./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe032_power.oepc_power.opt_pso.oepc_pso.opt_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/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe032_power.oepc_power.opt_pso.oepc_pso.opt_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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:12:20,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:12:20,556 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:12:20,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:12:20,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:12:20,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:12:20,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:12:20,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:12:20,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:12:20,590 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:12:20,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:12:20,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:12:20,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:12:20,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:12:20,592 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:12:20,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:12:20,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:12:20,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:12:20,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:12:20,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:12:20,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:12:20,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:12:20,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:12:20,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:12:20,595 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:12:20,595 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:12:20,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:12:20,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:12:20,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:12:20,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:12:20,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:12:20,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:12:20,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:12:20,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:12:20,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:12:20,598 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:12:20,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:12:20,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:12:20,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:12:20,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:12:20,599 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:12:20,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:12:20,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:12:20,599 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:12:20,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:12:20,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:12:20,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:12:20,845 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:12:20,846 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:12:20,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 02:12:21,081 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:12:21,082 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:12:21,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:12:22,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:12:22,317 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:12:22,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:12:22,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903321136/0d2ed9f5269e426e9381d220cfdcfe23/FLAGbbabd2244 [2024-06-28 02:12:22,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903321136/0d2ed9f5269e426e9381d220cfdcfe23 [2024-06-28 02:12:22,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:12:22,354 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:12:22,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:12:22,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:12:22,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:12:22,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:21" (1/2) ... [2024-06-28 02:12:22,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10197705 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:22, skipping insertion in model container [2024-06-28 02:12:22,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:21" (1/2) ... [2024-06-28 02:12:22,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@429cdedf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:22, skipping insertion in model container [2024-06-28 02:12:22,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:12:22" (2/2) ... [2024-06-28 02:12:22,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10197705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:22, skipping insertion in model container [2024-06-28 02:12:22,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:12:22" (2/2) ... [2024-06-28 02:12:22,365 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:12:22,440 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:12:22,441 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ((((((((((((((((! multithreaded || x$read_delayed == (_Bool)0) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 02:12:22,441 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((! multithreaded || x$read_delayed == (_Bool)0) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 02:12:22,441 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ((((((((((((((((! multithreaded || x$read_delayed == (_Bool)0) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 02:12:22,442 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:12:22,442 INFO L106 edCorrectnessWitness]: ghost_update [L850-L850] multithreaded = 1; [2024-06-28 02:12:22,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:12:22,647 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2024-06-28 02:12:22,860 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:12:22,872 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:12:22,926 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:12:23,018 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:12:23,047 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:12:23,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23 WrapperNode [2024-06-28 02:12:23,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:12:23,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:12:23,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:12:23,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:12:23,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,136 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-28 02:12:23,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:12:23,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:12:23,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:12:23,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:12:23,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,186 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:12:23,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:12:23,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:12:23,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:12:23,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:12:23,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (1/1) ... [2024-06-28 02:12:23,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:12:23,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:12:23,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:12:23,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:12:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:12:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:12:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:12:23,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:12:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:12:23,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:12:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:12:23,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:12:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:12:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:12:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:12:23,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:12:23,296 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:12:23,410 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:12:23,415 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:12:23,762 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:12:23,762 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:12:23,928 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:12:23,929 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:12:23,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:12:23 BoogieIcfgContainer [2024-06-28 02:12:23,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:12:23,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:12:23,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:12:23,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:12:23,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:21" (1/4) ... [2024-06-28 02:12:23,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5688c018 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:12:23, skipping insertion in model container [2024-06-28 02:12:23,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:12:22" (2/4) ... [2024-06-28 02:12:23,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5688c018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:12:23, skipping insertion in model container [2024-06-28 02:12:23,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:23" (3/4) ... [2024-06-28 02:12:23,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5688c018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:12:23, skipping insertion in model container [2024-06-28 02:12:23,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:12:23" (4/4) ... [2024-06-28 02:12:23,937 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:12:23,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:12:23,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:12:23,952 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:12:23,995 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:12:24,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 02:12:24,055 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 02:12:24,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:12:24,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 02:12:24,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 02:12:24,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 02:12:24,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:12:24,107 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;@16fcb309, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:12:24,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:12:24,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:12:24,115 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:12:24,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:12:24,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:24,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:12:24,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:24,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash 426542501, now seen corresponding path program 1 times [2024-06-28 02:12:24,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:24,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071381494] [2024-06-28 02:12:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:24,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071381494] [2024-06-28 02:12:24,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071381494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:24,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:24,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:12:24,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5961414] [2024-06-28 02:12:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:24,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:12:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:24,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:12:24,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:12:24,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 02:12:24,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:24,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:24,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 02:12:24,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:25,883 INFO L124 PetriNetUnfolderBase]: 4925/7800 cut-off events. [2024-06-28 02:12:25,883 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-28 02:12:25,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14930 conditions, 7800 events. 4925/7800 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 50094 event pairs, 4091 based on Foata normal form. 246/7479 useless extension candidates. Maximal degree in co-relation 14918. Up to 7030 conditions per place. [2024-06-28 02:12:25,924 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 44 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 02:12:25,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 233 flow [2024-06-28 02:12:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:12:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:12:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-28 02:12:25,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 02:12:25,935 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 96 transitions. [2024-06-28 02:12:25,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 233 flow [2024-06-28 02:12:25,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:25,940 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 02:12:25,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 02:12:25,944 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 02:12:25,944 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 02:12:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:25,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:25,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:25,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:12:25,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:25,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1885727156, now seen corresponding path program 1 times [2024-06-28 02:12:25,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:25,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326174121] [2024-06-28 02:12:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:25,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:26,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326174121] [2024-06-28 02:12:26,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326174121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:26,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:26,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:12:26,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449941391] [2024-06-28 02:12:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:26,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:12:26,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:26,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:12:26,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:12:26,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 02:12:26,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:26,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:26,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 02:12:26,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:27,325 INFO L124 PetriNetUnfolderBase]: 4911/7054 cut-off events. [2024-06-28 02:12:27,326 INFO L125 PetriNetUnfolderBase]: For 992/992 co-relation queries the response was YES. [2024-06-28 02:12:27,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15746 conditions, 7054 events. 4911/7054 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 39576 event pairs, 2397 based on Foata normal form. 6/6777 useless extension candidates. Maximal degree in co-relation 15734. Up to 6960 conditions per place. [2024-06-28 02:12:27,356 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 57 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-06-28 02:12:27,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 335 flow [2024-06-28 02:12:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:12:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:12:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 02:12:27,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-06-28 02:12:27,358 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 125 transitions. [2024-06-28 02:12:27,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 335 flow [2024-06-28 02:12:27,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:27,360 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-28 02:12:27,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 02:12:27,361 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 02:12:27,361 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-28 02:12:27,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:27,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:27,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:27,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:12:27,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:27,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:27,362 INFO L85 PathProgramCache]: Analyzing trace with hash 320673162, now seen corresponding path program 1 times [2024-06-28 02:12:27,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:27,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327055478] [2024-06-28 02:12:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:27,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:27,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327055478] [2024-06-28 02:12:27,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327055478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:27,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:27,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911419742] [2024-06-28 02:12:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:27,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:27,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:27,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:27,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:27,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:28,724 INFO L124 PetriNetUnfolderBase]: 5515/8630 cut-off events. [2024-06-28 02:12:28,724 INFO L125 PetriNetUnfolderBase]: For 2863/2863 co-relation queries the response was YES. [2024-06-28 02:12:28,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20048 conditions, 8630 events. 5515/8630 cut-off events. For 2863/2863 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 54782 event pairs, 3485 based on Foata normal form. 4/8078 useless extension candidates. Maximal degree in co-relation 20033. Up to 7827 conditions per place. [2024-06-28 02:12:28,766 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 59 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-06-28 02:12:28,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 408 flow [2024-06-28 02:12:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:12:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:12:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 02:12:28,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:12:28,768 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 5 states and 125 transitions. [2024-06-28 02:12:28,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 408 flow [2024-06-28 02:12:28,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 382 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:28,770 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 256 flow [2024-06-28 02:12:28,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-06-28 02:12:28,771 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 02:12:28,771 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 256 flow [2024-06-28 02:12:28,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:28,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:28,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:28,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:12:28,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:28,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash -31631614, now seen corresponding path program 1 times [2024-06-28 02:12:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:28,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565137963] [2024-06-28 02:12:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:29,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:29,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565137963] [2024-06-28 02:12:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565137963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:29,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:29,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239419608] [2024-06-28 02:12:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:29,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:29,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 02:12:29,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:29,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:29,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 02:12:29,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:30,447 INFO L124 PetriNetUnfolderBase]: 4822/7076 cut-off events. [2024-06-28 02:12:30,448 INFO L125 PetriNetUnfolderBase]: For 4663/4663 co-relation queries the response was YES. [2024-06-28 02:12:30,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18754 conditions, 7076 events. 4822/7076 cut-off events. For 4663/4663 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 41472 event pairs, 1418 based on Foata normal form. 6/6779 useless extension candidates. Maximal degree in co-relation 18737. Up to 6787 conditions per place. [2024-06-28 02:12:30,480 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 82 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-28 02:12:30,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 109 transitions, 571 flow [2024-06-28 02:12:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 02:12:30,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:12:30,484 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 256 flow. Second operand 6 states and 180 transitions. [2024-06-28 02:12:30,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 109 transitions, 571 flow [2024-06-28 02:12:30,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 109 transitions, 559 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:30,489 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 306 flow [2024-06-28 02:12:30,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-06-28 02:12:30,491 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-06-28 02:12:30,491 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 306 flow [2024-06-28 02:12:30,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:30,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:30,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:30,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:12:30,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:30,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1569644305, now seen corresponding path program 1 times [2024-06-28 02:12:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:30,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63618936] [2024-06-28 02:12:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63618936] [2024-06-28 02:12:30,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63618936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:30,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:30,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057978015] [2024-06-28 02:12:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:30,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:31,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:31,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:31,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:31,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:31,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:32,032 INFO L124 PetriNetUnfolderBase]: 5481/8590 cut-off events. [2024-06-28 02:12:32,032 INFO L125 PetriNetUnfolderBase]: For 8556/8559 co-relation queries the response was YES. [2024-06-28 02:12:32,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23400 conditions, 8590 events. 5481/8590 cut-off events. For 8556/8559 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 54876 event pairs, 2399 based on Foata normal form. 6/8057 useless extension candidates. Maximal degree in co-relation 23379. Up to 7681 conditions per place. [2024-06-28 02:12:32,087 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 77 selfloop transitions, 23 changer transitions 0/109 dead transitions. [2024-06-28 02:12:32,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 679 flow [2024-06-28 02:12:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 02:12:32,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-06-28 02:12:32,089 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 306 flow. Second operand 6 states and 157 transitions. [2024-06-28 02:12:32,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 679 flow [2024-06-28 02:12:32,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 633 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:32,099 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 425 flow [2024-06-28 02:12:32,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=425, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2024-06-28 02:12:32,101 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 02:12:32,104 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 425 flow [2024-06-28 02:12:32,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:32,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:32,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:32,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:12:32,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:32,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1053724945, now seen corresponding path program 2 times [2024-06-28 02:12:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:32,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196491185] [2024-06-28 02:12:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:32,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196491185] [2024-06-28 02:12:32,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196491185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:32,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:32,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721533556] [2024-06-28 02:12:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:32,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:32,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:32,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:32,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:32,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:32,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:33,761 INFO L124 PetriNetUnfolderBase]: 5469/8563 cut-off events. [2024-06-28 02:12:33,762 INFO L125 PetriNetUnfolderBase]: For 12036/12036 co-relation queries the response was YES. [2024-06-28 02:12:33,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25092 conditions, 8563 events. 5469/8563 cut-off events. For 12036/12036 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 54709 event pairs, 2395 based on Foata normal form. 4/8030 useless extension candidates. Maximal degree in co-relation 25068. Up to 7671 conditions per place. [2024-06-28 02:12:33,810 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 71 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-28 02:12:33,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 682 flow [2024-06-28 02:12:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 02:12:33,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:12:33,812 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 425 flow. Second operand 6 states and 150 transitions. [2024-06-28 02:12:33,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 682 flow [2024-06-28 02:12:33,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 104 transitions, 620 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:33,837 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 428 flow [2024-06-28 02:12:33,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-06-28 02:12:33,839 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-28 02:12:33,839 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 428 flow [2024-06-28 02:12:33,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:33,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:33,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:33,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:12:33,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:33,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1569398227, now seen corresponding path program 1 times [2024-06-28 02:12:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:33,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910725838] [2024-06-28 02:12:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:34,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:34,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910725838] [2024-06-28 02:12:34,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910725838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:34,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:34,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:34,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93634931] [2024-06-28 02:12:34,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:34,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:34,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:34,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:35,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:35,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 428 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:35,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:35,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:35,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:36,293 INFO L124 PetriNetUnfolderBase]: 5357/8406 cut-off events. [2024-06-28 02:12:36,293 INFO L125 PetriNetUnfolderBase]: For 12866/12866 co-relation queries the response was YES. [2024-06-28 02:12:36,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24480 conditions, 8406 events. 5357/8406 cut-off events. For 12866/12866 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 53726 event pairs, 2314 based on Foata normal form. 4/7913 useless extension candidates. Maximal degree in co-relation 24455. Up to 7551 conditions per place. [2024-06-28 02:12:36,363 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 90 selfloop transitions, 17 changer transitions 0/116 dead transitions. [2024-06-28 02:12:36,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 755 flow [2024-06-28 02:12:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 02:12:36,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 02:12:36,365 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 428 flow. Second operand 6 states and 154 transitions. [2024-06-28 02:12:36,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 755 flow [2024-06-28 02:12:36,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 116 transitions, 717 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:36,379 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 490 flow [2024-06-28 02:12:36,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-28 02:12:36,380 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-28 02:12:36,380 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 490 flow [2024-06-28 02:12:36,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:36,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:36,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:36,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:12:36,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:36,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:36,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1364196449, now seen corresponding path program 1 times [2024-06-28 02:12:36,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:36,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554075939] [2024-06-28 02:12:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:36,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:36,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:36,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554075939] [2024-06-28 02:12:36,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554075939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:36,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:36,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:12:36,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127707077] [2024-06-28 02:12:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:36,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:12:36,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:12:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:12:36,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-06-28 02:12:36,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:36,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:36,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-06-28 02:12:36,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:36,855 INFO L124 PetriNetUnfolderBase]: 1911/3645 cut-off events. [2024-06-28 02:12:36,855 INFO L125 PetriNetUnfolderBase]: For 12197/12317 co-relation queries the response was YES. [2024-06-28 02:12:36,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9945 conditions, 3645 events. 1911/3645 cut-off events. For 12197/12317 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 26406 event pairs, 686 based on Foata normal form. 205/3635 useless extension candidates. Maximal degree in co-relation 9918. Up to 2199 conditions per place. [2024-06-28 02:12:36,884 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 46 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-28 02:12:36,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 612 flow [2024-06-28 02:12:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:12:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:12:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-28 02:12:36,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-06-28 02:12:36,886 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 490 flow. Second operand 3 states and 105 transitions. [2024-06-28 02:12:36,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 612 flow [2024-06-28 02:12:36,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 583 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:36,895 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 455 flow [2024-06-28 02:12:36,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2024-06-28 02:12:36,897 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 02:12:36,897 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 455 flow [2024-06-28 02:12:36,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:36,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:36,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:36,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:12:36,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:36,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1656645844, now seen corresponding path program 1 times [2024-06-28 02:12:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742548202] [2024-06-28 02:12:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:36,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742548202] [2024-06-28 02:12:37,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742548202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:37,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795363710] [2024-06-28 02:12:37,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:37,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:37,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:37,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:37,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 455 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:37,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:37,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:37,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:38,789 INFO L124 PetriNetUnfolderBase]: 5115/8040 cut-off events. [2024-06-28 02:12:38,789 INFO L125 PetriNetUnfolderBase]: For 20429/20435 co-relation queries the response was YES. [2024-06-28 02:12:38,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24794 conditions, 8040 events. 5115/8040 cut-off events. For 20429/20435 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50214 event pairs, 1975 based on Foata normal form. 8/7825 useless extension candidates. Maximal degree in co-relation 24766. Up to 6737 conditions per place. [2024-06-28 02:12:38,833 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 117 selfloop transitions, 50 changer transitions 6/182 dead transitions. [2024-06-28 02:12:38,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 182 transitions, 1306 flow [2024-06-28 02:12:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 02:12:38,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-28 02:12:38,836 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 455 flow. Second operand 8 states and 219 transitions. [2024-06-28 02:12:38,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 182 transitions, 1306 flow [2024-06-28 02:12:38,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 182 transitions, 1260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:38,858 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 805 flow [2024-06-28 02:12:38,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=805, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2024-06-28 02:12:38,860 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 02:12:38,860 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 805 flow [2024-06-28 02:12:38,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:38,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:38,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:38,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:12:38,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:38,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2078635498, now seen corresponding path program 1 times [2024-06-28 02:12:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:38,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522630571] [2024-06-28 02:12:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:39,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:39,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522630571] [2024-06-28 02:12:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522630571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:39,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763403171] [2024-06-28 02:12:39,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:39,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:39,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:39,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:39,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:39,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 805 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:39,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:39,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:39,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:40,224 INFO L124 PetriNetUnfolderBase]: 4561/7255 cut-off events. [2024-06-28 02:12:40,225 INFO L125 PetriNetUnfolderBase]: For 23348/23350 co-relation queries the response was YES. [2024-06-28 02:12:40,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24554 conditions, 7255 events. 4561/7255 cut-off events. For 23348/23350 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 45109 event pairs, 2081 based on Foata normal form. 1/7033 useless extension candidates. Maximal degree in co-relation 24521. Up to 6505 conditions per place. [2024-06-28 02:12:40,276 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 112 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2024-06-28 02:12:40,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 130 transitions, 1148 flow [2024-06-28 02:12:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:12:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:12:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 02:12:40,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 02:12:40,279 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 805 flow. Second operand 5 states and 115 transitions. [2024-06-28 02:12:40,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 130 transitions, 1148 flow [2024-06-28 02:12:40,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 1092 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:40,317 INFO L231 Difference]: Finished difference. Result has 87 places, 115 transitions, 849 flow [2024-06-28 02:12:40,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=849, PETRI_PLACES=87, PETRI_TRANSITIONS=115} [2024-06-28 02:12:40,317 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-06-28 02:12:40,318 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 115 transitions, 849 flow [2024-06-28 02:12:40,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:40,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:40,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:40,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:12:40,318 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:40,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1821465214, now seen corresponding path program 2 times [2024-06-28 02:12:40,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:40,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939872570] [2024-06-28 02:12:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:40,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:41,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:41,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939872570] [2024-06-28 02:12:41,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939872570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:41,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:41,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:41,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605013] [2024-06-28 02:12:41,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:41,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:41,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:41,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:41,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:41,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 115 transitions, 849 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:41,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:41,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:41,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:42,229 INFO L124 PetriNetUnfolderBase]: 4647/7402 cut-off events. [2024-06-28 02:12:42,229 INFO L125 PetriNetUnfolderBase]: For 25594/25594 co-relation queries the response was YES. [2024-06-28 02:12:42,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25959 conditions, 7402 events. 4647/7402 cut-off events. For 25594/25594 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 46345 event pairs, 1860 based on Foata normal form. 10/7189 useless extension candidates. Maximal degree in co-relation 25924. Up to 6461 conditions per place. [2024-06-28 02:12:42,315 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 126 selfloop transitions, 37 changer transitions 0/172 dead transitions. [2024-06-28 02:12:42,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1434 flow [2024-06-28 02:12:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:12:42,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 02:12:42,318 INFO L175 Difference]: Start difference. First operand has 87 places, 115 transitions, 849 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:12:42,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1434 flow [2024-06-28 02:12:42,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1389 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:42,354 INFO L231 Difference]: Finished difference. Result has 92 places, 125 transitions, 1011 flow [2024-06-28 02:12:42,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1011, PETRI_PLACES=92, PETRI_TRANSITIONS=125} [2024-06-28 02:12:42,354 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-28 02:12:42,354 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 125 transitions, 1011 flow [2024-06-28 02:12:42,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:42,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:42,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:42,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:12:42,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:42,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:42,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1821287584, now seen corresponding path program 3 times [2024-06-28 02:12:42,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:42,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396083412] [2024-06-28 02:12:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:42,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396083412] [2024-06-28 02:12:43,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396083412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:43,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:43,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266634918] [2024-06-28 02:12:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:43,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:43,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:43,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 125 transitions, 1011 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:43,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:43,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:43,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:44,353 INFO L124 PetriNetUnfolderBase]: 4783/7656 cut-off events. [2024-06-28 02:12:44,354 INFO L125 PetriNetUnfolderBase]: For 29979/29987 co-relation queries the response was YES. [2024-06-28 02:12:44,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27855 conditions, 7656 events. 4783/7656 cut-off events. For 29979/29987 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 48509 event pairs, 1710 based on Foata normal form. 10/7429 useless extension candidates. Maximal degree in co-relation 27818. Up to 6196 conditions per place. [2024-06-28 02:12:44,399 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 104 selfloop transitions, 75 changer transitions 0/188 dead transitions. [2024-06-28 02:12:44,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 188 transitions, 1731 flow [2024-06-28 02:12:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:12:44,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:12:44,402 INFO L175 Difference]: Start difference. First operand has 92 places, 125 transitions, 1011 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:12:44,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 188 transitions, 1731 flow [2024-06-28 02:12:44,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 188 transitions, 1631 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:44,431 INFO L231 Difference]: Finished difference. Result has 95 places, 138 transitions, 1270 flow [2024-06-28 02:12:44,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1270, PETRI_PLACES=95, PETRI_TRANSITIONS=138} [2024-06-28 02:12:44,432 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 02:12:44,432 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 138 transitions, 1270 flow [2024-06-28 02:12:44,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:44,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:44,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:44,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:12:44,433 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:44,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1163151830, now seen corresponding path program 1 times [2024-06-28 02:12:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253547229] [2024-06-28 02:12:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:45,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253547229] [2024-06-28 02:12:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253547229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:45,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:45,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:45,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433513151] [2024-06-28 02:12:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:45,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:45,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 138 transitions, 1270 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:45,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:45,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:46,610 INFO L124 PetriNetUnfolderBase]: 4835/7691 cut-off events. [2024-06-28 02:12:46,610 INFO L125 PetriNetUnfolderBase]: For 35540/35546 co-relation queries the response was YES. [2024-06-28 02:12:46,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29357 conditions, 7691 events. 4835/7691 cut-off events. For 35540/35546 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 48415 event pairs, 1603 based on Foata normal form. 5/7475 useless extension candidates. Maximal degree in co-relation 29318. Up to 6483 conditions per place. [2024-06-28 02:12:46,667 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 146 selfloop transitions, 52 changer transitions 0/207 dead transitions. [2024-06-28 02:12:46,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 207 transitions, 2100 flow [2024-06-28 02:12:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 02:12:46,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 02:12:46,669 INFO L175 Difference]: Start difference. First operand has 95 places, 138 transitions, 1270 flow. Second operand 7 states and 184 transitions. [2024-06-28 02:12:46,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 207 transitions, 2100 flow [2024-06-28 02:12:46,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 207 transitions, 1927 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:46,733 INFO L231 Difference]: Finished difference. Result has 100 places, 152 transitions, 1476 flow [2024-06-28 02:12:46,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1476, PETRI_PLACES=100, PETRI_TRANSITIONS=152} [2024-06-28 02:12:46,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-28 02:12:46,734 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 152 transitions, 1476 flow [2024-06-28 02:12:46,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:46,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:46,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:46,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:12:46,734 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:46,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash 982642510, now seen corresponding path program 4 times [2024-06-28 02:12:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750368382] [2024-06-28 02:12:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:47,386 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 02:12:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750368382] [2024-06-28 02:12:47,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750368382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504008596] [2024-06-28 02:12:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:47,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:47,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 152 transitions, 1476 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:47,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:47,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:47,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:48,587 INFO L124 PetriNetUnfolderBase]: 4819/7337 cut-off events. [2024-06-28 02:12:48,588 INFO L125 PetriNetUnfolderBase]: For 36729/36729 co-relation queries the response was YES. [2024-06-28 02:12:48,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29160 conditions, 7337 events. 4819/7337 cut-off events. For 36729/36729 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 44023 event pairs, 1576 based on Foata normal form. 6/7222 useless extension candidates. Maximal degree in co-relation 29119. Up to 6255 conditions per place. [2024-06-28 02:12:48,642 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 108 selfloop transitions, 83 changer transitions 0/200 dead transitions. [2024-06-28 02:12:48,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 200 transitions, 2051 flow [2024-06-28 02:12:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:12:48,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 02:12:48,644 INFO L175 Difference]: Start difference. First operand has 100 places, 152 transitions, 1476 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:12:48,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 200 transitions, 2051 flow [2024-06-28 02:12:48,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 200 transitions, 1965 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:48,691 INFO L231 Difference]: Finished difference. Result has 106 places, 155 transitions, 1617 flow [2024-06-28 02:12:48,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1617, PETRI_PLACES=106, PETRI_TRANSITIONS=155} [2024-06-28 02:12:48,691 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-28 02:12:48,691 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 155 transitions, 1617 flow [2024-06-28 02:12:48,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:48,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:48,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:12:48,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:48,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash -666484676, now seen corresponding path program 2 times [2024-06-28 02:12:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:48,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898951313] [2024-06-28 02:12:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:48,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898951313] [2024-06-28 02:12:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898951313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:49,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:49,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:49,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876816800] [2024-06-28 02:12:49,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:49,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:49,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:49,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:49,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 155 transitions, 1617 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:49,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:49,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:49,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:50,938 INFO L124 PetriNetUnfolderBase]: 4871/7821 cut-off events. [2024-06-28 02:12:50,938 INFO L125 PetriNetUnfolderBase]: For 39818/39818 co-relation queries the response was YES. [2024-06-28 02:12:50,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30406 conditions, 7821 events. 4871/7821 cut-off events. For 39818/39818 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 50045 event pairs, 1600 based on Foata normal form. 4/7580 useless extension candidates. Maximal degree in co-relation 30362. Up to 6505 conditions per place. [2024-06-28 02:12:51,006 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 147 selfloop transitions, 54 changer transitions 0/210 dead transitions. [2024-06-28 02:12:51,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 210 transitions, 2280 flow [2024-06-28 02:12:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 02:12:51,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 02:12:51,009 INFO L175 Difference]: Start difference. First operand has 106 places, 155 transitions, 1617 flow. Second operand 7 states and 180 transitions. [2024-06-28 02:12:51,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 210 transitions, 2280 flow [2024-06-28 02:12:51,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 210 transitions, 2047 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:51,070 INFO L231 Difference]: Finished difference. Result has 107 places, 158 transitions, 1538 flow [2024-06-28 02:12:51,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1538, PETRI_PLACES=107, PETRI_TRANSITIONS=158} [2024-06-28 02:12:51,071 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-28 02:12:51,071 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 158 transitions, 1538 flow [2024-06-28 02:12:51,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:51,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:51,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:51,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:12:51,072 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:51,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1852473448, now seen corresponding path program 3 times [2024-06-28 02:12:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963261153] [2024-06-28 02:12:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:52,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963261153] [2024-06-28 02:12:52,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963261153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:52,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:52,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150627804] [2024-06-28 02:12:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:52,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:52,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:52,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:52,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 158 transitions, 1538 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:52,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:52,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:52,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:53,297 INFO L124 PetriNetUnfolderBase]: 4861/7804 cut-off events. [2024-06-28 02:12:53,297 INFO L125 PetriNetUnfolderBase]: For 40426/40426 co-relation queries the response was YES. [2024-06-28 02:12:53,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30044 conditions, 7804 events. 4861/7804 cut-off events. For 40426/40426 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 49919 event pairs, 1618 based on Foata normal form. 4/7563 useless extension candidates. Maximal degree in co-relation 30000. Up to 6497 conditions per place. [2024-06-28 02:12:53,359 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 134 selfloop transitions, 60 changer transitions 0/203 dead transitions. [2024-06-28 02:12:53,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 203 transitions, 2080 flow [2024-06-28 02:12:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:12:53,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:12:53,361 INFO L175 Difference]: Start difference. First operand has 107 places, 158 transitions, 1538 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:12:53,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 203 transitions, 2080 flow [2024-06-28 02:12:53,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 203 transitions, 1926 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:53,415 INFO L231 Difference]: Finished difference. Result has 108 places, 158 transitions, 1512 flow [2024-06-28 02:12:53,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=108, PETRI_TRANSITIONS=158} [2024-06-28 02:12:53,416 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 02:12:53,416 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 158 transitions, 1512 flow [2024-06-28 02:12:53,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:53,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:53,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:53,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:12:53,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:53,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:53,418 INFO L85 PathProgramCache]: Analyzing trace with hash -658133524, now seen corresponding path program 1 times [2024-06-28 02:12:53,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:53,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414060135] [2024-06-28 02:12:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:53,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:54,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:54,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414060135] [2024-06-28 02:12:54,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414060135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:54,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:54,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357324637] [2024-06-28 02:12:54,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:54,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:54,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:54,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:54,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:54,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:54,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 158 transitions, 1512 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:54,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:54,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:54,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:55,925 INFO L124 PetriNetUnfolderBase]: 4853/7765 cut-off events. [2024-06-28 02:12:55,925 INFO L125 PetriNetUnfolderBase]: For 42279/42281 co-relation queries the response was YES. [2024-06-28 02:12:55,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29924 conditions, 7765 events. 4853/7765 cut-off events. For 42279/42281 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 49436 event pairs, 1916 based on Foata normal form. 4/7527 useless extension candidates. Maximal degree in co-relation 29880. Up to 6800 conditions per place. [2024-06-28 02:12:55,981 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 168 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2024-06-28 02:12:55,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 199 transitions, 2040 flow [2024-06-28 02:12:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 02:12:55,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-28 02:12:55,983 INFO L175 Difference]: Start difference. First operand has 108 places, 158 transitions, 1512 flow. Second operand 7 states and 171 transitions. [2024-06-28 02:12:55,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 199 transitions, 2040 flow [2024-06-28 02:12:56,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 199 transitions, 1892 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:12:56,041 INFO L231 Difference]: Finished difference. Result has 108 places, 160 transitions, 1447 flow [2024-06-28 02:12:56,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1447, PETRI_PLACES=108, PETRI_TRANSITIONS=160} [2024-06-28 02:12:56,042 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 02:12:56,042 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 160 transitions, 1447 flow [2024-06-28 02:12:56,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:56,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:56,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:56,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:12:56,043 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:56,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -13189089, now seen corresponding path program 1 times [2024-06-28 02:12:56,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:56,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740724481] [2024-06-28 02:12:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:56,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740724481] [2024-06-28 02:12:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740724481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:56,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:56,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:56,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943871679] [2024-06-28 02:12:56,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:56,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:56,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:56,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 160 transitions, 1447 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:56,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:56,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:56,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:57,709 INFO L124 PetriNetUnfolderBase]: 4964/7651 cut-off events. [2024-06-28 02:12:57,709 INFO L125 PetriNetUnfolderBase]: For 46186/46186 co-relation queries the response was YES. [2024-06-28 02:12:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30465 conditions, 7651 events. 4964/7651 cut-off events. For 46186/46186 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 46899 event pairs, 2079 based on Foata normal form. 3/7497 useless extension candidates. Maximal degree in co-relation 30421. Up to 6917 conditions per place. [2024-06-28 02:12:57,760 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 171 selfloop transitions, 21 changer transitions 0/201 dead transitions. [2024-06-28 02:12:57,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 201 transitions, 2086 flow [2024-06-28 02:12:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 02:12:57,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 02:12:57,763 INFO L175 Difference]: Start difference. First operand has 108 places, 160 transitions, 1447 flow. Second operand 6 states and 143 transitions. [2024-06-28 02:12:57,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 201 transitions, 2086 flow [2024-06-28 02:12:57,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 201 transitions, 2023 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:57,806 INFO L231 Difference]: Finished difference. Result has 111 places, 174 transitions, 1597 flow [2024-06-28 02:12:57,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1597, PETRI_PLACES=111, PETRI_TRANSITIONS=174} [2024-06-28 02:12:57,807 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-28 02:12:57,807 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 174 transitions, 1597 flow [2024-06-28 02:12:57,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:57,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:57,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:57,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:12:57,808 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:57,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash -825912843, now seen corresponding path program 1 times [2024-06-28 02:12:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:57,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713863154] [2024-06-28 02:12:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:57,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:58,360 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 02:12:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713863154] [2024-06-28 02:12:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713863154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:58,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:58,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825131174] [2024-06-28 02:12:58,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:58,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:58,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:58,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:58,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 174 transitions, 1597 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:58,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:58,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:58,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:59,403 INFO L124 PetriNetUnfolderBase]: 5004/7737 cut-off events. [2024-06-28 02:12:59,403 INFO L125 PetriNetUnfolderBase]: For 52958/52958 co-relation queries the response was YES. [2024-06-28 02:12:59,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32647 conditions, 7737 events. 5004/7737 cut-off events. For 52958/52958 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47507 event pairs, 2091 based on Foata normal form. 2/7578 useless extension candidates. Maximal degree in co-relation 32600. Up to 7069 conditions per place. [2024-06-28 02:12:59,462 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 180 selfloop transitions, 15 changer transitions 0/204 dead transitions. [2024-06-28 02:12:59,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 204 transitions, 2117 flow [2024-06-28 02:12:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:12:59,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:12:59,464 INFO L175 Difference]: Start difference. First operand has 111 places, 174 transitions, 1597 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:12:59,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 204 transitions, 2117 flow [2024-06-28 02:12:59,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 204 transitions, 2089 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:59,525 INFO L231 Difference]: Finished difference. Result has 116 places, 177 transitions, 1642 flow [2024-06-28 02:12:59,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1642, PETRI_PLACES=116, PETRI_TRANSITIONS=177} [2024-06-28 02:12:59,525 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-28 02:12:59,526 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 177 transitions, 1642 flow [2024-06-28 02:12:59,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:59,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:59,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:59,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:12:59,526 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:59,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:59,527 INFO L85 PathProgramCache]: Analyzing trace with hash -408876683, now seen corresponding path program 2 times [2024-06-28 02:12:59,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:59,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377326350] [2024-06-28 02:12:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:00,024 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 02:13:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377326350] [2024-06-28 02:13:00,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377326350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:00,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:00,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:00,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831481286] [2024-06-28 02:13:00,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:00,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:00,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:00,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:00,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:00,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 177 transitions, 1642 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:00,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:00,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:00,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:01,062 INFO L124 PetriNetUnfolderBase]: 4988/7716 cut-off events. [2024-06-28 02:13:01,063 INFO L125 PetriNetUnfolderBase]: For 56250/56250 co-relation queries the response was YES. [2024-06-28 02:13:01,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32697 conditions, 7716 events. 4988/7716 cut-off events. For 56250/56250 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 47493 event pairs, 2089 based on Foata normal form. 4/7560 useless extension candidates. Maximal degree in co-relation 32647. Up to 6925 conditions per place. [2024-06-28 02:13:01,112 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 171 selfloop transitions, 23 changer transitions 0/203 dead transitions. [2024-06-28 02:13:01,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 203 transitions, 2136 flow [2024-06-28 02:13:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 02:13:01,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 02:13:01,114 INFO L175 Difference]: Start difference. First operand has 116 places, 177 transitions, 1642 flow. Second operand 6 states and 142 transitions. [2024-06-28 02:13:01,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 203 transitions, 2136 flow [2024-06-28 02:13:01,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 203 transitions, 2086 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:01,184 INFO L231 Difference]: Finished difference. Result has 118 places, 177 transitions, 1646 flow [2024-06-28 02:13:01,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1646, PETRI_PLACES=118, PETRI_TRANSITIONS=177} [2024-06-28 02:13:01,184 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 02:13:01,185 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 177 transitions, 1646 flow [2024-06-28 02:13:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:01,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:01,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:01,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:13:01,186 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:01,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1320118277, now seen corresponding path program 1 times [2024-06-28 02:13:01,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:01,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408553486] [2024-06-28 02:13:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:01,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:01,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:01,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408553486] [2024-06-28 02:13:01,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408553486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:01,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:01,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119593895] [2024-06-28 02:13:01,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:01,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:01,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:01,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:01,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:01,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 177 transitions, 1646 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:01,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:01,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:01,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:02,769 INFO L124 PetriNetUnfolderBase]: 5021/7750 cut-off events. [2024-06-28 02:13:02,769 INFO L125 PetriNetUnfolderBase]: For 58701/58709 co-relation queries the response was YES. [2024-06-28 02:13:02,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33109 conditions, 7750 events. 5021/7750 cut-off events. For 58701/58709 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 47540 event pairs, 2081 based on Foata normal form. 6/7594 useless extension candidates. Maximal degree in co-relation 33059. Up to 7094 conditions per place. [2024-06-28 02:13:02,822 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 177 selfloop transitions, 22 changer transitions 0/208 dead transitions. [2024-06-28 02:13:02,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 208 transitions, 2183 flow [2024-06-28 02:13:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:13:02,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:13:02,824 INFO L175 Difference]: Start difference. First operand has 118 places, 177 transitions, 1646 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:13:02,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 208 transitions, 2183 flow [2024-06-28 02:13:02,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 208 transitions, 2120 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:02,912 INFO L231 Difference]: Finished difference. Result has 120 places, 186 transitions, 1722 flow [2024-06-28 02:13:02,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1722, PETRI_PLACES=120, PETRI_TRANSITIONS=186} [2024-06-28 02:13:02,912 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-28 02:13:02,912 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 186 transitions, 1722 flow [2024-06-28 02:13:02,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:02,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:02,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:13:02,913 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:02,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1320298697, now seen corresponding path program 2 times [2024-06-28 02:13:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:02,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186011213] [2024-06-28 02:13:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:02,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:03,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186011213] [2024-06-28 02:13:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186011213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:03,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514387310] [2024-06-28 02:13:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:03,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:03,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:03,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 186 transitions, 1722 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:03,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:03,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:03,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:04,522 INFO L124 PetriNetUnfolderBase]: 5036/8047 cut-off events. [2024-06-28 02:13:04,522 INFO L125 PetriNetUnfolderBase]: For 65424/65432 co-relation queries the response was YES. [2024-06-28 02:13:04,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35099 conditions, 8047 events. 5036/8047 cut-off events. For 65424/65432 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 51160 event pairs, 2038 based on Foata normal form. 6/7800 useless extension candidates. Maximal degree in co-relation 35047. Up to 7074 conditions per place. [2024-06-28 02:13:04,596 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 181 selfloop transitions, 30 changer transitions 0/220 dead transitions. [2024-06-28 02:13:04,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 220 transitions, 2379 flow [2024-06-28 02:13:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:04,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:13:04,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:13:04,597 INFO L175 Difference]: Start difference. First operand has 120 places, 186 transitions, 1722 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:13:04,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 220 transitions, 2379 flow [2024-06-28 02:13:04,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 220 transitions, 2331 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:13:04,691 INFO L231 Difference]: Finished difference. Result has 125 places, 198 transitions, 1889 flow [2024-06-28 02:13:04,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1889, PETRI_PLACES=125, PETRI_TRANSITIONS=198} [2024-06-28 02:13:04,691 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 02:13:04,691 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 198 transitions, 1889 flow [2024-06-28 02:13:04,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:04,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:04,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:04,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:13:04,692 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:04,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -408859819, now seen corresponding path program 1 times [2024-06-28 02:13:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360140347] [2024-06-28 02:13:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:05,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:05,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360140347] [2024-06-28 02:13:05,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360140347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:05,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:05,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:05,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438366950] [2024-06-28 02:13:05,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:05,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:05,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:05,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:05,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:05,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 198 transitions, 1889 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:05,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:05,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:05,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:06,512 INFO L124 PetriNetUnfolderBase]: 5081/8102 cut-off events. [2024-06-28 02:13:06,512 INFO L125 PetriNetUnfolderBase]: For 73101/73101 co-relation queries the response was YES. [2024-06-28 02:13:06,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36769 conditions, 8102 events. 5081/8102 cut-off events. For 73101/73101 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 51299 event pairs, 2010 based on Foata normal form. 3/7851 useless extension candidates. Maximal degree in co-relation 36714. Up to 7014 conditions per place. [2024-06-28 02:13:06,579 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 195 selfloop transitions, 32 changer transitions 0/236 dead transitions. [2024-06-28 02:13:06,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 236 transitions, 2550 flow [2024-06-28 02:13:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:13:06,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 02:13:06,581 INFO L175 Difference]: Start difference. First operand has 125 places, 198 transitions, 1889 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:13:06,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 236 transitions, 2550 flow [2024-06-28 02:13:06,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 236 transitions, 2491 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 02:13:06,673 INFO L231 Difference]: Finished difference. Result has 130 places, 204 transitions, 1977 flow [2024-06-28 02:13:06,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1977, PETRI_PLACES=130, PETRI_TRANSITIONS=204} [2024-06-28 02:13:06,674 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 02:13:06,674 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 204 transitions, 1977 flow [2024-06-28 02:13:06,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:06,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:06,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:06,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:13:06,674 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:06,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -511363701, now seen corresponding path program 1 times [2024-06-28 02:13:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926644296] [2024-06-28 02:13:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:07,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926644296] [2024-06-28 02:13:07,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926644296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:07,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:07,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:07,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094822999] [2024-06-28 02:13:07,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:07,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:07,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:07,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:07,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:07,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:07,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 204 transitions, 1977 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:07,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:07,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:07,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:08,698 INFO L124 PetriNetUnfolderBase]: 5273/8373 cut-off events. [2024-06-28 02:13:08,698 INFO L125 PetriNetUnfolderBase]: For 87280/87280 co-relation queries the response was YES. [2024-06-28 02:13:08,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40346 conditions, 8373 events. 5273/8373 cut-off events. For 87280/87280 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 52837 event pairs, 1567 based on Foata normal form. 8/8136 useless extension candidates. Maximal degree in co-relation 40289. Up to 7046 conditions per place. [2024-06-28 02:13:08,777 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 221 selfloop transitions, 50 changer transitions 0/280 dead transitions. [2024-06-28 02:13:08,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 280 transitions, 2933 flow [2024-06-28 02:13:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:13:08,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 02:13:08,779 INFO L175 Difference]: Start difference. First operand has 130 places, 204 transitions, 1977 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:13:08,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 280 transitions, 2933 flow [2024-06-28 02:13:08,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 280 transitions, 2828 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:08,902 INFO L231 Difference]: Finished difference. Result has 135 places, 212 transitions, 2098 flow [2024-06-28 02:13:08,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2098, PETRI_PLACES=135, PETRI_TRANSITIONS=212} [2024-06-28 02:13:08,903 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 02:13:08,903 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 212 transitions, 2098 flow [2024-06-28 02:13:08,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:08,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:08,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:08,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:13:08,904 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:08,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1516814637, now seen corresponding path program 2 times [2024-06-28 02:13:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:08,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354620187] [2024-06-28 02:13:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:09,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:09,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354620187] [2024-06-28 02:13:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354620187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:09,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:09,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471677793] [2024-06-28 02:13:09,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:09,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:09,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:09,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:09,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 212 transitions, 2098 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:09,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:09,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:09,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:11,026 INFO L124 PetriNetUnfolderBase]: 5257/8380 cut-off events. [2024-06-28 02:13:11,026 INFO L125 PetriNetUnfolderBase]: For 94143/94143 co-relation queries the response was YES. [2024-06-28 02:13:11,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41186 conditions, 8380 events. 5257/8380 cut-off events. For 94143/94143 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 53184 event pairs, 1935 based on Foata normal form. 8/8134 useless extension candidates. Maximal degree in co-relation 41127. Up to 7189 conditions per place. [2024-06-28 02:13:11,095 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 215 selfloop transitions, 45 changer transitions 0/269 dead transitions. [2024-06-28 02:13:11,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 269 transitions, 2847 flow [2024-06-28 02:13:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:13:11,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 02:13:11,096 INFO L175 Difference]: Start difference. First operand has 135 places, 212 transitions, 2098 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:13:11,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 269 transitions, 2847 flow [2024-06-28 02:13:11,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 269 transitions, 2712 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:11,269 INFO L231 Difference]: Finished difference. Result has 138 places, 213 transitions, 2080 flow [2024-06-28 02:13:11,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2080, PETRI_PLACES=138, PETRI_TRANSITIONS=213} [2024-06-28 02:13:11,270 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-28 02:13:11,270 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 213 transitions, 2080 flow [2024-06-28 02:13:11,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:11,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:11,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:11,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:13:11,270 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:11,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:11,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1519616107, now seen corresponding path program 1 times [2024-06-28 02:13:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:11,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413439258] [2024-06-28 02:13:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:12,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413439258] [2024-06-28 02:13:12,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413439258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:12,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:12,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460618260] [2024-06-28 02:13:12,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:12,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:12,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:12,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 213 transitions, 2080 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:12,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:12,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:12,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:13,696 INFO L124 PetriNetUnfolderBase]: 5309/8467 cut-off events. [2024-06-28 02:13:13,696 INFO L125 PetriNetUnfolderBase]: For 96598/96598 co-relation queries the response was YES. [2024-06-28 02:13:13,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41411 conditions, 8467 events. 5309/8467 cut-off events. For 96598/96598 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 53936 event pairs, 1952 based on Foata normal form. 4/8212 useless extension candidates. Maximal degree in co-relation 41350. Up to 7307 conditions per place. [2024-06-28 02:13:13,774 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 210 selfloop transitions, 53 changer transitions 0/272 dead transitions. [2024-06-28 02:13:13,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 272 transitions, 2870 flow [2024-06-28 02:13:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:13:13,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 02:13:13,776 INFO L175 Difference]: Start difference. First operand has 138 places, 213 transitions, 2080 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:13:13,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 272 transitions, 2870 flow [2024-06-28 02:13:13,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 272 transitions, 2784 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:13,928 INFO L231 Difference]: Finished difference. Result has 140 places, 216 transitions, 2157 flow [2024-06-28 02:13:13,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2157, PETRI_PLACES=140, PETRI_TRANSITIONS=216} [2024-06-28 02:13:13,929 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 02:13:13,929 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 216 transitions, 2157 flow [2024-06-28 02:13:13,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:13,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:13,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:13,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:13:13,930 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:13,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1800541451, now seen corresponding path program 3 times [2024-06-28 02:13:13,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:13,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059169394] [2024-06-28 02:13:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:13,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:14,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059169394] [2024-06-28 02:13:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059169394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:14,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:14,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856157011] [2024-06-28 02:13:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:14,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:14,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:14,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 216 transitions, 2157 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:14,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:14,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:14,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:16,132 INFO L124 PetriNetUnfolderBase]: 5393/8586 cut-off events. [2024-06-28 02:13:16,132 INFO L125 PetriNetUnfolderBase]: For 106655/106663 co-relation queries the response was YES. [2024-06-28 02:13:16,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43156 conditions, 8586 events. 5393/8586 cut-off events. For 106655/106663 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 54524 event pairs, 1758 based on Foata normal form. 12/8344 useless extension candidates. Maximal degree in co-relation 43094. Up to 6930 conditions per place. [2024-06-28 02:13:16,207 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 174 selfloop transitions, 93 changer transitions 0/276 dead transitions. [2024-06-28 02:13:16,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 276 transitions, 2979 flow [2024-06-28 02:13:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:13:16,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 02:13:16,209 INFO L175 Difference]: Start difference. First operand has 140 places, 216 transitions, 2157 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:13:16,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 276 transitions, 2979 flow [2024-06-28 02:13:16,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 276 transitions, 2786 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:13:16,378 INFO L231 Difference]: Finished difference. Result has 141 places, 218 transitions, 2201 flow [2024-06-28 02:13:16,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2201, PETRI_PLACES=141, PETRI_TRANSITIONS=218} [2024-06-28 02:13:16,378 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-28 02:13:16,378 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 218 transitions, 2201 flow [2024-06-28 02:13:16,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:16,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:16,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:13:16,379 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:16,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1806975501, now seen corresponding path program 2 times [2024-06-28 02:13:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234660107] [2024-06-28 02:13:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:17,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234660107] [2024-06-28 02:13:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234660107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:17,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:17,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:17,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586051981] [2024-06-28 02:13:17,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:17,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:17,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:17,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:17,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:17,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:17,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 218 transitions, 2201 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:17,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:17,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:17,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:19,088 INFO L124 PetriNetUnfolderBase]: 5507/8772 cut-off events. [2024-06-28 02:13:19,089 INFO L125 PetriNetUnfolderBase]: For 117206/117214 co-relation queries the response was YES. [2024-06-28 02:13:19,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44943 conditions, 8772 events. 5507/8772 cut-off events. For 117206/117214 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 55985 event pairs, 1616 based on Foata normal form. 5/8524 useless extension candidates. Maximal degree in co-relation 44881. Up to 6770 conditions per place. [2024-06-28 02:13:19,173 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 192 selfloop transitions, 93 changer transitions 0/294 dead transitions. [2024-06-28 02:13:19,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 294 transitions, 3375 flow [2024-06-28 02:13:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-28 02:13:19,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2024-06-28 02:13:19,175 INFO L175 Difference]: Start difference. First operand has 141 places, 218 transitions, 2201 flow. Second operand 8 states and 217 transitions. [2024-06-28 02:13:19,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 294 transitions, 3375 flow [2024-06-28 02:13:19,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 294 transitions, 3168 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:19,377 INFO L231 Difference]: Finished difference. Result has 143 places, 227 transitions, 2334 flow [2024-06-28 02:13:19,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2334, PETRI_PLACES=143, PETRI_TRANSITIONS=227} [2024-06-28 02:13:19,378 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 02:13:19,378 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 227 transitions, 2334 flow [2024-06-28 02:13:19,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:19,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:19,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:19,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:13:19,379 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:19,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1807212651, now seen corresponding path program 3 times [2024-06-28 02:13:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796161987] [2024-06-28 02:13:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:20,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:20,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796161987] [2024-06-28 02:13:20,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796161987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:20,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929317090] [2024-06-28 02:13:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:20,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:20,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 227 transitions, 2334 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:20,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:20,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:20,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:22,315 INFO L124 PetriNetUnfolderBase]: 5901/9381 cut-off events. [2024-06-28 02:13:22,315 INFO L125 PetriNetUnfolderBase]: For 130407/130413 co-relation queries the response was YES. [2024-06-28 02:13:22,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49144 conditions, 9381 events. 5901/9381 cut-off events. For 130407/130413 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 60271 event pairs, 1794 based on Foata normal form. 5/9107 useless extension candidates. Maximal degree in co-relation 49081. Up to 7030 conditions per place. [2024-06-28 02:13:22,420 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 197 selfloop transitions, 128 changer transitions 0/334 dead transitions. [2024-06-28 02:13:22,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 334 transitions, 4007 flow [2024-06-28 02:13:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:13:22,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 02:13:22,421 INFO L175 Difference]: Start difference. First operand has 143 places, 227 transitions, 2334 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:13:22,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 334 transitions, 4007 flow [2024-06-28 02:13:22,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 334 transitions, 3840 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 02:13:22,714 INFO L231 Difference]: Finished difference. Result has 154 places, 264 transitions, 3098 flow [2024-06-28 02:13:22,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3098, PETRI_PLACES=154, PETRI_TRANSITIONS=264} [2024-06-28 02:13:22,715 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-28 02:13:22,715 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 264 transitions, 3098 flow [2024-06-28 02:13:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:22,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:22,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:22,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:13:22,716 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:22,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1242685811, now seen corresponding path program 4 times [2024-06-28 02:13:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:22,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465605600] [2024-06-28 02:13:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:22,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:23,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:23,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465605600] [2024-06-28 02:13:23,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465605600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:23,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:23,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:23,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183754673] [2024-06-28 02:13:23,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:23,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:23,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:23,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:23,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:23,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 264 transitions, 3098 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:23,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:23,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:23,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:25,621 INFO L124 PetriNetUnfolderBase]: 6381/10101 cut-off events. [2024-06-28 02:13:25,622 INFO L125 PetriNetUnfolderBase]: For 141438/141446 co-relation queries the response was YES. [2024-06-28 02:13:25,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55134 conditions, 10101 events. 6381/10101 cut-off events. For 141438/141446 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 65155 event pairs, 1829 based on Foata normal form. 7/9821 useless extension candidates. Maximal degree in co-relation 55064. Up to 7381 conditions per place. [2024-06-28 02:13:25,706 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 216 selfloop transitions, 157 changer transitions 0/382 dead transitions. [2024-06-28 02:13:25,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 382 transitions, 4811 flow [2024-06-28 02:13:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 02:13:25,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:13:25,708 INFO L175 Difference]: Start difference. First operand has 154 places, 264 transitions, 3098 flow. Second operand 9 states and 243 transitions. [2024-06-28 02:13:25,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 382 transitions, 4811 flow [2024-06-28 02:13:25,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 382 transitions, 4528 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-28 02:13:25,980 INFO L231 Difference]: Finished difference. Result has 162 places, 296 transitions, 3601 flow [2024-06-28 02:13:25,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3601, PETRI_PLACES=162, PETRI_TRANSITIONS=296} [2024-06-28 02:13:25,981 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-06-28 02:13:25,982 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 296 transitions, 3601 flow [2024-06-28 02:13:25,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:25,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:25,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:13:25,982 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:25,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -535861287, now seen corresponding path program 1 times [2024-06-28 02:13:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:25,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043204843] [2024-06-28 02:13:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:27,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043204843] [2024-06-28 02:13:27,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043204843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:27,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:27,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:27,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28049678] [2024-06-28 02:13:27,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:27,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:27,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:27,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:27,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 296 transitions, 3601 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:27,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:27,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:27,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:29,131 INFO L124 PetriNetUnfolderBase]: 6423/10270 cut-off events. [2024-06-28 02:13:29,131 INFO L125 PetriNetUnfolderBase]: For 150353/150359 co-relation queries the response was YES. [2024-06-28 02:13:29,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56523 conditions, 10270 events. 6423/10270 cut-off events. For 150353/150359 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 67139 event pairs, 1971 based on Foata normal form. 5/9960 useless extension candidates. Maximal degree in co-relation 56449. Up to 8455 conditions per place. [2024-06-28 02:13:29,228 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 278 selfloop transitions, 96 changer transitions 0/383 dead transitions. [2024-06-28 02:13:29,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 383 transitions, 4864 flow [2024-06-28 02:13:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 02:13:29,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-28 02:13:29,229 INFO L175 Difference]: Start difference. First operand has 162 places, 296 transitions, 3601 flow. Second operand 9 states and 235 transitions. [2024-06-28 02:13:29,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 383 transitions, 4864 flow [2024-06-28 02:13:29,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 383 transitions, 4650 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:29,505 INFO L231 Difference]: Finished difference. Result has 167 places, 313 transitions, 3822 flow [2024-06-28 02:13:29,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3822, PETRI_PLACES=167, PETRI_TRANSITIONS=313} [2024-06-28 02:13:29,505 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-28 02:13:29,505 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 313 transitions, 3822 flow [2024-06-28 02:13:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:29,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:29,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:29,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:13:29,506 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:29,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:29,507 INFO L85 PathProgramCache]: Analyzing trace with hash 245120375, now seen corresponding path program 4 times [2024-06-28 02:13:29,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:29,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277101094] [2024-06-28 02:13:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277101094] [2024-06-28 02:13:30,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277101094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:30,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:30,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:30,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446713121] [2024-06-28 02:13:30,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:30,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:30,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:30,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:30,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:30,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:30,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 313 transitions, 3822 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:30,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:30,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:30,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:31,981 INFO L124 PetriNetUnfolderBase]: 6423/10197 cut-off events. [2024-06-28 02:13:31,982 INFO L125 PetriNetUnfolderBase]: For 158648/158648 co-relation queries the response was YES. [2024-06-28 02:13:32,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56502 conditions, 10197 events. 6423/10197 cut-off events. For 158648/158648 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 66099 event pairs, 1807 based on Foata normal form. 8/9896 useless extension candidates. Maximal degree in co-relation 56426. Up to 8242 conditions per place. [2024-06-28 02:13:32,092 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 247 selfloop transitions, 116 changer transitions 0/372 dead transitions. [2024-06-28 02:13:32,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 372 transitions, 4922 flow [2024-06-28 02:13:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:13:32,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 02:13:32,094 INFO L175 Difference]: Start difference. First operand has 167 places, 313 transitions, 3822 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:13:32,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 372 transitions, 4922 flow [2024-06-28 02:13:32,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 372 transitions, 4735 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:32,337 INFO L231 Difference]: Finished difference. Result has 170 places, 315 transitions, 3925 flow [2024-06-28 02:13:32,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3925, PETRI_PLACES=170, PETRI_TRANSITIONS=315} [2024-06-28 02:13:32,338 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-28 02:13:32,338 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 315 transitions, 3925 flow [2024-06-28 02:13:32,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:32,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:32,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:32,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:13:32,339 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:32,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1837585861, now seen corresponding path program 5 times [2024-06-28 02:13:32,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:32,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665429022] [2024-06-28 02:13:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665429022] [2024-06-28 02:13:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665429022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646650900] [2024-06-28 02:13:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:33,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:33,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:33,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 315 transitions, 3925 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:33,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:33,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:33,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:35,462 INFO L124 PetriNetUnfolderBase]: 6519/10351 cut-off events. [2024-06-28 02:13:35,462 INFO L125 PetriNetUnfolderBase]: For 171619/171619 co-relation queries the response was YES. [2024-06-28 02:13:35,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57664 conditions, 10351 events. 6519/10351 cut-off events. For 171619/171619 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 67166 event pairs, 1568 based on Foata normal form. 6/10053 useless extension candidates. Maximal degree in co-relation 57589. Up to 7525 conditions per place. [2024-06-28 02:13:35,548 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 220 selfloop transitions, 159 changer transitions 0/388 dead transitions. [2024-06-28 02:13:35,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 388 transitions, 5304 flow [2024-06-28 02:13:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 02:13:35,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 02:13:35,549 INFO L175 Difference]: Start difference. First operand has 170 places, 315 transitions, 3925 flow. Second operand 8 states and 209 transitions. [2024-06-28 02:13:35,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 388 transitions, 5304 flow [2024-06-28 02:13:35,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 388 transitions, 5042 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:35,817 INFO L231 Difference]: Finished difference. Result has 172 places, 321 transitions, 4108 flow [2024-06-28 02:13:35,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4108, PETRI_PLACES=172, PETRI_TRANSITIONS=321} [2024-06-28 02:13:35,818 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2024-06-28 02:13:35,818 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 321 transitions, 4108 flow [2024-06-28 02:13:35,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:35,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:35,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:35,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:13:35,818 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:35,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1831092601, now seen corresponding path program 6 times [2024-06-28 02:13:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:35,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916836985] [2024-06-28 02:13:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:35,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:36,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916836985] [2024-06-28 02:13:36,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916836985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:36,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:36,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755589630] [2024-06-28 02:13:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:36,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:36,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:36,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 321 transitions, 4108 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:36,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:36,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:36,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:38,769 INFO L124 PetriNetUnfolderBase]: 6615/10508 cut-off events. [2024-06-28 02:13:38,769 INFO L125 PetriNetUnfolderBase]: For 181800/181800 co-relation queries the response was YES. [2024-06-28 02:13:38,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59506 conditions, 10508 events. 6615/10508 cut-off events. For 181800/181800 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 68428 event pairs, 1584 based on Foata normal form. 6/10208 useless extension candidates. Maximal degree in co-relation 59430. Up to 7607 conditions per place. [2024-06-28 02:13:38,887 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 223 selfloop transitions, 166 changer transitions 0/398 dead transitions. [2024-06-28 02:13:38,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 398 transitions, 5571 flow [2024-06-28 02:13:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 02:13:38,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 02:13:38,888 INFO L175 Difference]: Start difference. First operand has 172 places, 321 transitions, 4108 flow. Second operand 9 states and 224 transitions. [2024-06-28 02:13:38,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 398 transitions, 5571 flow [2024-06-28 02:13:39,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 398 transitions, 5175 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:39,208 INFO L231 Difference]: Finished difference. Result has 176 places, 327 transitions, 4183 flow [2024-06-28 02:13:39,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4183, PETRI_PLACES=176, PETRI_TRANSITIONS=327} [2024-06-28 02:13:39,208 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-28 02:13:39,209 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 327 transitions, 4183 flow [2024-06-28 02:13:39,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:39,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:39,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:39,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:13:39,209 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:39,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2110555783, now seen corresponding path program 7 times [2024-06-28 02:13:39,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:39,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068887014] [2024-06-28 02:13:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:39,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:40,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:40,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068887014] [2024-06-28 02:13:40,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068887014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:40,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:40,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:40,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272309012] [2024-06-28 02:13:40,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:40,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:40,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:40,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 327 transitions, 4183 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:40,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:40,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:40,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:42,109 INFO L124 PetriNetUnfolderBase]: 6599/10474 cut-off events. [2024-06-28 02:13:42,109 INFO L125 PetriNetUnfolderBase]: For 181797/181797 co-relation queries the response was YES. [2024-06-28 02:13:42,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58801 conditions, 10474 events. 6599/10474 cut-off events. For 181797/181797 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 68255 event pairs, 1553 based on Foata normal form. 6/10178 useless extension candidates. Maximal degree in co-relation 58724. Up to 7594 conditions per place. [2024-06-28 02:13:42,225 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 193 selfloop transitions, 182 changer transitions 0/384 dead transitions. [2024-06-28 02:13:42,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 384 transitions, 5261 flow [2024-06-28 02:13:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:13:42,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-28 02:13:42,226 INFO L175 Difference]: Start difference. First operand has 176 places, 327 transitions, 4183 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:13:42,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 384 transitions, 5261 flow [2024-06-28 02:13:42,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 384 transitions, 4905 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:42,626 INFO L231 Difference]: Finished difference. Result has 179 places, 327 transitions, 4203 flow [2024-06-28 02:13:42,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4203, PETRI_PLACES=179, PETRI_TRANSITIONS=327} [2024-06-28 02:13:42,626 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-28 02:13:42,627 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 327 transitions, 4203 flow [2024-06-28 02:13:42,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:42,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:42,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:42,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:13:42,627 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:42,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash -750874559, now seen corresponding path program 2 times [2024-06-28 02:13:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:42,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439433359] [2024-06-28 02:13:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:43,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:43,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439433359] [2024-06-28 02:13:43,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439433359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:43,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:43,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919454450] [2024-06-28 02:13:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:43,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:43,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:43,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:43,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 327 transitions, 4203 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:43,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:43,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:43,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:45,695 INFO L124 PetriNetUnfolderBase]: 6641/10664 cut-off events. [2024-06-28 02:13:45,696 INFO L125 PetriNetUnfolderBase]: For 187433/187439 co-relation queries the response was YES. [2024-06-28 02:13:45,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59179 conditions, 10664 events. 6641/10664 cut-off events. For 187433/187439 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 70642 event pairs, 1814 based on Foata normal form. 5/10342 useless extension candidates. Maximal degree in co-relation 59101. Up to 8713 conditions per place. [2024-06-28 02:13:45,816 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 279 selfloop transitions, 100 changer transitions 0/388 dead transitions. [2024-06-28 02:13:45,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 388 transitions, 5305 flow [2024-06-28 02:13:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 02:13:45,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-28 02:13:45,818 INFO L175 Difference]: Start difference. First operand has 179 places, 327 transitions, 4203 flow. Second operand 8 states and 206 transitions. [2024-06-28 02:13:45,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 388 transitions, 5305 flow [2024-06-28 02:13:46,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 388 transitions, 4887 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:13:46,177 INFO L231 Difference]: Finished difference. Result has 179 places, 329 transitions, 4045 flow [2024-06-28 02:13:46,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3785, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4045, PETRI_PLACES=179, PETRI_TRANSITIONS=329} [2024-06-28 02:13:46,178 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-28 02:13:46,178 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 329 transitions, 4045 flow [2024-06-28 02:13:46,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:46,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:46,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:46,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:13:46,179 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:46,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:46,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1205056881, now seen corresponding path program 3 times [2024-06-28 02:13:46,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:46,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998113904] [2024-06-28 02:13:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:46,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:47,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998113904] [2024-06-28 02:13:47,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998113904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:47,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:47,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:47,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504706750] [2024-06-28 02:13:47,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:47,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:47,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:47,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:47,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 329 transitions, 4045 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:47,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:47,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:47,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:49,264 INFO L124 PetriNetUnfolderBase]: 6683/10712 cut-off events. [2024-06-28 02:13:49,264 INFO L125 PetriNetUnfolderBase]: For 192705/192705 co-relation queries the response was YES. [2024-06-28 02:13:49,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59229 conditions, 10712 events. 6683/10712 cut-off events. For 192705/192705 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 70821 event pairs, 1819 based on Foata normal form. 4/10385 useless extension candidates. Maximal degree in co-relation 59150. Up to 8821 conditions per place. [2024-06-28 02:13:49,382 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 284 selfloop transitions, 96 changer transitions 0/389 dead transitions. [2024-06-28 02:13:49,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 389 transitions, 5183 flow [2024-06-28 02:13:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:13:49,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:13:49,388 INFO L175 Difference]: Start difference. First operand has 179 places, 329 transitions, 4045 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:13:49,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 389 transitions, 5183 flow [2024-06-28 02:13:49,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 389 transitions, 4947 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:49,740 INFO L231 Difference]: Finished difference. Result has 182 places, 332 transitions, 4077 flow [2024-06-28 02:13:49,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4077, PETRI_PLACES=182, PETRI_TRANSITIONS=332} [2024-06-28 02:13:49,742 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-28 02:13:49,742 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 332 transitions, 4077 flow [2024-06-28 02:13:49,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:49,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:49,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:49,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:13:49,742 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:49,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:49,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2120684041, now seen corresponding path program 4 times [2024-06-28 02:13:49,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:49,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458930967] [2024-06-28 02:13:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:49,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:50,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458930967] [2024-06-28 02:13:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458930967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:50,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923023327] [2024-06-28 02:13:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:50,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:50,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:50,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 332 transitions, 4077 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:50,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:50,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:50,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:52,764 INFO L124 PetriNetUnfolderBase]: 6725/10805 cut-off events. [2024-06-28 02:13:52,765 INFO L125 PetriNetUnfolderBase]: For 192598/192598 co-relation queries the response was YES. [2024-06-28 02:13:52,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59522 conditions, 10805 events. 6725/10805 cut-off events. For 192598/192598 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 71742 event pairs, 1809 based on Foata normal form. 4/10475 useless extension candidates. Maximal degree in co-relation 59442. Up to 8883 conditions per place. [2024-06-28 02:13:52,860 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 275 selfloop transitions, 101 changer transitions 0/385 dead transitions. [2024-06-28 02:13:52,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 385 transitions, 5131 flow [2024-06-28 02:13:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:13:52,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 02:13:52,862 INFO L175 Difference]: Start difference. First operand has 182 places, 332 transitions, 4077 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:13:52,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 385 transitions, 5131 flow [2024-06-28 02:13:53,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 385 transitions, 4945 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:53,105 INFO L231 Difference]: Finished difference. Result has 185 places, 334 transitions, 4153 flow [2024-06-28 02:13:53,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3891, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4153, PETRI_PLACES=185, PETRI_TRANSITIONS=334} [2024-06-28 02:13:53,105 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-28 02:13:53,105 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 334 transitions, 4153 flow [2024-06-28 02:13:53,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:53,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:53,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:53,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:13:53,106 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:53,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2121040231, now seen corresponding path program 5 times [2024-06-28 02:13:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:53,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782646019] [2024-06-28 02:13:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:53,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:54,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:54,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782646019] [2024-06-28 02:13:54,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782646019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:54,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:54,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113332158] [2024-06-28 02:13:54,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:54,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:54,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:54,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:54,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 334 transitions, 4153 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:54,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:54,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:54,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:56,422 INFO L124 PetriNetUnfolderBase]: 6717/10628 cut-off events. [2024-06-28 02:13:56,422 INFO L125 PetriNetUnfolderBase]: For 199467/199467 co-relation queries the response was YES. [2024-06-28 02:13:56,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59587 conditions, 10628 events. 6717/10628 cut-off events. For 199467/199467 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 69805 event pairs, 1709 based on Foata normal form. 4/10356 useless extension candidates. Maximal degree in co-relation 59505. Up to 8647 conditions per place. [2024-06-28 02:13:56,541 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 267 selfloop transitions, 110 changer transitions 0/386 dead transitions. [2024-06-28 02:13:56,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 386 transitions, 5199 flow [2024-06-28 02:13:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:13:56,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 02:13:56,545 INFO L175 Difference]: Start difference. First operand has 185 places, 334 transitions, 4153 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:13:56,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 386 transitions, 5199 flow [2024-06-28 02:13:56,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 386 transitions, 4963 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:56,887 INFO L231 Difference]: Finished difference. Result has 187 places, 336 transitions, 4200 flow [2024-06-28 02:13:56,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4200, PETRI_PLACES=187, PETRI_TRANSITIONS=336} [2024-06-28 02:13:56,889 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-28 02:13:56,904 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 336 transitions, 4200 flow [2024-06-28 02:13:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:56,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:56,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:56,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:13:56,905 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:56,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2214980, now seen corresponding path program 1 times [2024-06-28 02:13:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:56,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39608982] [2024-06-28 02:13:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:57,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39608982] [2024-06-28 02:13:57,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39608982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526935826] [2024-06-28 02:13:57,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:57,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:57,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:57,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:57,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:57,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 336 transitions, 4200 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:57,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:57,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:57,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:59,388 INFO L124 PetriNetUnfolderBase]: 6714/10674 cut-off events. [2024-06-28 02:13:59,388 INFO L125 PetriNetUnfolderBase]: For 206994/206994 co-relation queries the response was YES. [2024-06-28 02:13:59,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60064 conditions, 10674 events. 6714/10674 cut-off events. For 206994/206994 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 70614 event pairs, 2903 based on Foata normal form. 1/10390 useless extension candidates. Maximal degree in co-relation 59981. Up to 9448 conditions per place. [2024-06-28 02:13:59,681 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 326 selfloop transitions, 25 changer transitions 0/360 dead transitions. [2024-06-28 02:13:59,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 360 transitions, 5023 flow [2024-06-28 02:13:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:13:59,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 02:13:59,683 INFO L175 Difference]: Start difference. First operand has 187 places, 336 transitions, 4200 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:13:59,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 360 transitions, 5023 flow [2024-06-28 02:14:00,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 360 transitions, 4736 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:00,097 INFO L231 Difference]: Finished difference. Result has 187 places, 339 transitions, 4018 flow [2024-06-28 02:14:00,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4018, PETRI_PLACES=187, PETRI_TRANSITIONS=339} [2024-06-28 02:14:00,097 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-28 02:14:00,098 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 339 transitions, 4018 flow [2024-06-28 02:14:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:14:00,098 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:00,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash 638416652, now seen corresponding path program 1 times [2024-06-28 02:14:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405739181] [2024-06-28 02:14:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:00,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:00,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405739181] [2024-06-28 02:14:00,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405739181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:00,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:00,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:00,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615448018] [2024-06-28 02:14:00,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:00,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:00,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:00,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:00,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:00,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:00,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 339 transitions, 4018 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:00,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:00,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:02,510 INFO L124 PetriNetUnfolderBase]: 6862/10842 cut-off events. [2024-06-28 02:14:02,510 INFO L125 PetriNetUnfolderBase]: For 212909/212915 co-relation queries the response was YES. [2024-06-28 02:14:02,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60482 conditions, 10842 events. 6862/10842 cut-off events. For 212909/212915 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 71174 event pairs, 2049 based on Foata normal form. 8/10557 useless extension candidates. Maximal degree in co-relation 60398. Up to 9337 conditions per place. [2024-06-28 02:14:02,635 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 305 selfloop transitions, 79 changer transitions 0/393 dead transitions. [2024-06-28 02:14:02,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 393 transitions, 5317 flow [2024-06-28 02:14:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:14:02,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:14:02,649 INFO L175 Difference]: Start difference. First operand has 187 places, 339 transitions, 4018 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:14:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 393 transitions, 5317 flow [2024-06-28 02:14:03,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 393 transitions, 5271 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:03,140 INFO L231 Difference]: Finished difference. Result has 192 places, 364 transitions, 4523 flow [2024-06-28 02:14:03,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4523, PETRI_PLACES=192, PETRI_TRANSITIONS=364} [2024-06-28 02:14:03,141 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 138 predicate places. [2024-06-28 02:14:03,141 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 364 transitions, 4523 flow [2024-06-28 02:14:03,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:03,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:03,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:14:03,142 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:03,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2020411444, now seen corresponding path program 2 times [2024-06-28 02:14:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2363670] [2024-06-28 02:14:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:03,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:03,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:03,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2363670] [2024-06-28 02:14:03,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2363670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:03,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:03,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768594387] [2024-06-28 02:14:03,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:03,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:03,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:03,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:03,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:03,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 364 transitions, 4523 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:03,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:03,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:03,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:05,702 INFO L124 PetriNetUnfolderBase]: 7061/11124 cut-off events. [2024-06-28 02:14:05,702 INFO L125 PetriNetUnfolderBase]: For 243287/243293 co-relation queries the response was YES. [2024-06-28 02:14:05,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65808 conditions, 11124 events. 7061/11124 cut-off events. For 243287/243293 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 72944 event pairs, 1962 based on Foata normal form. 8/10842 useless extension candidates. Maximal degree in co-relation 65721. Up to 9028 conditions per place. [2024-06-28 02:14:05,810 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 322 selfloop transitions, 93 changer transitions 0/424 dead transitions. [2024-06-28 02:14:05,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 424 transitions, 6008 flow [2024-06-28 02:14:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 02:14:05,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-28 02:14:05,812 INFO L175 Difference]: Start difference. First operand has 192 places, 364 transitions, 4523 flow. Second operand 7 states and 171 transitions. [2024-06-28 02:14:05,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 424 transitions, 6008 flow [2024-06-28 02:14:06,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 424 transitions, 5896 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-06-28 02:14:06,383 INFO L231 Difference]: Finished difference. Result has 200 places, 387 transitions, 4997 flow [2024-06-28 02:14:06,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4997, PETRI_PLACES=200, PETRI_TRANSITIONS=387} [2024-06-28 02:14:06,383 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 02:14:06,384 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 387 transitions, 4997 flow [2024-06-28 02:14:06,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:06,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:06,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:06,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:14:06,384 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:06,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:06,385 INFO L85 PathProgramCache]: Analyzing trace with hash 210238558, now seen corresponding path program 3 times [2024-06-28 02:14:06,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:06,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995235996] [2024-06-28 02:14:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:06,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:06,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995235996] [2024-06-28 02:14:06,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995235996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:06,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:06,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:06,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264031173] [2024-06-28 02:14:06,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:06,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:06,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:06,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:06,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:06,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 387 transitions, 4997 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:06,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:06,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:06,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:08,869 INFO L124 PetriNetUnfolderBase]: 7172/11265 cut-off events. [2024-06-28 02:14:08,869 INFO L125 PetriNetUnfolderBase]: For 265152/265158 co-relation queries the response was YES. [2024-06-28 02:14:08,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69368 conditions, 11265 events. 7172/11265 cut-off events. For 265152/265158 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 73788 event pairs, 1979 based on Foata normal form. 12/10989 useless extension candidates. Maximal degree in co-relation 69276. Up to 9120 conditions per place. [2024-06-28 02:14:09,005 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 317 selfloop transitions, 109 changer transitions 0/435 dead transitions. [2024-06-28 02:14:09,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 435 transitions, 6413 flow [2024-06-28 02:14:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:14:09,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 02:14:09,012 INFO L175 Difference]: Start difference. First operand has 200 places, 387 transitions, 4997 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:14:09,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 435 transitions, 6413 flow [2024-06-28 02:14:09,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 435 transitions, 6194 flow, removed 82 selfloop flow, removed 2 redundant places. [2024-06-28 02:14:09,647 INFO L231 Difference]: Finished difference. Result has 207 places, 404 transitions, 5376 flow [2024-06-28 02:14:09,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5376, PETRI_PLACES=207, PETRI_TRANSITIONS=404} [2024-06-28 02:14:09,648 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 153 predicate places. [2024-06-28 02:14:09,648 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 404 transitions, 5376 flow [2024-06-28 02:14:09,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:09,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:09,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:09,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:14:09,648 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:09,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash 210249470, now seen corresponding path program 1 times [2024-06-28 02:14:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:09,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326447178] [2024-06-28 02:14:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:09,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326447178] [2024-06-28 02:14:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326447178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:10,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:10,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479447846] [2024-06-28 02:14:10,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:10,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:10,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 404 transitions, 5376 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:10,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:10,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:10,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:12,547 INFO L124 PetriNetUnfolderBase]: 7364/11553 cut-off events. [2024-06-28 02:14:12,547 INFO L125 PetriNetUnfolderBase]: For 278477/278477 co-relation queries the response was YES. [2024-06-28 02:14:12,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72096 conditions, 11553 events. 7364/11553 cut-off events. For 278477/278477 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 75725 event pairs, 2105 based on Foata normal form. 14/11284 useless extension candidates. Maximal degree in co-relation 72000. Up to 9972 conditions per place. [2024-06-28 02:14:12,677 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 392 selfloop transitions, 51 changer transitions 0/452 dead transitions. [2024-06-28 02:14:12,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 452 transitions, 6693 flow [2024-06-28 02:14:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:14:12,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 02:14:12,678 INFO L175 Difference]: Start difference. First operand has 207 places, 404 transitions, 5376 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:14:12,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 452 transitions, 6693 flow [2024-06-28 02:14:13,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 452 transitions, 6570 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 02:14:13,278 INFO L231 Difference]: Finished difference. Result has 213 places, 408 transitions, 5461 flow [2024-06-28 02:14:13,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5255, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5461, PETRI_PLACES=213, PETRI_TRANSITIONS=408} [2024-06-28 02:14:13,279 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-28 02:14:13,279 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 408 transitions, 5461 flow [2024-06-28 02:14:13,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:13,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:13,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:13,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:14:13,280 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:13,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash 592675008, now seen corresponding path program 1 times [2024-06-28 02:14:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:13,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260300948] [2024-06-28 02:14:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:13,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260300948] [2024-06-28 02:14:13,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260300948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:13,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:13,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:13,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128129765] [2024-06-28 02:14:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:13,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:13,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:13,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 408 transitions, 5461 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:13,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:13,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:13,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:16,233 INFO L124 PetriNetUnfolderBase]: 7433/11706 cut-off events. [2024-06-28 02:14:16,233 INFO L125 PetriNetUnfolderBase]: For 282537/282537 co-relation queries the response was YES. [2024-06-28 02:14:16,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73711 conditions, 11706 events. 7433/11706 cut-off events. For 282537/282537 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 77169 event pairs, 2310 based on Foata normal form. 1/11409 useless extension candidates. Maximal degree in co-relation 73613. Up to 10353 conditions per place. [2024-06-28 02:14:16,374 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 400 selfloop transitions, 58 changer transitions 0/467 dead transitions. [2024-06-28 02:14:16,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 467 transitions, 6814 flow [2024-06-28 02:14:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:14:16,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:14:16,376 INFO L175 Difference]: Start difference. First operand has 213 places, 408 transitions, 5461 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:14:16,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 467 transitions, 6814 flow [2024-06-28 02:14:17,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 467 transitions, 6662 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:17,123 INFO L231 Difference]: Finished difference. Result has 216 places, 421 transitions, 5652 flow [2024-06-28 02:14:17,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5311, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5652, PETRI_PLACES=216, PETRI_TRANSITIONS=421} [2024-06-28 02:14:17,124 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-28 02:14:17,124 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 421 transitions, 5652 flow [2024-06-28 02:14:17,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:17,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:17,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:17,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:14:17,124 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:17,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -511449516, now seen corresponding path program 2 times [2024-06-28 02:14:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078261689] [2024-06-28 02:14:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:17,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:17,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078261689] [2024-06-28 02:14:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078261689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:17,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:17,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:17,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543640231] [2024-06-28 02:14:17,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:17,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:17,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:17,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:17,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:17,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 421 transitions, 5652 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:17,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:17,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:17,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:20,004 INFO L124 PetriNetUnfolderBase]: 7606/11883 cut-off events. [2024-06-28 02:14:20,005 INFO L125 PetriNetUnfolderBase]: For 293366/293366 co-relation queries the response was YES. [2024-06-28 02:14:20,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75465 conditions, 11883 events. 7606/11883 cut-off events. For 293366/293366 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 77723 event pairs, 1945 based on Foata normal form. 3/11615 useless extension candidates. Maximal degree in co-relation 75365. Up to 10411 conditions per place. [2024-06-28 02:14:20,178 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 441 selfloop transitions, 91 changer transitions 0/541 dead transitions. [2024-06-28 02:14:20,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 541 transitions, 8030 flow [2024-06-28 02:14:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:14:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:14:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-28 02:14:20,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-28 02:14:20,179 INFO L175 Difference]: Start difference. First operand has 216 places, 421 transitions, 5652 flow. Second operand 10 states and 237 transitions. [2024-06-28 02:14:20,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 541 transitions, 8030 flow [2024-06-28 02:14:20,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 541 transitions, 7866 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:20,876 INFO L231 Difference]: Finished difference. Result has 227 places, 488 transitions, 6899 flow [2024-06-28 02:14:20,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5557, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6899, PETRI_PLACES=227, PETRI_TRANSITIONS=488} [2024-06-28 02:14:20,877 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-28 02:14:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 488 transitions, 6899 flow [2024-06-28 02:14:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:20,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:20,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:14:20,879 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:20,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1439836764, now seen corresponding path program 1 times [2024-06-28 02:14:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:20,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363339423] [2024-06-28 02:14:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363339423] [2024-06-28 02:14:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363339423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:21,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:21,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814512903] [2024-06-28 02:14:21,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:21,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:21,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:21,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:21,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 488 transitions, 6899 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:21,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:21,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:21,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:23,580 INFO L124 PetriNetUnfolderBase]: 7636/11916 cut-off events. [2024-06-28 02:14:23,581 INFO L125 PetriNetUnfolderBase]: For 319111/319117 co-relation queries the response was YES. [2024-06-28 02:14:23,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79873 conditions, 11916 events. 7636/11916 cut-off events. For 319111/319117 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 77518 event pairs, 2295 based on Foata normal form. 6/11651 useless extension candidates. Maximal degree in co-relation 79768. Up to 10523 conditions per place. [2024-06-28 02:14:23,736 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 452 selfloop transitions, 78 changer transitions 0/539 dead transitions. [2024-06-28 02:14:23,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 539 transitions, 8323 flow [2024-06-28 02:14:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:14:23,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 02:14:23,737 INFO L175 Difference]: Start difference. First operand has 227 places, 488 transitions, 6899 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:14:23,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 539 transitions, 8323 flow [2024-06-28 02:14:24,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 539 transitions, 8111 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:24,522 INFO L231 Difference]: Finished difference. Result has 232 places, 498 transitions, 7007 flow [2024-06-28 02:14:24,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6688, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7007, PETRI_PLACES=232, PETRI_TRANSITIONS=498} [2024-06-28 02:14:24,523 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-28 02:14:24,523 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 498 transitions, 7007 flow [2024-06-28 02:14:24,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:24,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:24,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:24,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:14:24,524 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:24,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1439656344, now seen corresponding path program 2 times [2024-06-28 02:14:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:24,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647938872] [2024-06-28 02:14:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:25,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:25,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647938872] [2024-06-28 02:14:25,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647938872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:25,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:25,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:25,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080867722] [2024-06-28 02:14:25,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:25,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:25,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:25,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:25,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:25,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 498 transitions, 7007 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:25,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:25,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:25,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:27,300 INFO L124 PetriNetUnfolderBase]: 7741/12048 cut-off events. [2024-06-28 02:14:27,301 INFO L125 PetriNetUnfolderBase]: For 333211/333217 co-relation queries the response was YES. [2024-06-28 02:14:27,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81329 conditions, 12048 events. 7741/12048 cut-off events. For 333211/333217 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 78327 event pairs, 2319 based on Foata normal form. 6/11783 useless extension candidates. Maximal degree in co-relation 81222. Up to 10576 conditions per place. [2024-06-28 02:14:27,461 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 458 selfloop transitions, 87 changer transitions 0/554 dead transitions. [2024-06-28 02:14:27,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 554 transitions, 8703 flow [2024-06-28 02:14:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:14:27,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 02:14:27,462 INFO L175 Difference]: Start difference. First operand has 232 places, 498 transitions, 7007 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:14:27,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 554 transitions, 8703 flow [2024-06-28 02:14:28,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 554 transitions, 8588 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:28,183 INFO L231 Difference]: Finished difference. Result has 238 places, 513 transitions, 7409 flow [2024-06-28 02:14:28,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6892, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7409, PETRI_PLACES=238, PETRI_TRANSITIONS=513} [2024-06-28 02:14:28,183 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-28 02:14:28,183 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 513 transitions, 7409 flow [2024-06-28 02:14:28,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:28,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:28,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:28,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:14:28,184 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:28,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2045048650, now seen corresponding path program 3 times [2024-06-28 02:14:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841662669] [2024-06-28 02:14:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:28,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:28,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841662669] [2024-06-28 02:14:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841662669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606496636] [2024-06-28 02:14:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:28,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:28,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:28,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 513 transitions, 7409 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:28,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:28,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:28,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:31,185 INFO L124 PetriNetUnfolderBase]: 7746/12122 cut-off events. [2024-06-28 02:14:31,186 INFO L125 PetriNetUnfolderBase]: For 342915/342915 co-relation queries the response was YES. [2024-06-28 02:14:31,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81995 conditions, 12122 events. 7746/12122 cut-off events. For 342915/342915 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 79646 event pairs, 2151 based on Foata normal form. 1/11825 useless extension candidates. Maximal degree in co-relation 81886. Up to 10717 conditions per place. [2024-06-28 02:14:31,365 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 450 selfloop transitions, 94 changer transitions 0/553 dead transitions. [2024-06-28 02:14:31,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 553 transitions, 8778 flow [2024-06-28 02:14:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 02:14:31,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-28 02:14:31,367 INFO L175 Difference]: Start difference. First operand has 238 places, 513 transitions, 7409 flow. Second operand 7 states and 171 transitions. [2024-06-28 02:14:31,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 553 transitions, 8778 flow [2024-06-28 02:14:32,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 553 transitions, 8583 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 02:14:32,244 INFO L231 Difference]: Finished difference. Result has 240 places, 518 transitions, 7521 flow [2024-06-28 02:14:32,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7214, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7521, PETRI_PLACES=240, PETRI_TRANSITIONS=518} [2024-06-28 02:14:32,245 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-28 02:14:32,245 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 518 transitions, 7521 flow [2024-06-28 02:14:32,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:32,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:32,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:32,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:14:32,246 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:32,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2044894890, now seen corresponding path program 3 times [2024-06-28 02:14:32,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:32,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402602937] [2024-06-28 02:14:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:32,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:32,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:32,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402602937] [2024-06-28 02:14:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402602937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:32,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698102695] [2024-06-28 02:14:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:32,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:32,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 518 transitions, 7521 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:32,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:32,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:32,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:35,236 INFO L124 PetriNetUnfolderBase]: 7806/12141 cut-off events. [2024-06-28 02:14:35,236 INFO L125 PetriNetUnfolderBase]: For 360385/360391 co-relation queries the response was YES. [2024-06-28 02:14:35,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83531 conditions, 12141 events. 7806/12141 cut-off events. For 360385/360391 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 79021 event pairs, 2125 based on Foata normal form. 8/11877 useless extension candidates. Maximal degree in co-relation 83421. Up to 10715 conditions per place. [2024-06-28 02:14:35,398 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 467 selfloop transitions, 85 changer transitions 0/561 dead transitions. [2024-06-28 02:14:35,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 561 transitions, 9033 flow [2024-06-28 02:14:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:14:35,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:14:35,400 INFO L175 Difference]: Start difference. First operand has 240 places, 518 transitions, 7521 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:14:35,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 561 transitions, 9033 flow [2024-06-28 02:14:36,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 561 transitions, 8822 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:14:36,426 INFO L231 Difference]: Finished difference. Result has 243 places, 528 transitions, 7739 flow [2024-06-28 02:14:36,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7310, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7739, PETRI_PLACES=243, PETRI_TRANSITIONS=528} [2024-06-28 02:14:36,430 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-28 02:14:36,430 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 528 transitions, 7739 flow [2024-06-28 02:14:36,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:36,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:36,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:36,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:14:36,431 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:36,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash -167755366, now seen corresponding path program 4 times [2024-06-28 02:14:36,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:36,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999814957] [2024-06-28 02:14:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:36,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:36,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999814957] [2024-06-28 02:14:36,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999814957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:36,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:36,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853266980] [2024-06-28 02:14:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:36,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:36,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:36,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:36,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:36,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 528 transitions, 7739 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:36,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:36,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:36,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:39,343 INFO L124 PetriNetUnfolderBase]: 7896/12277 cut-off events. [2024-06-28 02:14:39,343 INFO L125 PetriNetUnfolderBase]: For 362127/362133 co-relation queries the response was YES. [2024-06-28 02:14:39,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84442 conditions, 12277 events. 7896/12277 cut-off events. For 362127/362133 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 79972 event pairs, 2140 based on Foata normal form. 6/12009 useless extension candidates. Maximal degree in co-relation 84330. Up to 10685 conditions per place. [2024-06-28 02:14:39,503 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 458 selfloop transitions, 105 changer transitions 0/572 dead transitions. [2024-06-28 02:14:39,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 572 transitions, 9430 flow [2024-06-28 02:14:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:14:39,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:14:39,505 INFO L175 Difference]: Start difference. First operand has 243 places, 528 transitions, 7739 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:14:39,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 572 transitions, 9430 flow [2024-06-28 02:14:40,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 572 transitions, 9241 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:40,695 INFO L231 Difference]: Finished difference. Result has 248 places, 541 transitions, 8145 flow [2024-06-28 02:14:40,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7560, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8145, PETRI_PLACES=248, PETRI_TRANSITIONS=541} [2024-06-28 02:14:40,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-28 02:14:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 541 transitions, 8145 flow [2024-06-28 02:14:40,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:40,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:40,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:40,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:14:40,703 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:40,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:40,704 INFO L85 PathProgramCache]: Analyzing trace with hash -648519116, now seen corresponding path program 5 times [2024-06-28 02:14:40,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:40,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293300775] [2024-06-28 02:14:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:40,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293300775] [2024-06-28 02:14:41,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293300775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:41,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:41,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:41,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858586978] [2024-06-28 02:14:41,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:41,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:41,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:41,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:41,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 541 transitions, 8145 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:41,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:41,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:41,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:43,791 INFO L124 PetriNetUnfolderBase]: 7884/12266 cut-off events. [2024-06-28 02:14:43,791 INFO L125 PetriNetUnfolderBase]: For 362823/362829 co-relation queries the response was YES. [2024-06-28 02:14:43,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84454 conditions, 12266 events. 7884/12266 cut-off events. For 362823/362829 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 79954 event pairs, 2123 based on Foata normal form. 8/11994 useless extension candidates. Maximal degree in co-relation 84340. Up to 10842 conditions per place. [2024-06-28 02:14:43,970 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 477 selfloop transitions, 85 changer transitions 0/571 dead transitions. [2024-06-28 02:14:43,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 571 transitions, 9469 flow [2024-06-28 02:14:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 02:14:43,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 02:14:43,972 INFO L175 Difference]: Start difference. First operand has 248 places, 541 transitions, 8145 flow. Second operand 8 states and 180 transitions. [2024-06-28 02:14:43,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 571 transitions, 9469 flow [2024-06-28 02:14:45,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 571 transitions, 9233 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:45,164 INFO L231 Difference]: Finished difference. Result has 252 places, 541 transitions, 8091 flow [2024-06-28 02:14:45,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7909, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8091, PETRI_PLACES=252, PETRI_TRANSITIONS=541} [2024-06-28 02:14:45,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 02:14:45,165 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 541 transitions, 8091 flow [2024-06-28 02:14:45,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:45,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:45,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:45,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:14:45,166 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:45,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash 73327604, now seen corresponding path program 6 times [2024-06-28 02:14:45,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:45,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768420182] [2024-06-28 02:14:45,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:45,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:45,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768420182] [2024-06-28 02:14:45,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768420182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:45,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:45,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884947878] [2024-06-28 02:14:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:45,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:45,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 541 transitions, 8091 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:45,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:45,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:45,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:48,232 INFO L124 PetriNetUnfolderBase]: 7868/12215 cut-off events. [2024-06-28 02:14:48,232 INFO L125 PetriNetUnfolderBase]: For 355845/355851 co-relation queries the response was YES. [2024-06-28 02:14:48,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83663 conditions, 12215 events. 7868/12215 cut-off events. For 355845/355851 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 79297 event pairs, 2139 based on Foata normal form. 8/11945 useless extension candidates. Maximal degree in co-relation 83548. Up to 10602 conditions per place. [2024-06-28 02:14:48,434 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 456 selfloop transitions, 104 changer transitions 0/569 dead transitions. [2024-06-28 02:14:48,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 569 transitions, 9395 flow [2024-06-28 02:14:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:14:48,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-06-28 02:14:48,436 INFO L175 Difference]: Start difference. First operand has 252 places, 541 transitions, 8091 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:14:48,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 569 transitions, 9395 flow [2024-06-28 02:14:49,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 569 transitions, 9077 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 02:14:49,524 INFO L231 Difference]: Finished difference. Result has 252 places, 541 transitions, 7990 flow [2024-06-28 02:14:49,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7773, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7990, PETRI_PLACES=252, PETRI_TRANSITIONS=541} [2024-06-28 02:14:49,525 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 02:14:49,525 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 541 transitions, 7990 flow [2024-06-28 02:14:49,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:49,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:49,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:49,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:14:49,526 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:49,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2088417228, now seen corresponding path program 7 times [2024-06-28 02:14:49,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:49,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204132290] [2024-06-28 02:14:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:50,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:50,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204132290] [2024-06-28 02:14:50,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204132290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:50,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:50,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978934748] [2024-06-28 02:14:50,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:50,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:50,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:50,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:50,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:50,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:50,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 541 transitions, 7990 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:50,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:50,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:50,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:52,478 INFO L124 PetriNetUnfolderBase]: 7962/12386 cut-off events. [2024-06-28 02:14:52,478 INFO L125 PetriNetUnfolderBase]: For 365468/365474 co-relation queries the response was YES. [2024-06-28 02:14:52,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84599 conditions, 12386 events. 7962/12386 cut-off events. For 365468/365474 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 80764 event pairs, 2023 based on Foata normal form. 10/12119 useless extension candidates. Maximal degree in co-relation 84486. Up to 9951 conditions per place. [2024-06-28 02:14:52,698 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 426 selfloop transitions, 143 changer transitions 0/578 dead transitions. [2024-06-28 02:14:52,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 578 transitions, 9607 flow [2024-06-28 02:14:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:14:52,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 02:14:52,700 INFO L175 Difference]: Start difference. First operand has 252 places, 541 transitions, 7990 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:14:52,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 578 transitions, 9607 flow [2024-06-28 02:14:53,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 578 transitions, 9342 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:14:53,693 INFO L231 Difference]: Finished difference. Result has 252 places, 547 transitions, 8119 flow [2024-06-28 02:14:53,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7725, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8119, PETRI_PLACES=252, PETRI_TRANSITIONS=547} [2024-06-28 02:14:53,693 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 02:14:53,693 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 547 transitions, 8119 flow [2024-06-28 02:14:53,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:53,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:53,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:53,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:14:53,694 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:53,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1155135368, now seen corresponding path program 8 times [2024-06-28 02:14:53,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:53,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716112999] [2024-06-28 02:14:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:53,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:54,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716112999] [2024-06-28 02:14:54,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716112999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:54,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:54,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:54,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380367326] [2024-06-28 02:14:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:54,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:54,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:54,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:54,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 547 transitions, 8119 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:54,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:54,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:54,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:56,809 INFO L124 PetriNetUnfolderBase]: 7940/12358 cut-off events. [2024-06-28 02:14:56,809 INFO L125 PetriNetUnfolderBase]: For 370012/370018 co-relation queries the response was YES. [2024-06-28 02:14:56,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84768 conditions, 12358 events. 7940/12358 cut-off events. For 370012/370018 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 80714 event pairs, 2007 based on Foata normal form. 10/12087 useless extension candidates. Maximal degree in co-relation 84654. Up to 9937 conditions per place. [2024-06-28 02:14:56,997 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 422 selfloop transitions, 145 changer transitions 0/576 dead transitions. [2024-06-28 02:14:56,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 576 transitions, 9532 flow [2024-06-28 02:14:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:14:56,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-28 02:14:56,999 INFO L175 Difference]: Start difference. First operand has 252 places, 547 transitions, 8119 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:14:56,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 576 transitions, 9532 flow [2024-06-28 02:14:58,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 576 transitions, 9027 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:58,286 INFO L231 Difference]: Finished difference. Result has 254 places, 547 transitions, 7915 flow [2024-06-28 02:14:58,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7915, PETRI_PLACES=254, PETRI_TRANSITIONS=547} [2024-06-28 02:14:58,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-28 02:14:58,287 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 547 transitions, 7915 flow [2024-06-28 02:14:58,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:58,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:58,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:58,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:14:58,287 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:58,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1557081612, now seen corresponding path program 1 times [2024-06-28 02:14:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018849771] [2024-06-28 02:14:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:58,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:58,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018849771] [2024-06-28 02:14:58,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018849771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:58,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:58,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:58,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020394865] [2024-06-28 02:14:58,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:58,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:58,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:58,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:59,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:59,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 547 transitions, 7915 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:59,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:59,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:59,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:01,710 INFO L124 PetriNetUnfolderBase]: 7989/12436 cut-off events. [2024-06-28 02:15:01,711 INFO L125 PetriNetUnfolderBase]: For 368903/368909 co-relation queries the response was YES. [2024-06-28 02:15:01,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84562 conditions, 12436 events. 7989/12436 cut-off events. For 368903/368909 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 81231 event pairs, 2020 based on Foata normal form. 7/12164 useless extension candidates. Maximal degree in co-relation 84448. Up to 10066 conditions per place. [2024-06-28 02:15:01,969 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 446 selfloop transitions, 146 changer transitions 0/601 dead transitions. [2024-06-28 02:15:01,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 601 transitions, 9883 flow [2024-06-28 02:15:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:15:01,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:15:01,970 INFO L175 Difference]: Start difference. First operand has 254 places, 547 transitions, 7915 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:15:01,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 601 transitions, 9883 flow [2024-06-28 02:15:03,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 601 transitions, 9490 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:15:03,193 INFO L231 Difference]: Finished difference. Result has 256 places, 573 transitions, 8385 flow [2024-06-28 02:15:03,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7582, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8385, PETRI_PLACES=256, PETRI_TRANSITIONS=573} [2024-06-28 02:15:03,208 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 202 predicate places. [2024-06-28 02:15:03,208 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 573 transitions, 8385 flow [2024-06-28 02:15:03,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:03,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:03,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:03,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:15:03,209 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:03,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1557097422, now seen corresponding path program 2 times [2024-06-28 02:15:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:03,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941554935] [2024-06-28 02:15:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:03,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:03,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:03,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941554935] [2024-06-28 02:15:03,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941554935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:03,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:03,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503572819] [2024-06-28 02:15:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:03,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:03,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:03,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 573 transitions, 8385 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:03,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:03,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:03,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:06,656 INFO L124 PetriNetUnfolderBase]: 7978/12434 cut-off events. [2024-06-28 02:15:06,657 INFO L125 PetriNetUnfolderBase]: For 374794/374800 co-relation queries the response was YES. [2024-06-28 02:15:06,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85393 conditions, 12434 events. 7978/12434 cut-off events. For 374794/374800 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 81354 event pairs, 1991 based on Foata normal form. 7/12162 useless extension candidates. Maximal degree in co-relation 85276. Up to 10217 conditions per place. [2024-06-28 02:15:06,803 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 447 selfloop transitions, 146 changer transitions 0/602 dead transitions. [2024-06-28 02:15:06,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 602 transitions, 9955 flow [2024-06-28 02:15:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:15:06,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:15:06,805 INFO L175 Difference]: Start difference. First operand has 256 places, 573 transitions, 8385 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:15:06,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 602 transitions, 9955 flow [2024-06-28 02:15:07,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 602 transitions, 9722 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:07,897 INFO L231 Difference]: Finished difference. Result has 261 places, 575 transitions, 8568 flow [2024-06-28 02:15:07,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8152, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8568, PETRI_PLACES=261, PETRI_TRANSITIONS=575} [2024-06-28 02:15:07,898 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-28 02:15:07,898 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 575 transitions, 8568 flow [2024-06-28 02:15:07,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:07,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:07,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:07,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:15:07,899 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:07,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash -998328560, now seen corresponding path program 1 times [2024-06-28 02:15:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:07,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305504169] [2024-06-28 02:15:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305504169] [2024-06-28 02:15:08,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305504169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:08,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:08,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080784434] [2024-06-28 02:15:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:08,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:08,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 575 transitions, 8568 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:08,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:08,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:08,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:11,621 INFO L124 PetriNetUnfolderBase]: 8018/12550 cut-off events. [2024-06-28 02:15:11,621 INFO L125 PetriNetUnfolderBase]: For 388994/388994 co-relation queries the response was YES. [2024-06-28 02:15:11,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86564 conditions, 12550 events. 8018/12550 cut-off events. For 388994/388994 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 82615 event pairs, 2830 based on Foata normal form. 2/12266 useless extension candidates. Maximal degree in co-relation 86445. Up to 11165 conditions per place. [2024-06-28 02:15:11,806 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 577 selfloop transitions, 27 changer transitions 0/613 dead transitions. [2024-06-28 02:15:11,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 613 transitions, 10050 flow [2024-06-28 02:15:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:15:11,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-06-28 02:15:11,807 INFO L175 Difference]: Start difference. First operand has 261 places, 575 transitions, 8568 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:15:11,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 613 transitions, 10050 flow [2024-06-28 02:15:13,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 613 transitions, 9850 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:13,169 INFO L231 Difference]: Finished difference. Result has 266 places, 578 transitions, 8490 flow [2024-06-28 02:15:13,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8368, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8490, PETRI_PLACES=266, PETRI_TRANSITIONS=578} [2024-06-28 02:15:13,170 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 212 predicate places. [2024-06-28 02:15:13,170 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 578 transitions, 8490 flow [2024-06-28 02:15:13,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:13,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:13,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:13,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:15:13,170 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:13,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 68666289, now seen corresponding path program 1 times [2024-06-28 02:15:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:13,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686803158] [2024-06-28 02:15:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:13,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:14,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686803158] [2024-06-28 02:15:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686803158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:14,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:14,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:15:14,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243331554] [2024-06-28 02:15:14,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:14,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:15:14,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:15:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:15:14,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:14,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 578 transitions, 8490 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:14,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:14,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:14,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:16,677 INFO L124 PetriNetUnfolderBase]: 8014/12450 cut-off events. [2024-06-28 02:15:16,677 INFO L125 PetriNetUnfolderBase]: For 393270/393270 co-relation queries the response was YES. [2024-06-28 02:15:16,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86451 conditions, 12450 events. 8014/12450 cut-off events. For 393270/393270 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 80924 event pairs, 2115 based on Foata normal form. 2/12177 useless extension candidates. Maximal degree in co-relation 86331. Up to 10678 conditions per place. [2024-06-28 02:15:16,864 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 490 selfloop transitions, 120 changer transitions 0/619 dead transitions. [2024-06-28 02:15:16,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 619 transitions, 10273 flow [2024-06-28 02:15:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:15:16,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 02:15:16,866 INFO L175 Difference]: Start difference. First operand has 266 places, 578 transitions, 8490 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:15:16,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 619 transitions, 10273 flow [2024-06-28 02:15:18,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 619 transitions, 10124 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:18,366 INFO L231 Difference]: Finished difference. Result has 268 places, 592 transitions, 8995 flow [2024-06-28 02:15:18,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8341, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8995, PETRI_PLACES=268, PETRI_TRANSITIONS=592} [2024-06-28 02:15:18,366 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-28 02:15:18,366 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 592 transitions, 8995 flow [2024-06-28 02:15:18,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:18,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:18,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:15:18,367 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:18,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash 73134722, now seen corresponding path program 2 times [2024-06-28 02:15:18,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303325850] [2024-06-28 02:15:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:19,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303325850] [2024-06-28 02:15:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303325850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:19,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374808384] [2024-06-28 02:15:19,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:19,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:19,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:19,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:19,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 592 transitions, 8995 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:19,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:19,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:19,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:21,862 INFO L124 PetriNetUnfolderBase]: 8064/12621 cut-off events. [2024-06-28 02:15:21,862 INFO L125 PetriNetUnfolderBase]: For 412508/412508 co-relation queries the response was YES. [2024-06-28 02:15:21,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87740 conditions, 12621 events. 8064/12621 cut-off events. For 412508/412508 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 83156 event pairs, 2820 based on Foata normal form. 2/12333 useless extension candidates. Maximal degree in co-relation 87619. Up to 11156 conditions per place. [2024-06-28 02:15:22,058 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 588 selfloop transitions, 36 changer transitions 0/633 dead transitions. [2024-06-28 02:15:22,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 633 transitions, 10613 flow [2024-06-28 02:15:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:15:22,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:15:22,060 INFO L175 Difference]: Start difference. First operand has 268 places, 592 transitions, 8995 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:15:22,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 633 transitions, 10613 flow [2024-06-28 02:15:23,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 633 transitions, 10386 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 02:15:23,724 INFO L231 Difference]: Finished difference. Result has 272 places, 598 transitions, 9008 flow [2024-06-28 02:15:23,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8768, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9008, PETRI_PLACES=272, PETRI_TRANSITIONS=598} [2024-06-28 02:15:23,726 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 218 predicate places. [2024-06-28 02:15:23,726 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 598 transitions, 9008 flow [2024-06-28 02:15:23,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:23,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:23,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:23,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:15:23,727 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:23,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1618372996, now seen corresponding path program 1 times [2024-06-28 02:15:23,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:23,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957225850] [2024-06-28 02:15:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:23,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:24,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:24,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957225850] [2024-06-28 02:15:24,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957225850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:24,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:24,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239123741] [2024-06-28 02:15:24,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:24,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:24,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:24,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 598 transitions, 9008 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:24,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:24,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:24,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:27,329 INFO L124 PetriNetUnfolderBase]: 8050/12527 cut-off events. [2024-06-28 02:15:27,330 INFO L125 PetriNetUnfolderBase]: For 421558/421564 co-relation queries the response was YES. [2024-06-28 02:15:27,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87933 conditions, 12527 events. 8050/12527 cut-off events. For 421558/421564 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 81889 event pairs, 2025 based on Foata normal form. 8/12252 useless extension candidates. Maximal degree in co-relation 87810. Up to 10259 conditions per place. [2024-06-28 02:15:27,498 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 438 selfloop transitions, 177 changer transitions 0/624 dead transitions. [2024-06-28 02:15:27,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 624 transitions, 10506 flow [2024-06-28 02:15:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:15:27,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:15:27,499 INFO L175 Difference]: Start difference. First operand has 272 places, 598 transitions, 9008 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:15:27,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 624 transitions, 10506 flow [2024-06-28 02:15:29,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 624 transitions, 10321 flow, removed 80 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:29,050 INFO L231 Difference]: Finished difference. Result has 276 places, 598 transitions, 9196 flow [2024-06-28 02:15:29,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8823, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9196, PETRI_PLACES=276, PETRI_TRANSITIONS=598} [2024-06-28 02:15:29,050 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 222 predicate places. [2024-06-28 02:15:29,050 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 598 transitions, 9196 flow [2024-06-28 02:15:29,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:29,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:29,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:29,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:15:29,051 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:29,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:29,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2081742060, now seen corresponding path program 3 times [2024-06-28 02:15:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179411560] [2024-06-28 02:15:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:29,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:29,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:29,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179411560] [2024-06-28 02:15:29,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179411560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:29,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034742595] [2024-06-28 02:15:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:29,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:29,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:29,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 598 transitions, 9196 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:29,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:29,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:29,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:32,842 INFO L124 PetriNetUnfolderBase]: 8044/12556 cut-off events. [2024-06-28 02:15:32,842 INFO L125 PetriNetUnfolderBase]: For 427328/427334 co-relation queries the response was YES. [2024-06-28 02:15:32,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88613 conditions, 12556 events. 8044/12556 cut-off events. For 427328/427334 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 82463 event pairs, 2737 based on Foata normal form. 3/12285 useless extension candidates. Maximal degree in co-relation 88488. Up to 11059 conditions per place. [2024-06-28 02:15:33,016 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 581 selfloop transitions, 51 changer transitions 0/641 dead transitions. [2024-06-28 02:15:33,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 641 transitions, 10922 flow [2024-06-28 02:15:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:15:33,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:15:33,018 INFO L175 Difference]: Start difference. First operand has 276 places, 598 transitions, 9196 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:15:33,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 641 transitions, 10922 flow [2024-06-28 02:15:34,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 641 transitions, 10510 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:34,340 INFO L231 Difference]: Finished difference. Result has 279 places, 607 transitions, 9168 flow [2024-06-28 02:15:34,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8784, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9168, PETRI_PLACES=279, PETRI_TRANSITIONS=607} [2024-06-28 02:15:34,340 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 225 predicate places. [2024-06-28 02:15:34,341 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 607 transitions, 9168 flow [2024-06-28 02:15:34,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:34,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:34,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:34,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:15:34,341 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:34,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1062035538, now seen corresponding path program 1 times [2024-06-28 02:15:34,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:34,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095182981] [2024-06-28 02:15:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:35,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:35,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095182981] [2024-06-28 02:15:35,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095182981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:35,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:35,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:15:35,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432936450] [2024-06-28 02:15:35,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:35,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:15:35,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:15:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:15:35,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:35,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 607 transitions, 9168 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:35,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:35,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:35,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:38,680 INFO L124 PetriNetUnfolderBase]: 8738/13781 cut-off events. [2024-06-28 02:15:38,680 INFO L125 PetriNetUnfolderBase]: For 503379/503379 co-relation queries the response was YES. [2024-06-28 02:15:38,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97403 conditions, 13781 events. 8738/13781 cut-off events. For 503379/503379 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 92131 event pairs, 2226 based on Foata normal form. 16/13431 useless extension candidates. Maximal degree in co-relation 97275. Up to 11347 conditions per place. [2024-06-28 02:15:38,903 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 606 selfloop transitions, 113 changer transitions 0/728 dead transitions. [2024-06-28 02:15:38,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 728 transitions, 11855 flow [2024-06-28 02:15:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:15:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:15:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-28 02:15:38,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:15:38,905 INFO L175 Difference]: Start difference. First operand has 279 places, 607 transitions, 9168 flow. Second operand 10 states and 260 transitions. [2024-06-28 02:15:38,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 728 transitions, 11855 flow [2024-06-28 02:15:40,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 728 transitions, 11692 flow, removed 72 selfloop flow, removed 2 redundant places. [2024-06-28 02:15:40,634 INFO L231 Difference]: Finished difference. Result has 289 places, 634 transitions, 9737 flow [2024-06-28 02:15:40,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9005, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9737, PETRI_PLACES=289, PETRI_TRANSITIONS=634} [2024-06-28 02:15:40,635 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 235 predicate places. [2024-06-28 02:15:40,635 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 634 transitions, 9737 flow [2024-06-28 02:15:40,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:40,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:40,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:40,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:15:40,636 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:40,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash 93393652, now seen corresponding path program 2 times [2024-06-28 02:15:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332587330] [2024-06-28 02:15:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332587330] [2024-06-28 02:15:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332587330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:41,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:15:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710093679] [2024-06-28 02:15:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:15:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:15:41,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:15:41,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:41,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 634 transitions, 9737 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:41,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:41,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:41,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:44,867 INFO L124 PetriNetUnfolderBase]: 8702/13627 cut-off events. [2024-06-28 02:15:44,868 INFO L125 PetriNetUnfolderBase]: For 493041/493041 co-relation queries the response was YES. [2024-06-28 02:15:45,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96795 conditions, 13627 events. 8702/13627 cut-off events. For 493041/493041 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 90563 event pairs, 2330 based on Foata normal form. 20/13316 useless extension candidates. Maximal degree in co-relation 96663. Up to 11683 conditions per place. [2024-06-28 02:15:45,074 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 593 selfloop transitions, 117 changer transitions 0/719 dead transitions. [2024-06-28 02:15:45,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 719 transitions, 11801 flow [2024-06-28 02:15:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:15:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:15:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 02:15:45,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-28 02:15:45,075 INFO L175 Difference]: Start difference. First operand has 289 places, 634 transitions, 9737 flow. Second operand 10 states and 253 transitions. [2024-06-28 02:15:45,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 719 transitions, 11801 flow [2024-06-28 02:15:46,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 719 transitions, 11669 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:46,919 INFO L231 Difference]: Finished difference. Result has 297 places, 643 transitions, 10071 flow [2024-06-28 02:15:46,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9627, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10071, PETRI_PLACES=297, PETRI_TRANSITIONS=643} [2024-06-28 02:15:46,919 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 243 predicate places. [2024-06-28 02:15:46,920 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 643 transitions, 10071 flow [2024-06-28 02:15:46,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:46,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:46,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:46,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:15:46,920 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:46,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1534962812, now seen corresponding path program 3 times [2024-06-28 02:15:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495165327] [2024-06-28 02:15:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:47,925 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 02:15:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495165327] [2024-06-28 02:15:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495165327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:47,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:47,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:15:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538061160] [2024-06-28 02:15:47,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:47,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:15:47,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:15:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:15:47,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:47,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 643 transitions, 10071 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:47,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:47,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:51,494 INFO L124 PetriNetUnfolderBase]: 9001/14209 cut-off events. [2024-06-28 02:15:51,495 INFO L125 PetriNetUnfolderBase]: For 502649/502649 co-relation queries the response was YES. [2024-06-28 02:15:51,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99159 conditions, 14209 events. 9001/14209 cut-off events. For 502649/502649 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 95448 event pairs, 2255 based on Foata normal form. 16/13851 useless extension candidates. Maximal degree in co-relation 99024. Up to 11419 conditions per place. [2024-06-28 02:15:51,686 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 619 selfloop transitions, 121 changer transitions 0/749 dead transitions. [2024-06-28 02:15:51,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 749 transitions, 12306 flow [2024-06-28 02:15:51,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:15:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:15:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-06-28 02:15:51,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397727272727273 [2024-06-28 02:15:51,688 INFO L175 Difference]: Start difference. First operand has 297 places, 643 transitions, 10071 flow. Second operand 11 states and 285 transitions. [2024-06-28 02:15:51,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 749 transitions, 12306 flow [2024-06-28 02:15:53,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 749 transitions, 12091 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:15:53,128 INFO L231 Difference]: Finished difference. Result has 303 places, 652 transitions, 10302 flow [2024-06-28 02:15:53,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9856, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10302, PETRI_PLACES=303, PETRI_TRANSITIONS=652} [2024-06-28 02:15:53,129 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 249 predicate places. [2024-06-28 02:15:53,129 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 652 transitions, 10302 flow [2024-06-28 02:15:53,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:53,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:53,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:53,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:15:53,129 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:53,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash -623383428, now seen corresponding path program 4 times [2024-06-28 02:15:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:53,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741880850] [2024-06-28 02:15:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:54,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:54,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741880850] [2024-06-28 02:15:54,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741880850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:54,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:54,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:15:54,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096919635] [2024-06-28 02:15:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:54,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:15:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:15:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:15:54,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:15:54,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 652 transitions, 10302 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:54,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:54,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:15:54,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:58,114 INFO L124 PetriNetUnfolderBase]: 9459/14954 cut-off events. [2024-06-28 02:15:58,115 INFO L125 PetriNetUnfolderBase]: For 563566/563572 co-relation queries the response was YES. [2024-06-28 02:15:58,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106579 conditions, 14954 events. 9459/14954 cut-off events. For 563566/563572 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 101178 event pairs, 2241 based on Foata normal form. 17/14592 useless extension candidates. Maximal degree in co-relation 106441. Up to 10750 conditions per place. [2024-06-28 02:15:58,331 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 496 selfloop transitions, 253 changer transitions 0/758 dead transitions. [2024-06-28 02:15:58,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 758 transitions, 12781 flow [2024-06-28 02:15:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:15:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:15:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-06-28 02:15:58,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-28 02:15:58,333 INFO L175 Difference]: Start difference. First operand has 303 places, 652 transitions, 10302 flow. Second operand 10 states and 275 transitions. [2024-06-28 02:15:58,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 758 transitions, 12781 flow [2024-06-28 02:16:00,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 758 transitions, 12475 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 02:16:00,184 INFO L231 Difference]: Finished difference. Result has 307 places, 656 transitions, 10627 flow [2024-06-28 02:16:00,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10000, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10627, PETRI_PLACES=307, PETRI_TRANSITIONS=656} [2024-06-28 02:16:00,184 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 253 predicate places. [2024-06-28 02:16:00,184 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 656 transitions, 10627 flow [2024-06-28 02:16:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:00,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:00,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:16:00,187 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:00,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -618621828, now seen corresponding path program 5 times [2024-06-28 02:16:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:00,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452255669] [2024-06-28 02:16:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:01,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:01,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452255669] [2024-06-28 02:16:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452255669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:01,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:01,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:16:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560838580] [2024-06-28 02:16:01,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:16:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:16:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:16:01,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:01,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 656 transitions, 10627 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:01,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:01,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:01,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:04,973 INFO L124 PetriNetUnfolderBase]: 9649/15312 cut-off events. [2024-06-28 02:16:04,973 INFO L125 PetriNetUnfolderBase]: For 595688/595694 co-relation queries the response was YES. [2024-06-28 02:16:05,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110203 conditions, 15312 events. 9649/15312 cut-off events. For 595688/595694 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 104514 event pairs, 2351 based on Foata normal form. 21/14936 useless extension candidates. Maximal degree in co-relation 110063. Up to 11444 conditions per place. [2024-06-28 02:16:05,252 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 492 selfloop transitions, 252 changer transitions 0/753 dead transitions. [2024-06-28 02:16:05,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 753 transitions, 12827 flow [2024-06-28 02:16:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:16:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:16:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-06-28 02:16:05,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:16:05,253 INFO L175 Difference]: Start difference. First operand has 307 places, 656 transitions, 10627 flow. Second operand 10 states and 270 transitions. [2024-06-28 02:16:05,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 753 transitions, 12827 flow [2024-06-28 02:16:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 753 transitions, 12586 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:16:07,954 INFO L231 Difference]: Finished difference. Result has 313 places, 657 transitions, 10944 flow [2024-06-28 02:16:07,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10392, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10944, PETRI_PLACES=313, PETRI_TRANSITIONS=657} [2024-06-28 02:16:07,955 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2024-06-28 02:16:07,955 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 657 transitions, 10944 flow [2024-06-28 02:16:07,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:07,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:07,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:07,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:16:07,956 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:07,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1492667516, now seen corresponding path program 6 times [2024-06-28 02:16:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:07,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285778655] [2024-06-28 02:16:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:07,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285778655] [2024-06-28 02:16:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285778655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:09,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:09,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:16:09,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372968520] [2024-06-28 02:16:09,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:16:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:09,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:16:09,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:16:09,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:09,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 657 transitions, 10944 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:09,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:09,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:09,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:13,751 INFO L124 PetriNetUnfolderBase]: 9921/15611 cut-off events. [2024-06-28 02:16:13,751 INFO L125 PetriNetUnfolderBase]: For 578305/578311 co-relation queries the response was YES. [2024-06-28 02:16:13,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112533 conditions, 15611 events. 9921/15611 cut-off events. For 578305/578311 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 106713 event pairs, 2625 based on Foata normal form. 24/15263 useless extension candidates. Maximal degree in co-relation 112391. Up to 12291 conditions per place. [2024-06-28 02:16:13,935 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 514 selfloop transitions, 253 changer transitions 0/776 dead transitions. [2024-06-28 02:16:13,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 776 transitions, 13430 flow [2024-06-28 02:16:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:16:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:16:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-06-28 02:16:13,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397727272727273 [2024-06-28 02:16:13,937 INFO L175 Difference]: Start difference. First operand has 313 places, 657 transitions, 10944 flow. Second operand 11 states and 285 transitions. [2024-06-28 02:16:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 776 transitions, 13430 flow [2024-06-28 02:16:15,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 776 transitions, 12842 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:16:15,752 INFO L231 Difference]: Finished difference. Result has 317 places, 676 transitions, 11176 flow [2024-06-28 02:16:15,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10394, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11176, PETRI_PLACES=317, PETRI_TRANSITIONS=676} [2024-06-28 02:16:15,753 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 263 predicate places. [2024-06-28 02:16:15,753 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 676 transitions, 11176 flow [2024-06-28 02:16:15,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:15,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:15,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:16:15,754 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:15,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1501245340, now seen corresponding path program 1 times [2024-06-28 02:16:15,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:15,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300313138] [2024-06-28 02:16:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300313138] [2024-06-28 02:16:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300313138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:17,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:17,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:16:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13336752] [2024-06-28 02:16:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:17,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:16:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:16:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:16:17,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:17,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 676 transitions, 11176 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:17,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:17,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:17,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:21,742 INFO L124 PetriNetUnfolderBase]: 10253/16190 cut-off events. [2024-06-28 02:16:21,743 INFO L125 PetriNetUnfolderBase]: For 609368/609374 co-relation queries the response was YES. [2024-06-28 02:16:21,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116808 conditions, 16190 events. 10253/16190 cut-off events. For 609368/609374 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 111399 event pairs, 2356 based on Foata normal form. 13/15809 useless extension candidates. Maximal degree in co-relation 116664. Up to 11076 conditions per place. [2024-06-28 02:16:21,944 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 475 selfloop transitions, 292 changer transitions 0/776 dead transitions. [2024-06-28 02:16:21,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 776 transitions, 13673 flow [2024-06-28 02:16:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:16:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:16:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-06-28 02:16:21,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:16:21,946 INFO L175 Difference]: Start difference. First operand has 317 places, 676 transitions, 11176 flow. Second operand 10 states and 270 transitions. [2024-06-28 02:16:21,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 776 transitions, 13673 flow [2024-06-28 02:16:24,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 776 transitions, 13283 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:16:24,367 INFO L231 Difference]: Finished difference. Result has 320 places, 678 transitions, 11462 flow [2024-06-28 02:16:24,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10786, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11462, PETRI_PLACES=320, PETRI_TRANSITIONS=678} [2024-06-28 02:16:24,368 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-06-28 02:16:24,368 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 678 transitions, 11462 flow [2024-06-28 02:16:24,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:24,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:24,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:24,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:16:24,368 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:24,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash -555462415, now seen corresponding path program 1 times [2024-06-28 02:16:24,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:24,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919098556] [2024-06-28 02:16:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:24,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:25,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:25,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919098556] [2024-06-28 02:16:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919098556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:25,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:25,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:16:25,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880821032] [2024-06-28 02:16:25,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:25,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:16:25,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:16:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:16:25,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:25,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 678 transitions, 11462 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:25,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:25,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:25,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:29,081 INFO L124 PetriNetUnfolderBase]: 10304/16200 cut-off events. [2024-06-28 02:16:29,081 INFO L125 PetriNetUnfolderBase]: For 618902/618902 co-relation queries the response was YES. [2024-06-28 02:16:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118422 conditions, 16200 events. 10304/16200 cut-off events. For 618902/618902 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 111588 event pairs, 2839 based on Foata normal form. 1/15816 useless extension candidates. Maximal degree in co-relation 118277. Up to 14506 conditions per place. [2024-06-28 02:16:29,326 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 653 selfloop transitions, 55 changer transitions 0/717 dead transitions. [2024-06-28 02:16:29,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 717 transitions, 13197 flow [2024-06-28 02:16:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 02:16:29,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 02:16:29,328 INFO L175 Difference]: Start difference. First operand has 320 places, 678 transitions, 11462 flow. Second operand 8 states and 176 transitions. [2024-06-28 02:16:29,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 717 transitions, 13197 flow [2024-06-28 02:16:31,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 717 transitions, 12790 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:16:31,627 INFO L231 Difference]: Finished difference. Result has 322 places, 690 transitions, 11354 flow [2024-06-28 02:16:31,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11055, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11354, PETRI_PLACES=322, PETRI_TRANSITIONS=690} [2024-06-28 02:16:31,628 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 268 predicate places. [2024-06-28 02:16:31,628 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 690 transitions, 11354 flow [2024-06-28 02:16:31,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:31,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:31,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:31,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:16:31,629 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:31,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:31,629 INFO L85 PathProgramCache]: Analyzing trace with hash -978086006, now seen corresponding path program 7 times [2024-06-28 02:16:31,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:31,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929961331] [2024-06-28 02:16:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:31,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:32,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:32,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929961331] [2024-06-28 02:16:32,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929961331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:32,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:32,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:32,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480925658] [2024-06-28 02:16:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:32,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:32,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:32,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:32,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:32,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 690 transitions, 11354 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:32,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:32,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:32,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:37,577 INFO L124 PetriNetUnfolderBase]: 11720/18697 cut-off events. [2024-06-28 02:16:37,577 INFO L125 PetriNetUnfolderBase]: For 707482/707482 co-relation queries the response was YES. [2024-06-28 02:16:37,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134552 conditions, 18697 events. 11720/18697 cut-off events. For 707482/707482 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 134463 event pairs, 2947 based on Foata normal form. 16/18211 useless extension candidates. Maximal degree in co-relation 134404. Up to 14084 conditions per place. [2024-06-28 02:16:37,850 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 634 selfloop transitions, 215 changer transitions 0/858 dead transitions. [2024-06-28 02:16:37,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 858 transitions, 15088 flow [2024-06-28 02:16:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:16:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:16:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-06-28 02:16:37,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-06-28 02:16:37,852 INFO L175 Difference]: Start difference. First operand has 322 places, 690 transitions, 11354 flow. Second operand 12 states and 314 transitions. [2024-06-28 02:16:37,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 858 transitions, 15088 flow [2024-06-28 02:16:40,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 858 transitions, 15004 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 02:16:40,501 INFO L231 Difference]: Finished difference. Result has 334 places, 748 transitions, 12927 flow [2024-06-28 02:16:40,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11270, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12927, PETRI_PLACES=334, PETRI_TRANSITIONS=748} [2024-06-28 02:16:40,502 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 280 predicate places. [2024-06-28 02:16:40,502 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 748 transitions, 12927 flow [2024-06-28 02:16:40,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:40,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:40,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:40,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:16:40,503 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:40,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash -399762594, now seen corresponding path program 8 times [2024-06-28 02:16:40,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:40,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099384079] [2024-06-28 02:16:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:41,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099384079] [2024-06-28 02:16:41,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099384079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:41,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:41,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:41,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540857167] [2024-06-28 02:16:41,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:41,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:41,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:41,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:41,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:41,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:41,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 748 transitions, 12927 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:41,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:41,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:41,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand