./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:55:52,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:55:52,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:55:52,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:55:52,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:55:52,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:55:52,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:55:52,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:55:52,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:55:52,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:55:52,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:55:52,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:55:52,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:55:52,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:55:52,418 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:55:52,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:55:52,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:55:52,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:55:52,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:55:52,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:55:52,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:55:52,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:55:52,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:55:52,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:55:52,420 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:55:52,421 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:55:52,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:55:52,421 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:55:52,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:55:52,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:55:52,421 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:55:52,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:55:52,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:55:52,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:55:52,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:55:52,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:55:52,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:55:52,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:55:52,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:55:52,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:55:52,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:55:52,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:55:52,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:55:52,424 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:55:52,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:55:52,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:55:52,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:55:52,627 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:55:52,628 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:55:52,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 03:55:52,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:55:52,774 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:55:52,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i [2024-06-28 03:55:53,790 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:55:54,010 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:55:54,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i [2024-06-28 03:55:54,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b734dfd9/4c5cb64d2dd744da9f5182fadfbd90d5/FLAGef66b53f2 [2024-06-28 03:55:54,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b734dfd9/4c5cb64d2dd744da9f5182fadfbd90d5 [2024-06-28 03:55:54,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:55:54,044 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:55:54,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:55:54,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:55:54,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:55:54,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:55:52" (1/2) ... [2024-06-28 03:55:54,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781cf85d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:55:54, skipping insertion in model container [2024-06-28 03:55:54,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:55:52" (1/2) ... [2024-06-28 03:55:54,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a943d84 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:55:54, skipping insertion in model container [2024-06-28 03:55:54,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:55:54" (2/2) ... [2024-06-28 03:55:54,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781cf85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54, skipping insertion in model container [2024-06-28 03:55:54,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:55:54" (2/2) ... [2024-06-28 03:55:54,053 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:55:54,128 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:55:54,129 INFO L97 edCorrectnessWitness]: Location invariant before [L815-L815] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0) [2024-06-28 03:55:54,129 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0) [2024-06-28 03:55:54,129 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:55:54,129 INFO L106 edCorrectnessWitness]: ghost_update [L813-L813] multithreaded = 1; [2024-06-28 03:55:54,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:55:54,454 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:55:54,469 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:55:54,616 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:55:54,645 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:55:54,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54 WrapperNode [2024-06-28 03:55:54,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:55:54,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:55:54,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:55:54,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:55:54,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,696 INFO L138 Inliner]: procedures = 174, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2024-06-28 03:55:54,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:55:54,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:55:54,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:55:54,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:55:54,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,723 INFO L175 MemorySlicer]: Split 31 memory accesses to 2 slices as follows [2, 29]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 03:55:54,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:55:54,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:55:54,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:55:54,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:55:54,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (1/1) ... [2024-06-28 03:55:54,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:55:54,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:55:54,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:55:54,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:55:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 03:55:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 03:55:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 03:55:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 03:55:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:55:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:55:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:55:54,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:55:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:55:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:55:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:55:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 03:55:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:55:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:55:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:55:54,796 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:55:54,916 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:55:54,918 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:55:55,311 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:55:55,311 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:55:55,522 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:55:55,523 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:55:55,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:55:55 BoogieIcfgContainer [2024-06-28 03:55:55,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:55:55,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:55:55,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:55:55,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:55:55,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:55:52" (1/4) ... [2024-06-28 03:55:55,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e6e622 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:55:55, skipping insertion in model container [2024-06-28 03:55:55,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:55:54" (2/4) ... [2024-06-28 03:55:55,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e6e622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:55:55, skipping insertion in model container [2024-06-28 03:55:55,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:55:54" (3/4) ... [2024-06-28 03:55:55,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e6e622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:55:55, skipping insertion in model container [2024-06-28 03:55:55,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:55:55" (4/4) ... [2024-06-28 03:55:55,532 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i [2024-06-28 03:55:55,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:55:55,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:55:55,546 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:55:55,587 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:55:55,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:55:55,628 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 03:55:55,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:55:55,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:55:55,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:55:55,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 03:55:55,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:55:55,644 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;@7e0a2e8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:55:55,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:55:55,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:55:55,647 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:55:55,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:55:55,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:55,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:55:55,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:55:55,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash 554647105, now seen corresponding path program 1 times [2024-06-28 03:55:55,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:55,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627510398] [2024-06-28 03:55:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:55,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:57,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:57,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627510398] [2024-06-28 03:55:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627510398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:57,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:57,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:55:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233263694] [2024-06-28 03:55:57,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:57,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:55:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:55:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:55:57,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:55:57,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:57,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:57,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:55:57,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:57,282 INFO L124 PetriNetUnfolderBase]: 113/223 cut-off events. [2024-06-28 03:55:57,283 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 03:55:57,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 223 events. 113/223 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 787 event pairs, 61 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 440. Up to 206 conditions per place. [2024-06-28 03:55:57,287 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 03:55:57,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 115 flow [2024-06-28 03:55:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:55:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:55:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-06-28 03:55:57,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-28 03:55:57,297 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 47 transitions. [2024-06-28 03:55:57,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 115 flow [2024-06-28 03:55:57,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:55:57,300 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 03:55:57,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-28 03:55:57,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 03:55:57,304 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 03:55:57,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:57,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:57,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:55:57,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:55:57,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash 440165810, now seen corresponding path program 1 times [2024-06-28 03:55:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:57,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547260065] [2024-06-28 03:55:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:57,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547260065] [2024-06-28 03:55:59,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547260065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:59,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:59,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:55:59,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433586329] [2024-06-28 03:55:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:55:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:55:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:55:59,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:55:59,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:59,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:59,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:55:59,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:59,424 INFO L124 PetriNetUnfolderBase]: 110/217 cut-off events. [2024-06-28 03:55:59,424 INFO L125 PetriNetUnfolderBase]: For 44/47 co-relation queries the response was YES. [2024-06-28 03:55:59,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 217 events. 110/217 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 760 event pairs, 46 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 494. Up to 190 conditions per place. [2024-06-28 03:55:59,426 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-28 03:55:59,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 161 flow [2024-06-28 03:55:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:55:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:55:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-28 03:55:59,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 03:55:59,428 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-28 03:55:59,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 161 flow [2024-06-28 03:55:59,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:55:59,429 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 03:55:59,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 03:55:59,430 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 03:55:59,430 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 03:55:59,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:59,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:59,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:59,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:55:59,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:55:59,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:59,431 INFO L85 PathProgramCache]: Analyzing trace with hash 760239558, now seen corresponding path program 1 times [2024-06-28 03:55:59,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:59,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932772324] [2024-06-28 03:55:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:59,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932772324] [2024-06-28 03:56:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932772324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:01,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:01,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:56:01,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437366917] [2024-06-28 03:56:01,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:01,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:56:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:56:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:56:01,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:56:01,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:01,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:01,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:56:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:01,402 INFO L124 PetriNetUnfolderBase]: 125/242 cut-off events. [2024-06-28 03:56:01,403 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-06-28 03:56:01,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 242 events. 125/242 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 827 event pairs, 37 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 618. Up to 205 conditions per place. [2024-06-28 03:56:01,405 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2024-06-28 03:56:01,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 235 flow [2024-06-28 03:56:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-28 03:56:01,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-28 03:56:01,406 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 71 transitions. [2024-06-28 03:56:01,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 235 flow [2024-06-28 03:56:01,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 224 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:56:01,408 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 137 flow [2024-06-28 03:56:01,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-28 03:56:01,409 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-28 03:56:01,409 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 137 flow [2024-06-28 03:56:01,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:01,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:01,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:56:01,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:01,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1271335721, now seen corresponding path program 1 times [2024-06-28 03:56:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:01,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353000573] [2024-06-28 03:56:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:03,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353000573] [2024-06-28 03:56:03,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353000573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:03,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:03,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:56:03,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819787732] [2024-06-28 03:56:03,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:03,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:56:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:03,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:56:03,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:56:03,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:56:03,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:03,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:03,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:56:03,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:03,775 INFO L124 PetriNetUnfolderBase]: 121/234 cut-off events. [2024-06-28 03:56:03,775 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-06-28 03:56:03,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 234 events. 121/234 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 796 event pairs, 18 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 674. Up to 175 conditions per place. [2024-06-28 03:56:03,778 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-28 03:56:03,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 257 flow [2024-06-28 03:56:03,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-28 03:56:03,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 03:56:03,782 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 137 flow. Second operand 6 states and 78 transitions. [2024-06-28 03:56:03,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 257 flow [2024-06-28 03:56:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 03:56:03,785 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 149 flow [2024-06-28 03:56:03,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-06-28 03:56:03,786 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-28 03:56:03,786 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 149 flow [2024-06-28 03:56:03,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:03,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:03,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:03,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:56:03,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:03,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash -597253882, now seen corresponding path program 1 times [2024-06-28 03:56:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:03,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658150466] [2024-06-28 03:56:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:03,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:05,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658150466] [2024-06-28 03:56:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658150466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:05,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:05,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:56:05,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391772025] [2024-06-28 03:56:05,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:05,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:56:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:56:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:56:05,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:05,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:05,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:05,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:05,638 INFO L124 PetriNetUnfolderBase]: 117/228 cut-off events. [2024-06-28 03:56:05,639 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-06-28 03:56:05,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 228 events. 117/228 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 762 event pairs, 32 based on Foata normal form. 2/230 useless extension candidates. Maximal degree in co-relation 707. Up to 204 conditions per place. [2024-06-28 03:56:05,641 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-06-28 03:56:05,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 245 flow [2024-06-28 03:56:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-28 03:56:05,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-28 03:56:05,643 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 149 flow. Second operand 5 states and 56 transitions. [2024-06-28 03:56:05,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 245 flow [2024-06-28 03:56:05,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 224 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:05,650 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 157 flow [2024-06-28 03:56:05,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2024-06-28 03:56:05,652 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-28 03:56:05,656 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 157 flow [2024-06-28 03:56:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:05,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:05,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:56:05,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:05,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2038511861, now seen corresponding path program 1 times [2024-06-28 03:56:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:05,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470020476] [2024-06-28 03:56:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:08,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:08,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470020476] [2024-06-28 03:56:08,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470020476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:08,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:08,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:08,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612217355] [2024-06-28 03:56:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:08,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:08,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:08,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 157 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:08,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:08,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:08,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:08,802 INFO L124 PetriNetUnfolderBase]: 120/235 cut-off events. [2024-06-28 03:56:08,802 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-06-28 03:56:08,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 235 events. 120/235 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 820 event pairs, 31 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 748. Up to 181 conditions per place. [2024-06-28 03:56:08,805 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2024-06-28 03:56:08,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 329 flow [2024-06-28 03:56:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 03:56:08,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-28 03:56:08,807 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 157 flow. Second operand 7 states and 82 transitions. [2024-06-28 03:56:08,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 329 flow [2024-06-28 03:56:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 316 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:08,809 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 201 flow [2024-06-28 03:56:08,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-28 03:56:08,812 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-28 03:56:08,812 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 201 flow [2024-06-28 03:56:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:08,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:08,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:08,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:56:08,813 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:08,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1387311885, now seen corresponding path program 2 times [2024-06-28 03:56:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:08,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982521215] [2024-06-28 03:56:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:08,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:10,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:10,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982521215] [2024-06-28 03:56:10,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982521215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:10,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:10,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:10,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697730858] [2024-06-28 03:56:10,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:10,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:10,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:10,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:10,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:10,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:10,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:10,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:11,600 INFO L124 PetriNetUnfolderBase]: 126/247 cut-off events. [2024-06-28 03:56:11,601 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-06-28 03:56:11,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 247 events. 126/247 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 870 event pairs, 31 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 853. Up to 205 conditions per place. [2024-06-28 03:56:11,602 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-28 03:56:11,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 357 flow [2024-06-28 03:56:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-28 03:56:11,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-28 03:56:11,617 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 201 flow. Second operand 7 states and 76 transitions. [2024-06-28 03:56:11,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 357 flow [2024-06-28 03:56:11,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 338 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:11,620 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 245 flow [2024-06-28 03:56:11,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-28 03:56:11,621 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-28 03:56:11,621 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 245 flow [2024-06-28 03:56:11,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:11,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:11,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:11,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:56:11,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:11,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:11,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2038391705, now seen corresponding path program 1 times [2024-06-28 03:56:11,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:11,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019167925] [2024-06-28 03:56:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:11,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:13,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019167925] [2024-06-28 03:56:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019167925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:13,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:13,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028678192] [2024-06-28 03:56:13,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:13,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:13,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:13,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:13,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:13,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:13,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:13,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:14,175 INFO L124 PetriNetUnfolderBase]: 142/273 cut-off events. [2024-06-28 03:56:14,175 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-28 03:56:14,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 273 events. 142/273 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 979 event pairs, 33 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 981. Up to 219 conditions per place. [2024-06-28 03:56:14,194 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2024-06-28 03:56:14,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 427 flow [2024-06-28 03:56:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:56:14,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:56:14,197 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 245 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:56:14,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 427 flow [2024-06-28 03:56:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 398 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:14,200 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 271 flow [2024-06-28 03:56:14,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-28 03:56:14,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-28 03:56:14,201 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 271 flow [2024-06-28 03:56:14,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:14,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:14,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:14,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:56:14,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:14,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1411323721, now seen corresponding path program 2 times [2024-06-28 03:56:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:14,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89548504] [2024-06-28 03:56:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:14,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:16,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:16,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89548504] [2024-06-28 03:56:16,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89548504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:16,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:16,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:16,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083409026] [2024-06-28 03:56:16,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:16,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:16,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:16,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:16,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:16,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:16,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:16,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:16,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:16,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:16,436 INFO L124 PetriNetUnfolderBase]: 138/267 cut-off events. [2024-06-28 03:56:16,436 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2024-06-28 03:56:16,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 267 events. 138/267 cut-off events. For 988/988 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 962 event pairs, 32 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 1007. Up to 216 conditions per place. [2024-06-28 03:56:16,438 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2024-06-28 03:56:16,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 407 flow [2024-06-28 03:56:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-28 03:56:16,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:56:16,439 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 271 flow. Second operand 6 states and 69 transitions. [2024-06-28 03:56:16,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 407 flow [2024-06-28 03:56:16,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 384 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:16,441 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 284 flow [2024-06-28 03:56:16,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-28 03:56:16,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-28 03:56:16,442 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 284 flow [2024-06-28 03:56:16,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:16,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:16,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:16,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:56:16,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:16,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:16,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1395473731, now seen corresponding path program 3 times [2024-06-28 03:56:16,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:16,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069409145] [2024-06-28 03:56:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:16,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:18,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:18,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069409145] [2024-06-28 03:56:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069409145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:18,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:18,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533062089] [2024-06-28 03:56:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:18,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:18,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 284 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:18,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:18,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:18,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:18,737 INFO L124 PetriNetUnfolderBase]: 134/262 cut-off events. [2024-06-28 03:56:18,738 INFO L125 PetriNetUnfolderBase]: For 1166/1168 co-relation queries the response was YES. [2024-06-28 03:56:18,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 262 events. 134/262 cut-off events. For 1166/1168 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 944 event pairs, 36 based on Foata normal form. 4/266 useless extension candidates. Maximal degree in co-relation 1019. Up to 196 conditions per place. [2024-06-28 03:56:18,740 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 16 changer transitions 0/56 dead transitions. [2024-06-28 03:56:18,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 422 flow [2024-06-28 03:56:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-28 03:56:18,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-28 03:56:18,742 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 284 flow. Second operand 6 states and 67 transitions. [2024-06-28 03:56:18,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 422 flow [2024-06-28 03:56:18,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 389 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:18,745 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 304 flow [2024-06-28 03:56:18,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-28 03:56:18,746 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-28 03:56:18,746 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 304 flow [2024-06-28 03:56:18,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:18,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:18,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:18,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:56:18,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:18,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1395236395, now seen corresponding path program 3 times [2024-06-28 03:56:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094045829] [2024-06-28 03:56:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:20,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094045829] [2024-06-28 03:56:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094045829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:20,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:20,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96711104] [2024-06-28 03:56:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:20,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:20,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:20,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:20,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:20,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:20,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:20,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:20,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:21,223 INFO L124 PetriNetUnfolderBase]: 132/258 cut-off events. [2024-06-28 03:56:21,223 INFO L125 PetriNetUnfolderBase]: For 1015/1015 co-relation queries the response was YES. [2024-06-28 03:56:21,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 258 events. 132/258 cut-off events. For 1015/1015 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 917 event pairs, 31 based on Foata normal form. 1/259 useless extension candidates. Maximal degree in co-relation 1015. Up to 202 conditions per place. [2024-06-28 03:56:21,225 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2024-06-28 03:56:21,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 458 flow [2024-06-28 03:56:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-28 03:56:21,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-28 03:56:21,226 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 304 flow. Second operand 6 states and 73 transitions. [2024-06-28 03:56:21,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 458 flow [2024-06-28 03:56:21,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 417 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:21,229 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 306 flow [2024-06-28 03:56:21,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-28 03:56:21,229 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-28 03:56:21,229 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 306 flow [2024-06-28 03:56:21,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:21,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:21,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:21,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:56:21,230 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:21,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:21,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1395482659, now seen corresponding path program 1 times [2024-06-28 03:56:21,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:21,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286362281] [2024-06-28 03:56:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:23,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286362281] [2024-06-28 03:56:23,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286362281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:23,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:23,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:23,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077162049] [2024-06-28 03:56:23,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:23,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:23,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:23,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:23,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:23,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 306 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:23,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:23,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:23,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:23,878 INFO L124 PetriNetUnfolderBase]: 129/253 cut-off events. [2024-06-28 03:56:23,878 INFO L125 PetriNetUnfolderBase]: For 1192/1192 co-relation queries the response was YES. [2024-06-28 03:56:23,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 253 events. 129/253 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 865 event pairs, 28 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 1003. Up to 219 conditions per place. [2024-06-28 03:56:23,880 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 45 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-28 03:56:23,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 432 flow [2024-06-28 03:56:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-28 03:56:23,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:56:23,882 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 306 flow. Second operand 6 states and 63 transitions. [2024-06-28 03:56:23,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 432 flow [2024-06-28 03:56:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 398 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:23,884 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 292 flow [2024-06-28 03:56:23,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-06-28 03:56:23,885 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 03:56:23,885 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 292 flow [2024-06-28 03:56:23,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:23,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:23,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:23,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:56:23,886 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:23,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash 53278017, now seen corresponding path program 1 times [2024-06-28 03:56:23,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:23,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227264171] [2024-06-28 03:56:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:23,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:26,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:26,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227264171] [2024-06-28 03:56:26,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227264171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:26,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:26,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:26,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657126479] [2024-06-28 03:56:26,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:26,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:26,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:26,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:26,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:26,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:26,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:26,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:27,027 INFO L124 PetriNetUnfolderBase]: 145/287 cut-off events. [2024-06-28 03:56:27,028 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2024-06-28 03:56:27,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 287 events. 145/287 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1079 event pairs, 31 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 1102. Up to 183 conditions per place. [2024-06-28 03:56:27,030 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 45 selfloop transitions, 26 changer transitions 0/74 dead transitions. [2024-06-28 03:56:27,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 534 flow [2024-06-28 03:56:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:56:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:56:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:56:27,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 03:56:27,032 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 292 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:56:27,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 534 flow [2024-06-28 03:56:27,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 516 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:27,035 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 363 flow [2024-06-28 03:56:27,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2024-06-28 03:56:27,035 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-28 03:56:27,035 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 363 flow [2024-06-28 03:56:27,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:27,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:27,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:27,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:56:27,036 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:27,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash 57002667, now seen corresponding path program 2 times [2024-06-28 03:56:27,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:27,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676790875] [2024-06-28 03:56:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676790875] [2024-06-28 03:56:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676790875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:29,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:29,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284185859] [2024-06-28 03:56:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:29,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:29,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 363 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:29,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:29,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:29,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:30,029 INFO L124 PetriNetUnfolderBase]: 161/315 cut-off events. [2024-06-28 03:56:30,029 INFO L125 PetriNetUnfolderBase]: For 1777/1777 co-relation queries the response was YES. [2024-06-28 03:56:30,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 315 events. 161/315 cut-off events. For 1777/1777 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1222 event pairs, 33 based on Foata normal form. 2/317 useless extension candidates. Maximal degree in co-relation 1318. Up to 234 conditions per place. [2024-06-28 03:56:30,031 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 52 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2024-06-28 03:56:30,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 613 flow [2024-06-28 03:56:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:56:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:56:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:56:30,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-28 03:56:30,033 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 363 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:56:30,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 613 flow [2024-06-28 03:56:30,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 560 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:30,036 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 397 flow [2024-06-28 03:56:30,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=397, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-28 03:56:30,037 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-28 03:56:30,037 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 397 flow [2024-06-28 03:56:30,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:30,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:30,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:30,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:56:30,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:30,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash 106328337, now seen corresponding path program 3 times [2024-06-28 03:56:30,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:30,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212588980] [2024-06-28 03:56:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:30,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:32,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:32,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212588980] [2024-06-28 03:56:32,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212588980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:32,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:32,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:32,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274660011] [2024-06-28 03:56:32,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:32,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:32,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:32,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:32,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:32,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:32,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:32,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:33,087 INFO L124 PetriNetUnfolderBase]: 157/309 cut-off events. [2024-06-28 03:56:33,087 INFO L125 PetriNetUnfolderBase]: For 1845/1845 co-relation queries the response was YES. [2024-06-28 03:56:33,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 309 events. 157/309 cut-off events. For 1845/1845 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1189 event pairs, 32 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 1302. Up to 231 conditions per place. [2024-06-28 03:56:33,089 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 50 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2024-06-28 03:56:33,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 581 flow [2024-06-28 03:56:33,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:56:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:56:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:56:33,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:56:33,091 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 397 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:56:33,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 581 flow [2024-06-28 03:56:33,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 545 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:33,094 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 408 flow [2024-06-28 03:56:33,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=408, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-06-28 03:56:33,095 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-28 03:56:33,095 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 408 flow [2024-06-28 03:56:33,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:33,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:33,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:33,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:56:33,095 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:33,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1209253341, now seen corresponding path program 4 times [2024-06-28 03:56:33,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:33,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520730547] [2024-06-28 03:56:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:33,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520730547] [2024-06-28 03:56:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520730547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:35,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:35,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967341956] [2024-06-28 03:56:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:35,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:35,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:35,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 408 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:35,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:35,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:35,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:36,107 INFO L124 PetriNetUnfolderBase]: 153/306 cut-off events. [2024-06-28 03:56:36,107 INFO L125 PetriNetUnfolderBase]: For 1978/1980 co-relation queries the response was YES. [2024-06-28 03:56:36,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 306 events. 153/306 cut-off events. For 1978/1980 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1198 event pairs, 33 based on Foata normal form. 4/310 useless extension candidates. Maximal degree in co-relation 1303. Up to 176 conditions per place. [2024-06-28 03:56:36,109 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 43 selfloop transitions, 30 changer transitions 0/76 dead transitions. [2024-06-28 03:56:36,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 640 flow [2024-06-28 03:56:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:56:36,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:56:36,111 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 408 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:56:36,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 640 flow [2024-06-28 03:56:36,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 598 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:56:36,114 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 453 flow [2024-06-28 03:56:36,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=453, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-06-28 03:56:36,115 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-28 03:56:36,115 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 453 flow [2024-06-28 03:56:36,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:36,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:36,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:36,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:56:36,116 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:36,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1209051531, now seen corresponding path program 5 times [2024-06-28 03:56:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:36,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326149328] [2024-06-28 03:56:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:38,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:38,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326149328] [2024-06-28 03:56:38,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326149328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:38,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:38,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:38,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185506098] [2024-06-28 03:56:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:38,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:38,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:38,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:38,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 453 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:38,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:38,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:38,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:38,782 INFO L124 PetriNetUnfolderBase]: 159/315 cut-off events. [2024-06-28 03:56:38,782 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2024-06-28 03:56:38,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 315 events. 159/315 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1243 event pairs, 31 based on Foata normal form. 2/317 useless extension candidates. Maximal degree in co-relation 1411. Up to 204 conditions per place. [2024-06-28 03:56:38,785 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 28 changer transitions 0/79 dead transitions. [2024-06-28 03:56:38,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 701 flow [2024-06-28 03:56:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:56:38,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 03:56:38,786 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 453 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:56:38,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 701 flow [2024-06-28 03:56:38,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 626 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:38,792 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 464 flow [2024-06-28 03:56:38,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-28 03:56:38,793 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-28 03:56:38,793 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 464 flow [2024-06-28 03:56:38,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:38,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:38,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:38,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:56:38,794 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:38,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:38,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1209045951, now seen corresponding path program 6 times [2024-06-28 03:56:38,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:38,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443621311] [2024-06-28 03:56:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:40,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:40,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443621311] [2024-06-28 03:56:40,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443621311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:40,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:40,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:40,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807728087] [2024-06-28 03:56:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:40,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:40,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:40,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:40,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:40,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:40,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:40,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:40,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:41,604 INFO L124 PetriNetUnfolderBase]: 155/309 cut-off events. [2024-06-28 03:56:41,605 INFO L125 PetriNetUnfolderBase]: For 2264/2264 co-relation queries the response was YES. [2024-06-28 03:56:41,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 309 events. 155/309 cut-off events. For 2264/2264 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1206 event pairs, 30 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 1358. Up to 201 conditions per place. [2024-06-28 03:56:41,608 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 28 changer transitions 0/80 dead transitions. [2024-06-28 03:56:41,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 666 flow [2024-06-28 03:56:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:56:41,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 03:56:41,610 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 464 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:56:41,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 666 flow [2024-06-28 03:56:41,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 611 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:41,619 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 473 flow [2024-06-28 03:56:41,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=473, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2024-06-28 03:56:41,620 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-28 03:56:41,620 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 473 flow [2024-06-28 03:56:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:41,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:41,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:56:41,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:41,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1648758250, now seen corresponding path program 1 times [2024-06-28 03:56:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165953240] [2024-06-28 03:56:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:41,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165953240] [2024-06-28 03:56:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165953240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:43,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:43,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:43,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035398735] [2024-06-28 03:56:43,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:43,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:43,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:43,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:43,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 473 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:43,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:43,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:43,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:44,557 INFO L124 PetriNetUnfolderBase]: 159/317 cut-off events. [2024-06-28 03:56:44,568 INFO L125 PetriNetUnfolderBase]: For 2314/2314 co-relation queries the response was YES. [2024-06-28 03:56:44,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 317 events. 159/317 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1252 event pairs, 18 based on Foata normal form. 2/319 useless extension candidates. Maximal degree in co-relation 1392. Up to 203 conditions per place. [2024-06-28 03:56:44,570 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 57 selfloop transitions, 20 changer transitions 0/80 dead transitions. [2024-06-28 03:56:44,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 711 flow [2024-06-28 03:56:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:56:44,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-28 03:56:44,585 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 473 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:56:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 711 flow [2024-06-28 03:56:44,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 630 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:56:44,590 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 446 flow [2024-06-28 03:56:44,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-06-28 03:56:44,590 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-28 03:56:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 446 flow [2024-06-28 03:56:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:44,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:44,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:56:44,591 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:44,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1651615210, now seen corresponding path program 2 times [2024-06-28 03:56:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902853076] [2024-06-28 03:56:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:46,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:46,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902853076] [2024-06-28 03:56:46,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902853076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:46,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:46,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:46,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750556092] [2024-06-28 03:56:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:46,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:46,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:46,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:46,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:46,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:46,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:47,518 INFO L124 PetriNetUnfolderBase]: 163/325 cut-off events. [2024-06-28 03:56:47,518 INFO L125 PetriNetUnfolderBase]: For 2209/2209 co-relation queries the response was YES. [2024-06-28 03:56:47,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 325 events. 163/325 cut-off events. For 2209/2209 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1304 event pairs, 32 based on Foata normal form. 2/327 useless extension candidates. Maximal degree in co-relation 1386. Up to 248 conditions per place. [2024-06-28 03:56:47,520 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 57 selfloop transitions, 19 changer transitions 0/79 dead transitions. [2024-06-28 03:56:47,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 650 flow [2024-06-28 03:56:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:56:47,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-28 03:56:47,522 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 446 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:56:47,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 650 flow [2024-06-28 03:56:47,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 607 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:47,526 INFO L231 Difference]: Finished difference. Result has 79 places, 61 transitions, 457 flow [2024-06-28 03:56:47,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=457, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2024-06-28 03:56:47,526 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-28 03:56:47,526 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 457 flow [2024-06-28 03:56:47,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:47,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:47,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:47,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:56:47,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:47,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:47,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1766906380, now seen corresponding path program 3 times [2024-06-28 03:56:47,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:47,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118764278] [2024-06-28 03:56:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:47,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:49,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:49,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118764278] [2024-06-28 03:56:49,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118764278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:49,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:49,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:49,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99466953] [2024-06-28 03:56:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:49,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:49,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:49,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 457 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:49,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:49,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:49,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:50,333 INFO L124 PetriNetUnfolderBase]: 167/333 cut-off events. [2024-06-28 03:56:50,333 INFO L125 PetriNetUnfolderBase]: For 2512/2512 co-relation queries the response was YES. [2024-06-28 03:56:50,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 333 events. 167/333 cut-off events. For 2512/2512 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1340 event pairs, 32 based on Foata normal form. 2/335 useless extension candidates. Maximal degree in co-relation 1420. Up to 273 conditions per place. [2024-06-28 03:56:50,335 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 59 selfloop transitions, 14 changer transitions 0/76 dead transitions. [2024-06-28 03:56:50,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 76 transitions, 644 flow [2024-06-28 03:56:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:56:50,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:56:50,337 INFO L175 Difference]: Start difference. First operand has 79 places, 61 transitions, 457 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:56:50,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 76 transitions, 644 flow [2024-06-28 03:56:50,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 591 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:50,341 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 447 flow [2024-06-28 03:56:50,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=447, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-06-28 03:56:50,341 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-28 03:56:50,341 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 447 flow [2024-06-28 03:56:50,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:50,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:50,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:50,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:56:50,342 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:50,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1767091078, now seen corresponding path program 1 times [2024-06-28 03:56:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:50,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061214391] [2024-06-28 03:56:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:50,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:52,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061214391] [2024-06-28 03:56:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061214391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:52,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:52,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:52,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395663474] [2024-06-28 03:56:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:52,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:52,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:52,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:52,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 447 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:52,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:52,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:52,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:53,162 INFO L124 PetriNetUnfolderBase]: 171/337 cut-off events. [2024-06-28 03:56:53,163 INFO L125 PetriNetUnfolderBase]: For 2751/2751 co-relation queries the response was YES. [2024-06-28 03:56:53,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 337 events. 171/337 cut-off events. For 2751/2751 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1354 event pairs, 28 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 1418. Up to 272 conditions per place. [2024-06-28 03:56:53,165 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 61 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-28 03:56:53,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 80 transitions, 647 flow [2024-06-28 03:56:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:56:53,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:56:53,166 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 447 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:56:53,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 80 transitions, 647 flow [2024-06-28 03:56:53,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 615 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:53,170 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 461 flow [2024-06-28 03:56:53,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=461, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-06-28 03:56:53,171 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-28 03:56:53,171 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 461 flow [2024-06-28 03:56:53,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:53,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:53,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:53,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:56:53,171 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:53,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash -927701746, now seen corresponding path program 4 times [2024-06-28 03:56:53,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:53,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085873577] [2024-06-28 03:56:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:53,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085873577] [2024-06-28 03:56:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085873577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:55,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503530015] [2024-06-28 03:56:55,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:55,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:55,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:55,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:55,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:55,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 461 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:55,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:55,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:55,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:55,931 INFO L124 PetriNetUnfolderBase]: 168/336 cut-off events. [2024-06-28 03:56:55,932 INFO L125 PetriNetUnfolderBase]: For 2694/2694 co-relation queries the response was YES. [2024-06-28 03:56:55,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 336 events. 168/336 cut-off events. For 2694/2694 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1369 event pairs, 17 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 1390. Up to 234 conditions per place. [2024-06-28 03:56:55,934 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 58 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-28 03:56:55,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 655 flow [2024-06-28 03:56:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 03:56:55,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-28 03:56:55,937 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 461 flow. Second operand 7 states and 81 transitions. [2024-06-28 03:56:55,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 655 flow [2024-06-28 03:56:55,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 615 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:55,942 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 467 flow [2024-06-28 03:56:55,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-06-28 03:56:55,943 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-28 03:56:55,943 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 467 flow [2024-06-28 03:56:55,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:55,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:55,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:56:55,944 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:55,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash -927517048, now seen corresponding path program 2 times [2024-06-28 03:56:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:55,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449571929] [2024-06-28 03:56:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449571929] [2024-06-28 03:56:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449571929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:58,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:58,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641202564] [2024-06-28 03:56:58,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:58,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:58,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:58,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:56:58,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 467 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:58,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:58,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:56:58,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:58,795 INFO L124 PetriNetUnfolderBase]: 172/340 cut-off events. [2024-06-28 03:56:58,795 INFO L125 PetriNetUnfolderBase]: For 3048/3048 co-relation queries the response was YES. [2024-06-28 03:56:58,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 340 events. 172/340 cut-off events. For 3048/3048 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1378 event pairs, 27 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 1434. Up to 269 conditions per place. [2024-06-28 03:56:58,797 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 59 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2024-06-28 03:56:58,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 659 flow [2024-06-28 03:56:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 03:56:58,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:56:58,799 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 467 flow. Second operand 7 states and 77 transitions. [2024-06-28 03:56:58,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 659 flow [2024-06-28 03:56:58,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 611 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:58,805 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 469 flow [2024-06-28 03:56:58,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2024-06-28 03:56:58,805 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-28 03:56:58,805 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 469 flow [2024-06-28 03:56:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:58,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:58,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:58,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:56:58,806 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:56:58,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:58,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1020511746, now seen corresponding path program 3 times [2024-06-28 03:56:58,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:58,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477592092] [2024-06-28 03:56:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:58,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477592092] [2024-06-28 03:57:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477592092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:01,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:01,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:01,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254501830] [2024-06-28 03:57:01,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:01,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:01,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:01,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:01,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 469 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:01,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:01,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:01,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:02,008 INFO L124 PetriNetUnfolderBase]: 176/353 cut-off events. [2024-06-28 03:57:02,008 INFO L125 PetriNetUnfolderBase]: For 2845/2847 co-relation queries the response was YES. [2024-06-28 03:57:02,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 353 events. 176/353 cut-off events. For 2845/2847 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1471 event pairs, 32 based on Foata normal form. 4/357 useless extension candidates. Maximal degree in co-relation 1459. Up to 269 conditions per place. [2024-06-28 03:57:02,010 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 56 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-06-28 03:57:02,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 76 transitions, 651 flow [2024-06-28 03:57:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-28 03:57:02,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 03:57:02,012 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 469 flow. Second operand 7 states and 75 transitions. [2024-06-28 03:57:02,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 76 transitions, 651 flow [2024-06-28 03:57:02,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 76 transitions, 611 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:02,016 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 481 flow [2024-06-28 03:57:02,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-06-28 03:57:02,017 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-28 03:57:02,017 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 481 flow [2024-06-28 03:57:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:02,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:02,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:02,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:57:02,018 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:02,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:02,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1029082626, now seen corresponding path program 4 times [2024-06-28 03:57:02,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:02,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268075146] [2024-06-28 03:57:02,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:02,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:04,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:04,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268075146] [2024-06-28 03:57:04,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268075146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:04,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:04,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:04,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538350554] [2024-06-28 03:57:04,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:04,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:04,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:04,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:04,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:04,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 481 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:04,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:04,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:04,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:04,716 INFO L124 PetriNetUnfolderBase]: 173/348 cut-off events. [2024-06-28 03:57:04,716 INFO L125 PetriNetUnfolderBase]: For 2478/2480 co-relation queries the response was YES. [2024-06-28 03:57:04,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 348 events. 173/348 cut-off events. For 2478/2480 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1458 event pairs, 31 based on Foata normal form. 4/352 useless extension candidates. Maximal degree in co-relation 1395. Up to 238 conditions per place. [2024-06-28 03:57:04,720 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 53 selfloop transitions, 20 changer transitions 0/76 dead transitions. [2024-06-28 03:57:04,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 76 transitions, 651 flow [2024-06-28 03:57:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 03:57:04,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-28 03:57:04,723 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 481 flow. Second operand 7 states and 73 transitions. [2024-06-28 03:57:04,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 76 transitions, 651 flow [2024-06-28 03:57:04,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 76 transitions, 611 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:04,727 INFO L231 Difference]: Finished difference. Result has 87 places, 65 transitions, 485 flow [2024-06-28 03:57:04,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=87, PETRI_TRANSITIONS=65} [2024-06-28 03:57:04,728 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-28 03:57:04,728 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 65 transitions, 485 flow [2024-06-28 03:57:04,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:04,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:04,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:04,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:57:04,729 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:04,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1545970500, now seen corresponding path program 1 times [2024-06-28 03:57:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595984423] [2024-06-28 03:57:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:04,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595984423] [2024-06-28 03:57:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595984423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:06,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:06,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:06,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147019927] [2024-06-28 03:57:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:06,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:06,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:06,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 65 transitions, 485 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:06,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:06,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:06,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:07,501 INFO L124 PetriNetUnfolderBase]: 289/579 cut-off events. [2024-06-28 03:57:07,502 INFO L125 PetriNetUnfolderBase]: For 5733/5735 co-relation queries the response was YES. [2024-06-28 03:57:07,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 579 events. 289/579 cut-off events. For 5733/5735 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2832 event pairs, 53 based on Foata normal form. 10/589 useless extension candidates. Maximal degree in co-relation 2386. Up to 244 conditions per place. [2024-06-28 03:57:07,506 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 47 changer transitions 12/131 dead transitions. [2024-06-28 03:57:07,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 1105 flow [2024-06-28 03:57:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:57:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:57:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-28 03:57:07,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769230769230769 [2024-06-28 03:57:07,508 INFO L175 Difference]: Start difference. First operand has 87 places, 65 transitions, 485 flow. Second operand 13 states and 147 transitions. [2024-06-28 03:57:07,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 1105 flow [2024-06-28 03:57:07,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 131 transitions, 1030 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:07,516 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 714 flow [2024-06-28 03:57:07,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=714, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-28 03:57:07,516 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-28 03:57:07,517 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 714 flow [2024-06-28 03:57:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:07,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:07,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:57:07,518 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:07,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -520230946, now seen corresponding path program 2 times [2024-06-28 03:57:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825252121] [2024-06-28 03:57:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825252121] [2024-06-28 03:57:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825252121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:09,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:09,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513694325] [2024-06-28 03:57:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:09,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:09,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:09,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:09,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:09,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:09,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:09,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:10,457 INFO L124 PetriNetUnfolderBase]: 304/618 cut-off events. [2024-06-28 03:57:10,458 INFO L125 PetriNetUnfolderBase]: For 8448/8450 co-relation queries the response was YES. [2024-06-28 03:57:10,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 618 events. 304/618 cut-off events. For 8448/8450 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3098 event pairs, 62 based on Foata normal form. 10/628 useless extension candidates. Maximal degree in co-relation 2785. Up to 250 conditions per place. [2024-06-28 03:57:10,461 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 49 changer transitions 15/118 dead transitions. [2024-06-28 03:57:10,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 118 transitions, 1086 flow [2024-06-28 03:57:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:57:10,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:57:10,465 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 714 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:57:10,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 118 transitions, 1086 flow [2024-06-28 03:57:10,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 118 transitions, 1022 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:10,475 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 721 flow [2024-06-28 03:57:10,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=721, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-06-28 03:57:10,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-28 03:57:10,480 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 721 flow [2024-06-28 03:57:10,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:10,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:10,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:10,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:57:10,481 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:10,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:10,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1532162306, now seen corresponding path program 3 times [2024-06-28 03:57:10,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:10,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275974151] [2024-06-28 03:57:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:12,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:12,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275974151] [2024-06-28 03:57:12,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275974151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:12,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:12,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:12,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450267272] [2024-06-28 03:57:12,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:12,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:12,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:12,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:12,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 721 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:12,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:12,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:12,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:13,618 INFO L124 PetriNetUnfolderBase]: 352/726 cut-off events. [2024-06-28 03:57:13,618 INFO L125 PetriNetUnfolderBase]: For 13999/14001 co-relation queries the response was YES. [2024-06-28 03:57:13,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3468 conditions, 726 events. 352/726 cut-off events. For 13999/14001 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3915 event pairs, 89 based on Foata normal form. 18/744 useless extension candidates. Maximal degree in co-relation 3423. Up to 322 conditions per place. [2024-06-28 03:57:13,638 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 52 selfloop transitions, 47 changer transitions 9/111 dead transitions. [2024-06-28 03:57:13,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 111 transitions, 1065 flow [2024-06-28 03:57:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:57:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:57:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 03:57:13,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:57:13,640 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 721 flow. Second operand 12 states and 126 transitions. [2024-06-28 03:57:13,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 111 transitions, 1065 flow [2024-06-28 03:57:13,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 983 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:57:13,650 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 705 flow [2024-06-28 03:57:13,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=705, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-06-28 03:57:13,651 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-28 03:57:13,651 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 705 flow [2024-06-28 03:57:13,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:13,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:13,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:13,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:57:13,652 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:13,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -339386560, now seen corresponding path program 4 times [2024-06-28 03:57:13,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783075264] [2024-06-28 03:57:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783075264] [2024-06-28 03:57:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783075264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:16,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:16,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594608540] [2024-06-28 03:57:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:16,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:16,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:16,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:16,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:16,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 705 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:16,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:16,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:16,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:16,847 INFO L124 PetriNetUnfolderBase]: 288/602 cut-off events. [2024-06-28 03:57:16,848 INFO L125 PetriNetUnfolderBase]: For 9891/9893 co-relation queries the response was YES. [2024-06-28 03:57:16,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 602 events. 288/602 cut-off events. For 9891/9893 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3096 event pairs, 71 based on Foata normal form. 22/624 useless extension candidates. Maximal degree in co-relation 2713. Up to 322 conditions per place. [2024-06-28 03:57:16,853 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 35 changer transitions 25/101 dead transitions. [2024-06-28 03:57:16,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 101 transitions, 969 flow [2024-06-28 03:57:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:57:16,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-28 03:57:16,855 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 705 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:57:16,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 101 transitions, 969 flow [2024-06-28 03:57:16,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 877 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:57:16,861 INFO L231 Difference]: Finished difference. Result has 98 places, 66 transitions, 573 flow [2024-06-28 03:57:16,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=573, PETRI_PLACES=98, PETRI_TRANSITIONS=66} [2024-06-28 03:57:16,862 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-28 03:57:16,862 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 66 transitions, 573 flow [2024-06-28 03:57:16,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:16,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:16,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:57:16,863 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:16,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1060327586, now seen corresponding path program 5 times [2024-06-28 03:57:16,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:16,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232310136] [2024-06-28 03:57:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232310136] [2024-06-28 03:57:19,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232310136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:19,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:19,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:19,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399228192] [2024-06-28 03:57:19,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:19,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:19,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 66 transitions, 573 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:19,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:19,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:19,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:19,793 INFO L124 PetriNetUnfolderBase]: 254/523 cut-off events. [2024-06-28 03:57:19,793 INFO L125 PetriNetUnfolderBase]: For 8851/8859 co-relation queries the response was YES. [2024-06-28 03:57:19,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2363 conditions, 523 events. 254/523 cut-off events. For 8851/8859 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2621 event pairs, 74 based on Foata normal form. 28/549 useless extension candidates. Maximal degree in co-relation 2320. Up to 327 conditions per place. [2024-06-28 03:57:19,797 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 45 selfloop transitions, 24 changer transitions 14/86 dead transitions. [2024-06-28 03:57:19,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 795 flow [2024-06-28 03:57:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:57:19,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-28 03:57:19,799 INFO L175 Difference]: Start difference. First operand has 98 places, 66 transitions, 573 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:57:19,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 795 flow [2024-06-28 03:57:19,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 717 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:57:19,805 INFO L231 Difference]: Finished difference. Result has 92 places, 60 transitions, 484 flow [2024-06-28 03:57:19,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=484, PETRI_PLACES=92, PETRI_TRANSITIONS=60} [2024-06-28 03:57:19,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-28 03:57:19,806 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 60 transitions, 484 flow [2024-06-28 03:57:19,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:19,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:19,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:19,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:57:19,807 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:19,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:19,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1060475456, now seen corresponding path program 6 times [2024-06-28 03:57:19,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:19,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784274799] [2024-06-28 03:57:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:19,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:21,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784274799] [2024-06-28 03:57:21,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784274799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:21,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:21,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:21,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013524582] [2024-06-28 03:57:21,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:21,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:21,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:21,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:21,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:21,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 60 transitions, 484 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:21,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:21,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:21,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:22,526 INFO L124 PetriNetUnfolderBase]: 259/542 cut-off events. [2024-06-28 03:57:22,527 INFO L125 PetriNetUnfolderBase]: For 7777/7777 co-relation queries the response was YES. [2024-06-28 03:57:22,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 542 events. 259/542 cut-off events. For 7777/7777 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2722 event pairs, 73 based on Foata normal form. 16/556 useless extension candidates. Maximal degree in co-relation 2370. Up to 236 conditions per place. [2024-06-28 03:57:22,529 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 20 changer transitions 10/84 dead transitions. [2024-06-28 03:57:22,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 84 transitions, 750 flow [2024-06-28 03:57:22,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:57:22,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-28 03:57:22,535 INFO L175 Difference]: Start difference. First operand has 92 places, 60 transitions, 484 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:57:22,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 84 transitions, 750 flow [2024-06-28 03:57:22,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 686 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:57:22,544 INFO L231 Difference]: Finished difference. Result has 90 places, 55 transitions, 413 flow [2024-06-28 03:57:22,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=413, PETRI_PLACES=90, PETRI_TRANSITIONS=55} [2024-06-28 03:57:22,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-28 03:57:22,545 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 55 transitions, 413 flow [2024-06-28 03:57:22,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:22,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:22,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:22,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:57:22,546 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:22,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1054757444, now seen corresponding path program 1 times [2024-06-28 03:57:22,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:22,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922457069] [2024-06-28 03:57:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922457069] [2024-06-28 03:57:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922457069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:25,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:25,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:25,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13494106] [2024-06-28 03:57:25,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:25,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:25,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:25,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:25,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 55 transitions, 413 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:25,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:25,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:25,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:26,130 INFO L124 PetriNetUnfolderBase]: 195/410 cut-off events. [2024-06-28 03:57:26,130 INFO L125 PetriNetUnfolderBase]: For 5127/5127 co-relation queries the response was YES. [2024-06-28 03:57:26,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 410 events. 195/410 cut-off events. For 5127/5127 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1871 event pairs, 55 based on Foata normal form. 20/428 useless extension candidates. Maximal degree in co-relation 1610. Up to 236 conditions per place. [2024-06-28 03:57:26,132 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 42 selfloop transitions, 14 changer transitions 14/73 dead transitions. [2024-06-28 03:57:26,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 73 transitions, 603 flow [2024-06-28 03:57:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:57:26,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:57:26,135 INFO L175 Difference]: Start difference. First operand has 90 places, 55 transitions, 413 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:57:26,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 73 transitions, 603 flow [2024-06-28 03:57:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 557 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:57:26,138 INFO L231 Difference]: Finished difference. Result has 84 places, 49 transitions, 338 flow [2024-06-28 03:57:26,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=84, PETRI_TRANSITIONS=49} [2024-06-28 03:57:26,139 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-28 03:57:26,139 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 49 transitions, 338 flow [2024-06-28 03:57:26,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:26,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:26,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:26,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:57:26,140 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:26,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1054750004, now seen corresponding path program 2 times [2024-06-28 03:57:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:26,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383368496] [2024-06-28 03:57:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:26,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:28,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:28,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383368496] [2024-06-28 03:57:28,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383368496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:28,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:28,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:28,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264166392] [2024-06-28 03:57:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:28,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:28,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:28,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 49 transitions, 338 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:28,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:28,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:28,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:29,188 INFO L124 PetriNetUnfolderBase]: 151/322 cut-off events. [2024-06-28 03:57:29,188 INFO L125 PetriNetUnfolderBase]: For 3282/3282 co-relation queries the response was YES. [2024-06-28 03:57:29,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 322 events. 151/322 cut-off events. For 3282/3282 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1338 event pairs, 45 based on Foata normal form. 6/326 useless extension candidates. Maximal degree in co-relation 1282. Up to 224 conditions per place. [2024-06-28 03:57:29,190 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 8 changer transitions 20/65 dead transitions. [2024-06-28 03:57:29,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 65 transitions, 500 flow [2024-06-28 03:57:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 03:57:29,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-28 03:57:29,194 INFO L175 Difference]: Start difference. First operand has 84 places, 49 transitions, 338 flow. Second operand 10 states and 96 transitions. [2024-06-28 03:57:29,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 65 transitions, 500 flow [2024-06-28 03:57:29,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 65 transitions, 457 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:57:29,197 INFO L231 Difference]: Finished difference. Result has 78 places, 41 transitions, 249 flow [2024-06-28 03:57:29,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=78, PETRI_TRANSITIONS=41} [2024-06-28 03:57:29,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-28 03:57:29,197 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 41 transitions, 249 flow [2024-06-28 03:57:29,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:29,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:29,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:29,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:57:29,198 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:29,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1571087040, now seen corresponding path program 3 times [2024-06-28 03:57:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105168611] [2024-06-28 03:57:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:29,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:31,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:31,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105168611] [2024-06-28 03:57:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105168611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:31,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:31,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999307017] [2024-06-28 03:57:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:31,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:31,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:31,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 41 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:31,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:31,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:31,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:32,602 INFO L124 PetriNetUnfolderBase]: 127/269 cut-off events. [2024-06-28 03:57:32,602 INFO L125 PetriNetUnfolderBase]: For 3134/3134 co-relation queries the response was YES. [2024-06-28 03:57:32,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 269 events. 127/269 cut-off events. For 3134/3134 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1079 event pairs, 34 based on Foata normal form. 10/279 useless extension candidates. Maximal degree in co-relation 991. Up to 153 conditions per place. [2024-06-28 03:57:32,606 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 27 selfloop transitions, 16 changer transitions 11/57 dead transitions. [2024-06-28 03:57:32,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 57 transitions, 401 flow [2024-06-28 03:57:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:57:32,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-28 03:57:32,607 INFO L175 Difference]: Start difference. First operand has 78 places, 41 transitions, 249 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:57:32,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 57 transitions, 401 flow [2024-06-28 03:57:32,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 57 transitions, 364 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:57:32,610 INFO L231 Difference]: Finished difference. Result has 67 places, 38 transitions, 233 flow [2024-06-28 03:57:32,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=233, PETRI_PLACES=67, PETRI_TRANSITIONS=38} [2024-06-28 03:57:32,611 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-28 03:57:32,611 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 38 transitions, 233 flow [2024-06-28 03:57:32,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:32,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:32,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:32,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:57:32,612 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:32,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1198881314, now seen corresponding path program 4 times [2024-06-28 03:57:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481869067] [2024-06-28 03:57:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:32,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:35,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:35,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481869067] [2024-06-28 03:57:35,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481869067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:35,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:35,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:35,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737127208] [2024-06-28 03:57:35,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:35,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:35,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:35,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:35,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:35,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:35,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 38 transitions, 233 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:35,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:35,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:35,956 INFO L124 PetriNetUnfolderBase]: 117/251 cut-off events. [2024-06-28 03:57:35,956 INFO L125 PetriNetUnfolderBase]: For 3030/3030 co-relation queries the response was YES. [2024-06-28 03:57:35,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 251 events. 117/251 cut-off events. For 3030/3030 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1025 event pairs, 39 based on Foata normal form. 10/261 useless extension candidates. Maximal degree in co-relation 954. Up to 161 conditions per place. [2024-06-28 03:57:35,958 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 26 selfloop transitions, 11 changer transitions 11/51 dead transitions. [2024-06-28 03:57:35,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 51 transitions, 367 flow [2024-06-28 03:57:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 03:57:35,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-28 03:57:35,959 INFO L175 Difference]: Start difference. First operand has 67 places, 38 transitions, 233 flow. Second operand 9 states and 88 transitions. [2024-06-28 03:57:35,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 51 transitions, 367 flow [2024-06-28 03:57:35,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 329 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:57:35,962 INFO L231 Difference]: Finished difference. Result has 64 places, 35 transitions, 202 flow [2024-06-28 03:57:35,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=64, PETRI_TRANSITIONS=35} [2024-06-28 03:57:35,963 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-28 03:57:35,963 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 35 transitions, 202 flow [2024-06-28 03:57:35,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:35,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:35,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:35,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:57:35,964 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:35,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2042931650, now seen corresponding path program 7 times [2024-06-28 03:57:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543077232] [2024-06-28 03:57:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:35,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:38,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:38,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543077232] [2024-06-28 03:57:38,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543077232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:38,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:38,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:38,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913391236] [2024-06-28 03:57:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:38,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:38,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:38,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:38,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:38,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 35 transitions, 202 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:38,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:38,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:38,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:38,798 INFO L124 PetriNetUnfolderBase]: 100/220 cut-off events. [2024-06-28 03:57:38,798 INFO L125 PetriNetUnfolderBase]: For 2734/2734 co-relation queries the response was YES. [2024-06-28 03:57:38,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 220 events. 100/220 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 836 event pairs, 40 based on Foata normal form. 10/230 useless extension candidates. Maximal degree in co-relation 806. Up to 142 conditions per place. [2024-06-28 03:57:38,799 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 26 selfloop transitions, 8 changer transitions 11/48 dead transitions. [2024-06-28 03:57:38,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 48 transitions, 330 flow [2024-06-28 03:57:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-28 03:57:38,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-28 03:57:38,801 INFO L175 Difference]: Start difference. First operand has 64 places, 35 transitions, 202 flow. Second operand 9 states and 86 transitions. [2024-06-28 03:57:38,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 48 transitions, 330 flow [2024-06-28 03:57:38,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 304 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:57:38,803 INFO L231 Difference]: Finished difference. Result has 62 places, 32 transitions, 176 flow [2024-06-28 03:57:38,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=176, PETRI_PLACES=62, PETRI_TRANSITIONS=32} [2024-06-28 03:57:38,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-28 03:57:38,804 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 32 transitions, 176 flow [2024-06-28 03:57:38,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:38,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:38,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:38,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:57:38,804 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:38,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1571094480, now seen corresponding path program 5 times [2024-06-28 03:57:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876553670] [2024-06-28 03:57:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:41,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:41,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876553670] [2024-06-28 03:57:41,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876553670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:41,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205212299] [2024-06-28 03:57:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:41,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:41,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:41,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 32 transitions, 176 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:41,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:41,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:41,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:41,911 INFO L124 PetriNetUnfolderBase]: 84/196 cut-off events. [2024-06-28 03:57:41,911 INFO L125 PetriNetUnfolderBase]: For 2001/2001 co-relation queries the response was YES. [2024-06-28 03:57:41,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 196 events. 84/196 cut-off events. For 2001/2001 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 709 event pairs, 35 based on Foata normal form. 6/202 useless extension candidates. Maximal degree in co-relation 694. Up to 118 conditions per place. [2024-06-28 03:57:41,912 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 22 selfloop transitions, 8 changer transitions 11/44 dead transitions. [2024-06-28 03:57:41,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 44 transitions, 286 flow [2024-06-28 03:57:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-06-28 03:57:41,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3111111111111111 [2024-06-28 03:57:41,913 INFO L175 Difference]: Start difference. First operand has 62 places, 32 transitions, 176 flow. Second operand 9 states and 84 transitions. [2024-06-28 03:57:41,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 44 transitions, 286 flow [2024-06-28 03:57:41,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 44 transitions, 266 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:57:41,915 INFO L231 Difference]: Finished difference. Result has 60 places, 29 transitions, 160 flow [2024-06-28 03:57:41,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=60, PETRI_TRANSITIONS=29} [2024-06-28 03:57:41,915 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 03:57:41,916 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 29 transitions, 160 flow [2024-06-28 03:57:41,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:41,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:41,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:41,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:57:41,916 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:41,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:41,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1198873874, now seen corresponding path program 6 times [2024-06-28 03:57:41,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:41,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880888176] [2024-06-28 03:57:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:44,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:44,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880888176] [2024-06-28 03:57:44,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880888176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:44,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:44,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:44,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084394057] [2024-06-28 03:57:44,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:44,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:44,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:44,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:44,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:44,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:44,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 29 transitions, 160 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:44,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:44,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:44,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:44,873 INFO L124 PetriNetUnfolderBase]: 74/178 cut-off events. [2024-06-28 03:57:44,873 INFO L125 PetriNetUnfolderBase]: For 1730/1730 co-relation queries the response was YES. [2024-06-28 03:57:44,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 178 events. 74/178 cut-off events. For 1730/1730 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 632 event pairs, 34 based on Foata normal form. 6/184 useless extension candidates. Maximal degree in co-relation 632. Up to 114 conditions per place. [2024-06-28 03:57:44,874 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 20 selfloop transitions, 6 changer transitions 11/40 dead transitions. [2024-06-28 03:57:44,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 40 transitions, 260 flow [2024-06-28 03:57:44,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:44,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-06-28 03:57:44,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037037037037037 [2024-06-28 03:57:44,877 INFO L175 Difference]: Start difference. First operand has 60 places, 29 transitions, 160 flow. Second operand 9 states and 82 transitions. [2024-06-28 03:57:44,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 40 transitions, 260 flow [2024-06-28 03:57:44,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 40 transitions, 236 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:57:44,879 INFO L231 Difference]: Finished difference. Result has 56 places, 26 transitions, 134 flow [2024-06-28 03:57:44,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=26} [2024-06-28 03:57:44,881 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-28 03:57:44,881 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 26 transitions, 134 flow [2024-06-28 03:57:44,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:44,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:44,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:44,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:57:44,881 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:44,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1836791760, now seen corresponding path program 7 times [2024-06-28 03:57:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271150792] [2024-06-28 03:57:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271150792] [2024-06-28 03:57:47,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271150792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309598379] [2024-06-28 03:57:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:47,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:47,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:47,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 26 transitions, 134 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:47,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:47,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:47,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:47,554 INFO L124 PetriNetUnfolderBase]: 51/125 cut-off events. [2024-06-28 03:57:47,555 INFO L125 PetriNetUnfolderBase]: For 891/891 co-relation queries the response was YES. [2024-06-28 03:57:47,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 125 events. 51/125 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 344 event pairs, 20 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 400. Up to 57 conditions per place. [2024-06-28 03:57:47,555 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 16 selfloop transitions, 4 changer transitions 14/37 dead transitions. [2024-06-28 03:57:47,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 37 transitions, 224 flow [2024-06-28 03:57:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-06-28 03:57:47,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2962962962962963 [2024-06-28 03:57:47,556 INFO L175 Difference]: Start difference. First operand has 56 places, 26 transitions, 134 flow. Second operand 9 states and 80 transitions. [2024-06-28 03:57:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 37 transitions, 224 flow [2024-06-28 03:57:47,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 37 transitions, 202 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:57:47,557 INFO L231 Difference]: Finished difference. Result has 52 places, 21 transitions, 97 flow [2024-06-28 03:57:47,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=97, PETRI_PLACES=52, PETRI_TRANSITIONS=21} [2024-06-28 03:57:47,558 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-28 03:57:47,558 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 21 transitions, 97 flow [2024-06-28 03:57:47,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:47,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:47,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:57:47,558 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:57:47,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1204599326, now seen corresponding path program 8 times [2024-06-28 03:57:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953463485] [2024-06-28 03:57:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953463485] [2024-06-28 03:57:50,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953463485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:50,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:50,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:50,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529971750] [2024-06-28 03:57:50,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:50,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:50,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:50,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:50,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:57:50,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 21 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:50,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:50,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:57:50,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:51,114 INFO L124 PetriNetUnfolderBase]: 21/59 cut-off events. [2024-06-28 03:57:51,114 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2024-06-28 03:57:51,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 59 events. 21/59 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 1 based on Foata normal form. 8/67 useless extension candidates. Maximal degree in co-relation 155. Up to 32 conditions per place. [2024-06-28 03:57:51,114 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-28 03:57:51,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 25 transitions, 131 flow [2024-06-28 03:57:51,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 63 transitions. [2024-06-28 03:57:51,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2625 [2024-06-28 03:57:51,115 INFO L175 Difference]: Start difference. First operand has 52 places, 21 transitions, 97 flow. Second operand 8 states and 63 transitions. [2024-06-28 03:57:51,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 25 transitions, 131 flow [2024-06-28 03:57:51,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 103 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 03:57:51,116 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-06-28 03:57:51,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-06-28 03:57:51,128 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-06-28 03:57:51,128 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-06-28 03:57:51,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:51,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:57:51,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:57:51,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:57:51,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:57:51,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:57:51,131 INFO L445 BasicCegarLoop]: Path program histogram: [8, 7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:51,134 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:57:51,134 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:57:51,136 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:57:51,142 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:57:51,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:57:51 BasicIcfg [2024-06-28 03:57:51,143 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:57:51,144 INFO L158 Benchmark]: Toolchain (without parser) took 117099.74ms. Allocated memory was 132.1MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 72.5MB in the beginning and 987.7MB in the end (delta: -915.2MB). Peak memory consumption was 620.7MB. Max. memory is 16.1GB. [2024-06-28 03:57:51,144 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 132.1MB. Free memory was 93.4MB in the beginning and 93.3MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:57:51,144 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:57:51,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.15ms. Allocated memory was 132.1MB in the beginning and 201.3MB in the end (delta: 69.2MB). Free memory was 72.3MB in the beginning and 156.1MB in the end (delta: -83.8MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2024-06-28 03:57:51,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.81ms. Allocated memory is still 201.3MB. Free memory was 156.1MB in the beginning and 153.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:57:51,145 INFO L158 Benchmark]: Boogie Preprocessor took 44.97ms. Allocated memory is still 201.3MB. Free memory was 153.3MB in the beginning and 149.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:57:51,145 INFO L158 Benchmark]: RCFGBuilder took 781.63ms. Allocated memory is still 201.3MB. Free memory was 149.2MB in the beginning and 126.0MB in the end (delta: 23.2MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2024-06-28 03:57:51,145 INFO L158 Benchmark]: TraceAbstraction took 115617.09ms. Allocated memory was 201.3MB in the beginning and 1.1GB in the end (delta: 861.9MB). Free memory was 125.0MB in the beginning and 987.7MB in the end (delta: -862.8MB). Peak memory consumption was 601.0MB. Max. memory is 16.1GB. [2024-06-28 03:57:51,146 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 132.1MB. Free memory was 93.4MB in the beginning and 93.3MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.15ms. Allocated memory was 132.1MB in the beginning and 201.3MB in the end (delta: 69.2MB). Free memory was 72.3MB in the beginning and 156.1MB in the end (delta: -83.8MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.81ms. Allocated memory is still 201.3MB. Free memory was 156.1MB in the beginning and 153.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.97ms. Allocated memory is still 201.3MB. Free memory was 153.3MB in the beginning and 149.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 781.63ms. Allocated memory is still 201.3MB. Free memory was 149.2MB in the beginning and 126.0MB in the end (delta: 23.2MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. * TraceAbstraction took 115617.09ms. Allocated memory was 201.3MB in the beginning and 1.1GB in the end (delta: 861.9MB). Free memory was 125.0MB in the beginning and 987.7MB in the end (delta: -862.8MB). Peak memory consumption was 601.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 815]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 816]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 115.5s, OverallIterations: 41, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1252 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1125 mSDsluCounter, 769 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 612 mSDsCounter, 384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6903 IncrementalHoareTripleChecker+Invalid, 7287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 384 mSolverCounterUnsat, 157 mSDtfsCounter, 6903 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 429 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 39.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=721occurred in iteration=28, InterpolantAutomatonStates: 339, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 89.5s InterpolantComputationTime, 613 NumberOfCodeBlocks, 613 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 572 ConstructedInterpolants, 0 QuantifiedInterpolants, 69476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:57:51,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE