Up to 6882 conditions per place. [2024-06-27 19:02:24,533 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 277 selfloop transitions, 57 changer transitions 0/341 dead transitions. [2024-06-27 19:02:24,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 341 transitions, 4697 flow [2024-06-27 19:02:24,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 19:02:24,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 19:02:24,535 INFO L175 Difference]: Start difference. First operand has 175 places, 255 transitions, 3207 flow. Second operand 8 states and 190 transitions. [2024-06-27 19:02:24,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 341 transitions, 4697 flow [2024-06-27 19:02:24,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 341 transitions, 4626 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 19:02:24,795 INFO L231 Difference]: Finished difference. Result has 184 places, 279 transitions, 3734 flow [2024-06-27 19:02:24,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3734, PETRI_PLACES=184, PETRI_TRANSITIONS=279} [2024-06-27 19:02:24,796 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-06-27 19:02:24,797 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 279 transitions, 3734 flow [2024-06-27 19:02:24,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:24,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:24,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:24,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:02:24,797 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:24,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1572687193, now seen corresponding path program 2 times [2024-06-27 19:02:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312189017] [2024-06-27 19:02:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312189017] [2024-06-27 19:02:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312189017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183521994] [2024-06-27 19:02:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:28,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:28,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:28,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:02:28,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 279 transitions, 3734 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) [2024-06-27 19:02:28,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:28,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:02:28,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:30,145 INFO L124 PetriNetUnfolderBase]: 4900/7818 cut-off events. [2024-06-27 19:02:30,146 INFO L125 PetriNetUnfolderBase]: For 174044/174056 co-relation queries the response was YES. [2024-06-27 19:02:30,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51833 conditions, 7818 events. 4900/7818 cut-off events. For 174044/174056 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 48261 event pairs, 1223 based on Foata normal form. 18/7639 useless extension candidates. Maximal degree in co-relation 51740. Up to 6490 conditions per place. [2024-06-27 19:02:30,228 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 245 selfloop transitions, 61 changer transitions 0/332 dead transitions. [2024-06-27 19:02:30,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 332 transitions, 4687 flow [2024-06-27 19:02:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 19:02:30,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 19:02:30,237 INFO L175 Difference]: Start difference. First operand has 184 places, 279 transitions, 3734 flow. Second operand 8 states and 193 transitions. [2024-06-27 19:02:30,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 332 transitions, 4687 flow [2024-06-27 19:02:30,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 332 transitions, 4582 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-27 19:02:30,607 INFO L231 Difference]: Finished difference. Result has 190 places, 282 transitions, 3831 flow [2024-06-27 19:02:30,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3831, PETRI_PLACES=190, PETRI_TRANSITIONS=282} [2024-06-27 19:02:30,608 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 137 predicate places. [2024-06-27 19:02:30,608 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 282 transitions, 3831 flow [2024-06-27 19:02:30,608 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) [2024-06-27 19:02:30,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:30,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:30,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:02:30,609 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:30,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1569890559, now seen corresponding path program 2 times [2024-06-27 19:02:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225258270] [2024-06-27 19:02:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:33,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:33,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225258270] [2024-06-27 19:02:33,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225258270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:33,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:33,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:33,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787185906] [2024-06-27 19:02:33,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:33,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:33,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:33,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:33,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:02:33,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 282 transitions, 3831 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:33,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:33,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:02:33,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:35,632 INFO L124 PetriNetUnfolderBase]: 5176/7995 cut-off events. [2024-06-27 19:02:35,632 INFO L125 PetriNetUnfolderBase]: For 187055/187055 co-relation queries the response was YES. [2024-06-27 19:02:35,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54447 conditions, 7995 events. 5176/7995 cut-off events. For 187055/187055 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 48408 event pairs, 2349 based on Foata normal form. 2/7849 useless extension candidates. Maximal degree in co-relation 54352. Up to 7363 conditions per place. [2024-06-27 19:02:35,716 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 307 selfloop transitions, 26 changer transitions 0/340 dead transitions. [2024-06-27 19:02:35,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 340 transitions, 4859 flow [2024-06-27 19:02:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:02:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:02:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-27 19:02:35,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46099290780141844 [2024-06-27 19:02:35,717 INFO L175 Difference]: Start difference. First operand has 190 places, 282 transitions, 3831 flow. Second operand 9 states and 195 transitions. [2024-06-27 19:02:35,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 340 transitions, 4859 flow [2024-06-27 19:02:36,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 340 transitions, 4753 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:36,036 INFO L231 Difference]: Finished difference. Result has 195 places, 290 transitions, 3942 flow [2024-06-27 19:02:36,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3942, PETRI_PLACES=195, PETRI_TRANSITIONS=290} [2024-06-27 19:02:36,037 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-06-27 19:02:36,037 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 290 transitions, 3942 flow [2024-06-27 19:02:36,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:36,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:36,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:36,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:02:36,038 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:36,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1320337467, now seen corresponding path program 3 times [2024-06-27 19:02:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:36,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489047861] [2024-06-27 19:02:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:36,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489047861] [2024-06-27 19:02:38,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489047861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:38,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:38,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053689818] [2024-06-27 19:02:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:38,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:38,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:38,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:02:38,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 290 transitions, 3942 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) [2024-06-27 19:02:38,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:38,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:02:38,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:40,790 INFO L124 PetriNetUnfolderBase]: 5141/8056 cut-off events. [2024-06-27 19:02:40,790 INFO L125 PetriNetUnfolderBase]: For 195949/195961 co-relation queries the response was YES. [2024-06-27 19:02:40,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55519 conditions, 8056 events. 5141/8056 cut-off events. For 195949/195961 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 49333 event pairs, 1283 based on Foata normal form. 16/7910 useless extension candidates. Maximal degree in co-relation 55422. Up to 6892 conditions per place. [2024-06-27 19:02:40,882 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 272 selfloop transitions, 39 changer transitions 0/339 dead transitions. [2024-06-27 19:02:40,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 339 transitions, 4898 flow [2024-06-27 19:02:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 19:02:40,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 19:02:40,883 INFO L175 Difference]: Start difference. First operand has 195 places, 290 transitions, 3942 flow. Second operand 8 states and 187 transitions. [2024-06-27 19:02:40,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 339 transitions, 4898 flow [2024-06-27 19:02:41,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 339 transitions, 4767 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:41,297 INFO L231 Difference]: Finished difference. Result has 198 places, 293 transitions, 3956 flow [2024-06-27 19:02:41,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3956, PETRI_PLACES=198, PETRI_TRANSITIONS=293} [2024-06-27 19:02:41,298 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-27 19:02:41,298 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 293 transitions, 3956 flow [2024-06-27 19:02:41,298 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) [2024-06-27 19:02:41,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:41,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:41,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:02:41,298 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:41,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2004961103, now seen corresponding path program 3 times [2024-06-27 19:02:41,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:41,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137149873] [2024-06-27 19:02:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137149873] [2024-06-27 19:02:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137149873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:43,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:43,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200818412] [2024-06-27 19:02:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:43,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:43,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:02:43,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 293 transitions, 3956 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:43,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:43,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:02:43,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:46,097 INFO L124 PetriNetUnfolderBase]: 5552/8572 cut-off events. [2024-06-27 19:02:46,097 INFO L125 PetriNetUnfolderBase]: For 218370/218370 co-relation queries the response was YES. [2024-06-27 19:02:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60187 conditions, 8572 events. 5552/8572 cut-off events. For 218370/218370 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 52362 event pairs, 2443 based on Foata normal form. 2/8411 useless extension candidates. Maximal degree in co-relation 60088. Up to 7858 conditions per place. [2024-06-27 19:02:46,185 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 318 selfloop transitions, 32 changer transitions 0/357 dead transitions. [2024-06-27 19:02:46,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 357 transitions, 5196 flow [2024-06-27 19:02:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:02:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:02:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 19:02:46,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-06-27 19:02:46,188 INFO L175 Difference]: Start difference. First operand has 198 places, 293 transitions, 3956 flow. Second operand 9 states and 192 transitions. [2024-06-27 19:02:46,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 357 transitions, 5196 flow [2024-06-27 19:02:46,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 357 transitions, 5101 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 19:02:46,589 INFO L231 Difference]: Finished difference. Result has 204 places, 314 transitions, 4292 flow [2024-06-27 19:02:46,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3861, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4292, PETRI_PLACES=204, PETRI_TRANSITIONS=314} [2024-06-27 19:02:46,590 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 151 predicate places. [2024-06-27 19:02:46,590 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 314 transitions, 4292 flow [2024-06-27 19:02:46,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:46,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:46,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:46,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:02:46,590 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:46,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash -402380095, now seen corresponding path program 4 times [2024-06-27 19:02:46,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:46,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946455537] [2024-06-27 19:02:46,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:46,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946455537] [2024-06-27 19:02:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946455537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:48,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926459020] [2024-06-27 19:02:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:48,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:02:48,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 314 transitions, 4292 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:48,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:48,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:02:48,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:51,113 INFO L124 PetriNetUnfolderBase]: 5621/8659 cut-off events. [2024-06-27 19:02:51,114 INFO L125 PetriNetUnfolderBase]: For 230374/230374 co-relation queries the response was YES. [2024-06-27 19:02:51,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62718 conditions, 8659 events. 5621/8659 cut-off events. For 230374/230374 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 52822 event pairs, 2446 based on Foata normal form. 2/8498 useless extension candidates. Maximal degree in co-relation 62615. Up to 7909 conditions per place. [2024-06-27 19:02:51,202 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 328 selfloop transitions, 58 changer transitions 0/393 dead transitions. [2024-06-27 19:02:51,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 393 transitions, 5902 flow [2024-06-27 19:02:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:02:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:02:51,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 19:02:51,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-06-27 19:02:51,203 INFO L175 Difference]: Start difference. First operand has 204 places, 314 transitions, 4292 flow. Second operand 9 states and 192 transitions. [2024-06-27 19:02:51,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 393 transitions, 5902 flow [2024-06-27 19:02:51,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 393 transitions, 5744 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-27 19:02:51,577 INFO L231 Difference]: Finished difference. Result has 213 places, 350 transitions, 4980 flow [2024-06-27 19:02:51,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4980, PETRI_PLACES=213, PETRI_TRANSITIONS=350} [2024-06-27 19:02:51,577 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-06-27 19:02:51,577 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 350 transitions, 4980 flow [2024-06-27 19:02:51,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:51,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:51,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:51,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:02:51,578 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:51,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -402380219, now seen corresponding path program 4 times [2024-06-27 19:02:51,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:51,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670880470] [2024-06-27 19:02:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:51,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:53,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670880470] [2024-06-27 19:02:53,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670880470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:53,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:53,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326503769] [2024-06-27 19:02:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:53,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:53,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:02:53,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 350 transitions, 4980 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) [2024-06-27 19:02:53,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:53,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:02:53,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:56,336 INFO L124 PetriNetUnfolderBase]: 5565/8698 cut-off events. [2024-06-27 19:02:56,336 INFO L125 PetriNetUnfolderBase]: For 244254/244258 co-relation queries the response was YES. [2024-06-27 19:02:56,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63798 conditions, 8698 events. 5565/8698 cut-off events. For 244254/244258 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 53613 event pairs, 1422 based on Foata normal form. 14/8543 useless extension candidates. Maximal degree in co-relation 63690. Up to 7445 conditions per place. [2024-06-27 19:02:56,450 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 314 selfloop transitions, 39 changer transitions 0/396 dead transitions. [2024-06-27 19:02:56,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 396 transitions, 6093 flow [2024-06-27 19:02:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:56,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 19:02:56,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-06-27 19:02:56,465 INFO L175 Difference]: Start difference. First operand has 213 places, 350 transitions, 4980 flow. Second operand 8 states and 182 transitions. [2024-06-27 19:02:56,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 396 transitions, 6093 flow [2024-06-27 19:02:57,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 396 transitions, 5813 flow, removed 129 selfloop flow, removed 4 redundant places. [2024-06-27 19:02:57,213 INFO L231 Difference]: Finished difference. Result has 217 places, 353 transitions, 4914 flow [2024-06-27 19:02:57,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4734, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4914, PETRI_PLACES=217, PETRI_TRANSITIONS=353} [2024-06-27 19:02:57,213 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-06-27 19:02:57,213 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 353 transitions, 4914 flow [2024-06-27 19:02:57,214 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) [2024-06-27 19:02:57,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:57,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:57,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:02:57,214 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:57,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash -402375445, now seen corresponding path program 5 times [2024-06-27 19:02:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175800725] [2024-06-27 19:02:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:59,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:59,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175800725] [2024-06-27 19:02:59,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175800725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:59,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:59,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:59,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667513652] [2024-06-27 19:02:59,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:59,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:59,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:59,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:59,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:02:59,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 353 transitions, 4914 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:59,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:59,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:02:59,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:02,020 INFO L124 PetriNetUnfolderBase]: 5855/9012 cut-off events. [2024-06-27 19:03:02,020 INFO L125 PetriNetUnfolderBase]: For 256829/256829 co-relation queries the response was YES. [2024-06-27 19:03:02,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66999 conditions, 9012 events. 5855/9012 cut-off events. For 256829/256829 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 55374 event pairs, 2524 based on Foata normal form. 2/8846 useless extension candidates. Maximal degree in co-relation 66890. Up to 8304 conditions per place. [2024-06-27 19:03:02,145 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 351 selfloop transitions, 51 changer transitions 0/409 dead transitions. [2024-06-27 19:03:02,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 409 transitions, 6115 flow [2024-06-27 19:03:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:03:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:03:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 19:03:02,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2024-06-27 19:03:02,147 INFO L175 Difference]: Start difference. First operand has 217 places, 353 transitions, 4914 flow. Second operand 8 states and 173 transitions. [2024-06-27 19:03:02,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 409 transitions, 6115 flow [2024-06-27 19:03:02,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 409 transitions, 5981 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 19:03:02,732 INFO L231 Difference]: Finished difference. Result has 221 places, 368 transitions, 5200 flow [2024-06-27 19:03:02,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4780, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5200, PETRI_PLACES=221, PETRI_TRANSITIONS=368} [2024-06-27 19:03:02,733 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-06-27 19:03:02,733 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 368 transitions, 5200 flow [2024-06-27 19:03:02,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:02,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:02,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:02,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:03:02,733 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:02,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2041078481, now seen corresponding path program 1 times [2024-06-27 19:03:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:02,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315571181] [2024-06-27 19:03:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:04,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:04,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315571181] [2024-06-27 19:03:04,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315571181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:04,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:04,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172383512] [2024-06-27 19:03:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:04,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:04,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:04,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:04,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 368 transitions, 5200 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:04,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:04,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:04,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:07,410 INFO L124 PetriNetUnfolderBase]: 5893/9262 cut-off events. [2024-06-27 19:03:07,411 INFO L125 PetriNetUnfolderBase]: For 247466/247466 co-relation queries the response was YES. [2024-06-27 19:03:07,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66880 conditions, 9262 events. 5893/9262 cut-off events. For 247466/247466 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 57722 event pairs, 1158 based on Foata normal form. 2/9028 useless extension candidates. Maximal degree in co-relation 66768. Up to 8228 conditions per place. [2024-06-27 19:03:07,527 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 364 selfloop transitions, 38 changer transitions 0/409 dead transitions. [2024-06-27 19:03:07,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 409 transitions, 6437 flow [2024-06-27 19:03:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:03:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:03:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 19:03:07,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 19:03:07,529 INFO L175 Difference]: Start difference. First operand has 221 places, 368 transitions, 5200 flow. Second operand 6 states and 140 transitions. [2024-06-27 19:03:07,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 409 transitions, 6437 flow [2024-06-27 19:03:08,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 409 transitions, 6276 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 19:03:08,119 INFO L231 Difference]: Finished difference. Result has 224 places, 373 transitions, 5263 flow [2024-06-27 19:03:08,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5039, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5263, PETRI_PLACES=224, PETRI_TRANSITIONS=373} [2024-06-27 19:03:08,119 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-06-27 19:03:08,120 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 373 transitions, 5263 flow [2024-06-27 19:03:08,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:08,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:08,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:08,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:03:08,120 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:08,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1828446433, now seen corresponding path program 2 times [2024-06-27 19:03:08,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:08,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127204347] [2024-06-27 19:03:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:10,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:10,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127204347] [2024-06-27 19:03:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127204347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:10,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:10,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:10,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724797630] [2024-06-27 19:03:10,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:10,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:10,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:10,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:10,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 373 transitions, 5263 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:10,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:10,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:10,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:13,209 INFO L124 PetriNetUnfolderBase]: 5888/9261 cut-off events. [2024-06-27 19:03:13,209 INFO L125 PetriNetUnfolderBase]: For 252020/252020 co-relation queries the response was YES. [2024-06-27 19:03:13,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67057 conditions, 9261 events. 5888/9261 cut-off events. For 252020/252020 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 58080 event pairs, 1440 based on Foata normal form. 2/9025 useless extension candidates. Maximal degree in co-relation 66943. Up to 8335 conditions per place. [2024-06-27 19:03:13,328 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 358 selfloop transitions, 38 changer transitions 0/403 dead transitions. [2024-06-27 19:03:13,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 403 transitions, 6273 flow [2024-06-27 19:03:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:03:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:03:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 19:03:13,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-27 19:03:13,329 INFO L175 Difference]: Start difference. First operand has 224 places, 373 transitions, 5263 flow. Second operand 6 states and 135 transitions. [2024-06-27 19:03:13,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 403 transitions, 6273 flow [2024-06-27 19:03:14,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 403 transitions, 6171 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-27 19:03:14,041 INFO L231 Difference]: Finished difference. Result has 228 places, 374 transitions, 5262 flow [2024-06-27 19:03:14,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5169, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5262, PETRI_PLACES=228, PETRI_TRANSITIONS=374} [2024-06-27 19:03:14,043 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-06-27 19:03:14,043 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 374 transitions, 5262 flow [2024-06-27 19:03:14,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:14,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:14,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:14,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:03:14,043 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:14,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1087176700, now seen corresponding path program 1 times [2024-06-27 19:03:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536151475] [2024-06-27 19:03:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:14,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:16,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:16,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536151475] [2024-06-27 19:03:16,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536151475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:16,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:16,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:16,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441843717] [2024-06-27 19:03:16,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:16,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:16,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:16,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 374 transitions, 5262 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:16,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:16,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:16,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:18,970 INFO L124 PetriNetUnfolderBase]: 5916/9107 cut-off events. [2024-06-27 19:03:18,970 INFO L125 PetriNetUnfolderBase]: For 253585/253585 co-relation queries the response was YES. [2024-06-27 19:03:19,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67226 conditions, 9107 events. 5916/9107 cut-off events. For 253585/253585 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 55903 event pairs, 1296 based on Foata normal form. 1/8935 useless extension candidates. Maximal degree in co-relation 67110. Up to 8320 conditions per place. [2024-06-27 19:03:19,087 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 359 selfloop transitions, 42 changer transitions 0/408 dead transitions. [2024-06-27 19:03:19,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 408 transitions, 6380 flow [2024-06-27 19:03:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:03:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:03:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 19:03:19,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-27 19:03:19,089 INFO L175 Difference]: Start difference. First operand has 228 places, 374 transitions, 5262 flow. Second operand 6 states and 139 transitions. [2024-06-27 19:03:19,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 408 transitions, 6380 flow [2024-06-27 19:03:19,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 408 transitions, 6308 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:03:19,736 INFO L231 Difference]: Finished difference. Result has 231 places, 380 transitions, 5516 flow [2024-06-27 19:03:19,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5516, PETRI_PLACES=231, PETRI_TRANSITIONS=380} [2024-06-27 19:03:19,736 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 178 predicate places. [2024-06-27 19:03:19,737 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 380 transitions, 5516 flow [2024-06-27 19:03:19,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:19,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:19,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:19,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:03:19,737 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:19,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 345103712, now seen corresponding path program 1 times [2024-06-27 19:03:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37966226] [2024-06-27 19:03:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37966226] [2024-06-27 19:03:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37966226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442104133] [2024-06-27 19:03:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:21,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:21,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 380 transitions, 5516 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:21,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:21,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:21,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:24,522 INFO L124 PetriNetUnfolderBase]: 6116/9412 cut-off events. [2024-06-27 19:03:24,523 INFO L125 PetriNetUnfolderBase]: For 285826/285826 co-relation queries the response was YES. [2024-06-27 19:03:24,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71476 conditions, 9412 events. 6116/9412 cut-off events. For 285826/285826 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 58166 event pairs, 1923 based on Foata normal form. 4/9242 useless extension candidates. Maximal degree in co-relation 71358. Up to 8582 conditions per place. [2024-06-27 19:03:24,645 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 392 selfloop transitions, 39 changer transitions 0/438 dead transitions. [2024-06-27 19:03:24,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 438 transitions, 7046 flow [2024-06-27 19:03:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:03:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:03:24,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 19:03:24,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 19:03:24,647 INFO L175 Difference]: Start difference. First operand has 231 places, 380 transitions, 5516 flow. Second operand 7 states and 161 transitions. [2024-06-27 19:03:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 438 transitions, 7046 flow [2024-06-27 19:03:25,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 438 transitions, 6924 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-27 19:03:25,444 INFO L231 Difference]: Finished difference. Result has 238 places, 398 transitions, 5975 flow [2024-06-27 19:03:25,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5394, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5975, PETRI_PLACES=238, PETRI_TRANSITIONS=398} [2024-06-27 19:03:25,445 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-27 19:03:25,445 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 398 transitions, 5975 flow [2024-06-27 19:03:25,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:25,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:25,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:03:25,446 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:25,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash 345103340, now seen corresponding path program 2 times [2024-06-27 19:03:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:25,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571790197] [2024-06-27 19:03:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:25,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:28,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:28,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571790197] [2024-06-27 19:03:28,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571790197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:28,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:28,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:28,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495000964] [2024-06-27 19:03:28,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:28,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:28,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 398 transitions, 5975 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:28,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:28,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:28,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:30,625 INFO L124 PetriNetUnfolderBase]: 6121/9367 cut-off events. [2024-06-27 19:03:30,626 INFO L125 PetriNetUnfolderBase]: For 297545/297545 co-relation queries the response was YES. [2024-06-27 19:03:30,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73044 conditions, 9367 events. 6121/9367 cut-off events. For 297545/297545 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 57543 event pairs, 1946 based on Foata normal form. 1/9212 useless extension candidates. Maximal degree in co-relation 72922. Up to 8572 conditions per place. [2024-06-27 19:03:30,751 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 382 selfloop transitions, 47 changer transitions 0/436 dead transitions. [2024-06-27 19:03:30,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 436 transitions, 7121 flow [2024-06-27 19:03:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:03:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:03:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 19:03:30,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-27 19:03:30,766 INFO L175 Difference]: Start difference. First operand has 238 places, 398 transitions, 5975 flow. Second operand 7 states and 158 transitions. [2024-06-27 19:03:30,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 436 transitions, 7121 flow [2024-06-27 19:03:31,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 436 transitions, 7008 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 19:03:31,706 INFO L231 Difference]: Finished difference. Result has 242 places, 401 transitions, 6069 flow [2024-06-27 19:03:31,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5862, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6069, PETRI_PLACES=242, PETRI_TRANSITIONS=401} [2024-06-27 19:03:31,707 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 189 predicate places. [2024-06-27 19:03:31,707 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 401 transitions, 6069 flow [2024-06-27 19:03:31,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:31,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:31,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:31,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:03:31,707 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:31,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash 303514196, now seen corresponding path program 2 times [2024-06-27 19:03:31,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:31,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495545805] [2024-06-27 19:03:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:31,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:33,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:33,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495545805] [2024-06-27 19:03:33,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495545805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:33,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:33,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249559090] [2024-06-27 19:03:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:33,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:33,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:33,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 401 transitions, 6069 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:33,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:33,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:33,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:37,044 INFO L124 PetriNetUnfolderBase]: 6568/10284 cut-off events. [2024-06-27 19:03:37,044 INFO L125 PetriNetUnfolderBase]: For 351401/351401 co-relation queries the response was YES. [2024-06-27 19:03:37,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81143 conditions, 10284 events. 6568/10284 cut-off events. For 351401/351401 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 64982 event pairs, 1431 based on Foata normal form. 4/10028 useless extension candidates. Maximal degree in co-relation 81020. Up to 8641 conditions per place. [2024-06-27 19:03:37,161 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 370 selfloop transitions, 119 changer transitions 0/496 dead transitions. [2024-06-27 19:03:37,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 496 transitions, 8389 flow [2024-06-27 19:03:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:03:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:03:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 19:03:37,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 19:03:37,163 INFO L175 Difference]: Start difference. First operand has 242 places, 401 transitions, 6069 flow. Second operand 8 states and 193 transitions. [2024-06-27 19:03:37,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 496 transitions, 8389 flow [2024-06-27 19:03:37,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 496 transitions, 8246 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 19:03:37,956 INFO L231 Difference]: Finished difference. Result has 247 places, 437 transitions, 7096 flow [2024-06-27 19:03:37,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5932, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7096, PETRI_PLACES=247, PETRI_TRANSITIONS=437} [2024-06-27 19:03:37,958 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 194 predicate places. [2024-06-27 19:03:37,958 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 437 transitions, 7096 flow [2024-06-27 19:03:37,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:37,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:37,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:37,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:03:37,958 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:37,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:37,959 INFO L85 PathProgramCache]: Analyzing trace with hash 521312672, now seen corresponding path program 3 times [2024-06-27 19:03:37,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:37,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19194261] [2024-06-27 19:03:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:37,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:40,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19194261] [2024-06-27 19:03:40,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19194261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:40,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:40,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:40,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064110999] [2024-06-27 19:03:40,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:40,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:40,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:40,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 437 transitions, 7096 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:40,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:40,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:40,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:43,569 INFO L124 PetriNetUnfolderBase]: 7020/10944 cut-off events. [2024-06-27 19:03:43,570 INFO L125 PetriNetUnfolderBase]: For 424353/424353 co-relation queries the response was YES. [2024-06-27 19:03:43,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92252 conditions, 10944 events. 7020/10944 cut-off events. For 424353/424353 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 69422 event pairs, 1426 based on Foata normal form. 5/10682 useless extension candidates. Maximal degree in co-relation 92127. Up to 8894 conditions per place. [2024-06-27 19:03:43,711 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 388 selfloop transitions, 137 changer transitions 0/532 dead transitions. [2024-06-27 19:03:43,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 532 transitions, 9688 flow [2024-06-27 19:03:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:03:43,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:03:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 19:03:43,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 19:03:43,715 INFO L175 Difference]: Start difference. First operand has 247 places, 437 transitions, 7096 flow. Second operand 9 states and 212 transitions. [2024-06-27 19:03:43,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 532 transitions, 9688 flow [2024-06-27 19:03:44,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 532 transitions, 9468 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-27 19:03:44,877 INFO L231 Difference]: Finished difference. Result has 254 places, 465 transitions, 8117 flow [2024-06-27 19:03:44,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6946, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8117, PETRI_PLACES=254, PETRI_TRANSITIONS=465} [2024-06-27 19:03:44,877 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 201 predicate places. [2024-06-27 19:03:44,878 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 465 transitions, 8117 flow [2024-06-27 19:03:44,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:44,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:44,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:44,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:03:44,879 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:44,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash 521557789, now seen corresponding path program 1 times [2024-06-27 19:03:44,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:44,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806168394] [2024-06-27 19:03:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:44,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:47,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806168394] [2024-06-27 19:03:47,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806168394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:47,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:47,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:03:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022603081] [2024-06-27 19:03:47,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:47,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:03:47,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:03:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:03:47,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:47,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 465 transitions, 8117 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:47,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:47,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:47,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:51,232 INFO L124 PetriNetUnfolderBase]: 7232/11332 cut-off events. [2024-06-27 19:03:51,232 INFO L125 PetriNetUnfolderBase]: For 465429/465429 co-relation queries the response was YES. [2024-06-27 19:03:51,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98161 conditions, 11332 events. 7232/11332 cut-off events. For 465429/465429 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 72849 event pairs, 1554 based on Foata normal form. 12/11050 useless extension candidates. Maximal degree in co-relation 98032. Up to 9853 conditions per place. [2024-06-27 19:03:51,401 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 449 selfloop transitions, 53 changer transitions 0/509 dead transitions. [2024-06-27 19:03:51,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 509 transitions, 9578 flow [2024-06-27 19:03:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:03:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:03:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 19:03:51,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 19:03:51,403 INFO L175 Difference]: Start difference. First operand has 254 places, 465 transitions, 8117 flow. Second operand 7 states and 163 transitions. [2024-06-27 19:03:51,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 509 transitions, 9578 flow [2024-06-27 19:03:53,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 509 transitions, 9238 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-06-27 19:03:53,078 INFO L231 Difference]: Finished difference. Result has 256 places, 466 transitions, 7911 flow [2024-06-27 19:03:53,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7777, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7911, PETRI_PLACES=256, PETRI_TRANSITIONS=466} [2024-06-27 19:03:53,079 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 203 predicate places. [2024-06-27 19:03:53,079 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 466 transitions, 7911 flow [2024-06-27 19:03:53,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:53,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:53,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:03:53,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:03:53,080 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:03:53,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2031450134, now seen corresponding path program 4 times [2024-06-27 19:03:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303895181] [2024-06-27 19:03:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:53,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:03:55,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:55,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303895181] [2024-06-27 19:03:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303895181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:55,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:55,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:03:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024584673] [2024-06-27 19:03:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:03:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:03:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:03:55,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:03:55,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 466 transitions, 7911 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:03:55,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:55,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:03:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:59,305 INFO L124 PetriNetUnfolderBase]: 7347/11210 cut-off events. [2024-06-27 19:03:59,305 INFO L125 PetriNetUnfolderBase]: For 444717/444717 co-relation queries the response was YES. [2024-06-27 19:03:59,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97528 conditions, 11210 events. 7347/11210 cut-off events. For 444717/444717 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 70209 event pairs, 2318 based on Foata normal form. 4/11021 useless extension candidates. Maximal degree in co-relation 97398. Up to 10299 conditions per place. [2024-06-27 19:03:59,841 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 469 selfloop transitions, 48 changer transitions 0/524 dead transitions. [2024-06-27 19:03:59,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 524 transitions, 9450 flow [2024-06-27 19:03:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:03:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:03:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 19:03:59,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 19:03:59,842 INFO L175 Difference]: Start difference. First operand has 256 places, 466 transitions, 7911 flow. Second operand 8 states and 184 transitions. [2024-06-27 19:03:59,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 524 transitions, 9450 flow [2024-06-27 19:04:00,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 524 transitions, 9350 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 19:04:00,846 INFO L231 Difference]: Finished difference. Result has 260 places, 473 transitions, 8134 flow [2024-06-27 19:04:00,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7811, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8134, PETRI_PLACES=260, PETRI_TRANSITIONS=473} [2024-06-27 19:04:00,847 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-06-27 19:04:00,847 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 473 transitions, 8134 flow [2024-06-27 19:04:00,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:00,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:00,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:00,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:04:00,847 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:00,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:00,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2019485684, now seen corresponding path program 5 times [2024-06-27 19:04:00,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:00,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696997878] [2024-06-27 19:04:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:00,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:03,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:03,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696997878] [2024-06-27 19:04:03,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696997878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:03,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:03,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:04:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001109065] [2024-06-27 19:04:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:03,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:04:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:04:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:04:03,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:04:03,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 473 transitions, 8134 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:03,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:03,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:04:03,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:06,725 INFO L124 PetriNetUnfolderBase]: 7393/11276 cut-off events. [2024-06-27 19:04:06,725 INFO L125 PetriNetUnfolderBase]: For 466265/466265 co-relation queries the response was YES. [2024-06-27 19:04:06,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99623 conditions, 11276 events. 7393/11276 cut-off events. For 466265/466265 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 70586 event pairs, 2302 based on Foata normal form. 2/11087 useless extension candidates. Maximal degree in co-relation 99491. Up to 10331 conditions per place. [2024-06-27 19:04:06,887 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 458 selfloop transitions, 55 changer transitions 0/520 dead transitions. [2024-06-27 19:04:06,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 520 transitions, 9551 flow [2024-06-27 19:04:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:04:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:04:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 19:04:06,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47606382978723405 [2024-06-27 19:04:06,901 INFO L175 Difference]: Start difference. First operand has 260 places, 473 transitions, 8134 flow. Second operand 8 states and 179 transitions. [2024-06-27 19:04:06,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 520 transitions, 9551 flow [2024-06-27 19:04:08,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 520 transitions, 9310 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 19:04:08,230 INFO L231 Difference]: Finished difference. Result has 262 places, 476 transitions, 8117 flow [2024-06-27 19:04:08,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7893, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8117, PETRI_PLACES=262, PETRI_TRANSITIONS=476} [2024-06-27 19:04:08,231 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 209 predicate places. [2024-06-27 19:04:08,231 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 476 transitions, 8117 flow [2024-06-27 19:04:08,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:08,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:08,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:04:08,232 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:08,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1421829408, now seen corresponding path program 6 times [2024-06-27 19:04:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915085579] [2024-06-27 19:04:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:08,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:10,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:10,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915085579] [2024-06-27 19:04:10,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915085579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:10,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:04:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107489776] [2024-06-27 19:04:10,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:10,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:04:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:10,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:04:10,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:04:10,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:04:10,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 476 transitions, 8117 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:10,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:10,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:04:10,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:14,285 INFO L124 PetriNetUnfolderBase]: 7439/11317 cut-off events. [2024-06-27 19:04:14,285 INFO L125 PetriNetUnfolderBase]: For 475813/475813 co-relation queries the response was YES. [2024-06-27 19:04:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100337 conditions, 11317 events. 7439/11317 cut-off events. For 475813/475813 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 70586 event pairs, 2277 based on Foata normal form. 2/11135 useless extension candidates. Maximal degree in co-relation 100205. Up to 10205 conditions per place. [2024-06-27 19:04:14,453 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 449 selfloop transitions, 68 changer transitions 0/524 dead transitions. [2024-06-27 19:04:14,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 524 transitions, 9560 flow [2024-06-27 19:04:14,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:04:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:04:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 19:04:14,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-06-27 19:04:14,455 INFO L175 Difference]: Start difference. First operand has 262 places, 476 transitions, 8117 flow. Second operand 8 states and 182 transitions. [2024-06-27 19:04:14,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 524 transitions, 9560 flow [2024-06-27 19:04:15,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 524 transitions, 9305 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 19:04:15,754 INFO L231 Difference]: Finished difference. Result has 261 places, 479 transitions, 8118 flow [2024-06-27 19:04:15,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7862, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8118, PETRI_PLACES=261, PETRI_TRANSITIONS=479} [2024-06-27 19:04:15,755 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-27 19:04:15,755 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 479 transitions, 8118 flow [2024-06-27 19:04:15,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:15,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:15,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:15,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:04:15,755 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:15,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:15,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1554540586, now seen corresponding path program 7 times [2024-06-27 19:04:15,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:15,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066881181] [2024-06-27 19:04:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066881181] [2024-06-27 19:04:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066881181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:18,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:04:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127227555] [2024-06-27 19:04:18,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:18,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:04:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:04:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:04:18,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:04:18,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 479 transitions, 8118 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:18,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:18,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:04:18,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:23,022 INFO L124 PetriNetUnfolderBase]: 7779/11869 cut-off events. [2024-06-27 19:04:23,022 INFO L125 PetriNetUnfolderBase]: For 530993/530993 co-relation queries the response was YES. [2024-06-27 19:04:23,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107635 conditions, 11869 events. 7779/11869 cut-off events. For 530993/530993 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 74438 event pairs, 1663 based on Foata normal form. 4/11656 useless extension candidates. Maximal degree in co-relation 107504. Up to 10604 conditions per place. [2024-06-27 19:04:23,192 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 496 selfloop transitions, 64 changer transitions 0/567 dead transitions. [2024-06-27 19:04:23,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 567 transitions, 10615 flow [2024-06-27 19:04:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:04:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:04:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 19:04:23,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2024-06-27 19:04:23,193 INFO L175 Difference]: Start difference. First operand has 261 places, 479 transitions, 8118 flow. Second operand 9 states and 203 transitions. [2024-06-27 19:04:23,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 567 transitions, 10615 flow [2024-06-27 19:04:24,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 567 transitions, 10409 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 19:04:24,403 INFO L231 Difference]: Finished difference. Result has 265 places, 505 transitions, 8765 flow [2024-06-27 19:04:24,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7912, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8765, PETRI_PLACES=265, PETRI_TRANSITIONS=505} [2024-06-27 19:04:24,404 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 212 predicate places. [2024-06-27 19:04:24,404 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 505 transitions, 8765 flow [2024-06-27 19:04:24,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:24,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:24,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:24,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:04:24,405 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:24,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash 410852988, now seen corresponding path program 8 times [2024-06-27 19:04:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:24,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256718806] [2024-06-27 19:04:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:24,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256718806] [2024-06-27 19:04:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256718806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:26,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:26,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:04:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564610728] [2024-06-27 19:04:26,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:26,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:04:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:04:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:04:27,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:04:27,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 505 transitions, 8765 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:27,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:27,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:04:27,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:30,987 INFO L124 PetriNetUnfolderBase]: 7958/12434 cut-off events. [2024-06-27 19:04:30,988 INFO L125 PetriNetUnfolderBase]: For 592121/592121 co-relation queries the response was YES. [2024-06-27 19:04:31,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114616 conditions, 12434 events. 7958/12434 cut-off events. For 592121/592121 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 80397 event pairs, 1531 based on Foata normal form. 5/12118 useless extension candidates. Maximal degree in co-relation 114483. Up to 10164 conditions per place. [2024-06-27 19:04:31,174 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 453 selfloop transitions, 133 changer transitions 0/593 dead transitions. [2024-06-27 19:04:31,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 593 transitions, 11598 flow [2024-06-27 19:04:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:04:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:04:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 19:04:31,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 19:04:31,176 INFO L175 Difference]: Start difference. First operand has 265 places, 505 transitions, 8765 flow. Second operand 8 states and 187 transitions. [2024-06-27 19:04:31,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 593 transitions, 11598 flow [2024-06-27 19:04:32,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 593 transitions, 11385 flow, removed 87 selfloop flow, removed 4 redundant places. [2024-06-27 19:04:32,975 INFO L231 Difference]: Finished difference. Result has 270 places, 523 transitions, 9569 flow [2024-06-27 19:04:32,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8574, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9569, PETRI_PLACES=270, PETRI_TRANSITIONS=523} [2024-06-27 19:04:32,976 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-06-27 19:04:32,976 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 523 transitions, 9569 flow [2024-06-27 19:04:32,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:32,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:32,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:32,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:04:32,977 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:32,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 638264028, now seen corresponding path program 9 times [2024-06-27 19:04:32,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:32,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552732221] [2024-06-27 19:04:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:35,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552732221] [2024-06-27 19:04:35,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552732221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:35,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:35,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:04:35,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850477407] [2024-06-27 19:04:35,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:35,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:04:35,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:35,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:04:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:04:35,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:04:35,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 523 transitions, 9569 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:35,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:35,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:04:35,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:39,661 INFO L124 PetriNetUnfolderBase]: 8098/12370 cut-off events. [2024-06-27 19:04:39,661 INFO L125 PetriNetUnfolderBase]: For 623601/623601 co-relation queries the response was YES. [2024-06-27 19:04:39,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118883 conditions, 12370 events. 8098/12370 cut-off events. For 623601/623601 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 78200 event pairs, 1659 based on Foata normal form. 6/12144 useless extension candidates. Maximal degree in co-relation 118747. Up to 11029 conditions per place. [2024-06-27 19:04:39,832 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 522 selfloop transitions, 57 changer transitions 0/586 dead transitions. [2024-06-27 19:04:39,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 586 transitions, 11773 flow [2024-06-27 19:04:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:04:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:04:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 19:04:39,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734042553191489 [2024-06-27 19:04:39,833 INFO L175 Difference]: Start difference. First operand has 270 places, 523 transitions, 9569 flow. Second operand 8 states and 178 transitions. [2024-06-27 19:04:39,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 586 transitions, 11773 flow [2024-06-27 19:04:41,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 586 transitions, 11484 flow, removed 114 selfloop flow, removed 3 redundant places. [2024-06-27 19:04:41,531 INFO L231 Difference]: Finished difference. Result has 277 places, 541 transitions, 9984 flow [2024-06-27 19:04:41,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9326, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9984, PETRI_PLACES=277, PETRI_TRANSITIONS=541} [2024-06-27 19:04:41,532 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 224 predicate places. [2024-06-27 19:04:41,532 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 541 transitions, 9984 flow [2024-06-27 19:04:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:41,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:41,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:41,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:04:41,533 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:41,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash 632520348, now seen corresponding path program 10 times [2024-06-27 19:04:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006223942] [2024-06-27 19:04:41,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:41,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat