./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe034_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/safe034_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/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe034_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 02:12:29,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:12:29,462 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:12:29,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:12:29,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:12:29,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:12:29,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:12:29,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:12:29,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:12:29,505 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:12:29,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:12:29,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:12:29,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:12:29,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:12:29,507 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:12:29,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:12:29,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:12:29,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:12:29,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:12:29,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:12:29,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:12:29,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:12:29,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:12:29,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:12:29,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:12:29,514 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:12:29,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:12:29,515 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:12:29,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:12:29,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:12:29,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:12:29,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:12:29,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:12:29,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:12:29,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:12:29,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:12:29,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:12:29,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:12:29,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:12:29,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:12:29,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:12:29,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:12:29,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:12:29,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:12:29,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:12:29,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:12:29,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:12:29,765 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:12:29,765 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:12:29,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 02:12:29,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:12:29,923 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:12:29,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:12:30,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:12:31,190 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:12:31,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:12:31,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb34c324/0c9e99fb4101424ea51cf8758fb48236/FLAGe3817044c [2024-06-28 02:12:31,226 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb34c324/0c9e99fb4101424ea51cf8758fb48236 [2024-06-28 02:12:31,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:12:31,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:12:31,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:12:31,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:12:31,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:12:31,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:29" (1/2) ... [2024-06-28 02:12:31,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a5b76 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:31, skipping insertion in model container [2024-06-28 02:12:31,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:29" (1/2) ... [2024-06-28 02:12:31,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3af072e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:31, skipping insertion in model container [2024-06-28 02:12:31,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:12:31" (2/2) ... [2024-06-28 02:12:31,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a5b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31, skipping insertion in model container [2024-06-28 02:12:31,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:12:31" (2/2) ... [2024-06-28 02:12:31,238 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:12:31,311 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:12:31,312 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-28 02:12:31,312 INFO L97 edCorrectnessWitness]: Location invariant before [L833-L833] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-28 02:12:31,312 INFO L97 edCorrectnessWitness]: Location invariant before [L832-L832] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-28 02:12:31,312 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:12:31,312 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-28 02:12:31,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:12:31,543 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/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2024-06-28 02:12:31,668 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:12:31,681 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:12:31,710 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/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:12:31,794 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:12:31,836 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:12:31,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31 WrapperNode [2024-06-28 02:12:31,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:12:31,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:12:31,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:12:31,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:12:31,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,910 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-28 02:12:31,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:12:31,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:12:31,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:12:31,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:12:31,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,943 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 02:12:31,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:12:31,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:12:31,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:12:31,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:12:31,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (1/1) ... [2024-06-28 02:12:31,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:12:31,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:12:31,993 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 02:12:32,019 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 02:12:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:12:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:12:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:12:32,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:12:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:12:32,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:12:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:12:32,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:12:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:12:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:12:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:12:32,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:12:32,036 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 02:12:32,178 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:12:32,182 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:12:32,525 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:12:32,525 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:12:32,642 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:12:32,643 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:12:32,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:12:32 BoogieIcfgContainer [2024-06-28 02:12:32,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:12:32,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:12:32,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:12:32,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:12:32,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:29" (1/4) ... [2024-06-28 02:12:32,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be5880c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:12:32, skipping insertion in model container [2024-06-28 02:12:32,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:12:31" (2/4) ... [2024-06-28 02:12:32,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be5880c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:12:32, skipping insertion in model container [2024-06-28 02:12:32,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:31" (3/4) ... [2024-06-28 02:12:32,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be5880c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:12:32, skipping insertion in model container [2024-06-28 02:12:32,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:12:32" (4/4) ... [2024-06-28 02:12:32,651 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:12:32,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:12:32,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:12:32,665 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:12:32,715 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:12:32,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 02:12:32,804 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 02:12:32,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:12:32,807 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 6. Compared 83 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 02:12:32,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 02:12:32,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 02:12:32,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:12:32,833 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;@6e3792cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:12:32,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:12:32,836 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:12:32,848 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:12:32,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:12:32,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:32,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:12:32,849 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 02:12:32,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash 343427402, now seen corresponding path program 1 times [2024-06-28 02:12:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:32,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979891538] [2024-06-28 02:12:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:33,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:33,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979891538] [2024-06-28 02:12:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979891538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:33,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:33,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:12:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618680980] [2024-06-28 02:12:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:12:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:12:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:12:33,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-28 02:12:33,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:33,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:33,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-28 02:12:33,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:34,305 INFO L124 PetriNetUnfolderBase]: 2349/4045 cut-off events. [2024-06-28 02:12:34,305 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 02:12:34,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 4045 events. 2349/4045 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 27095 event pairs, 1832 based on Foata normal form. 141/3860 useless extension candidates. Maximal degree in co-relation 7511. Up to 3411 conditions per place. [2024-06-28 02:12:34,326 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 39 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 02:12:34,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 221 flow [2024-06-28 02:12:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:12:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:12:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-28 02:12:34,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2024-06-28 02:12:34,338 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 103 transitions. [2024-06-28 02:12:34,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 221 flow [2024-06-28 02:12:34,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:34,342 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 02:12:34,344 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 02:12:34,346 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 02:12:34,347 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 02:12:34,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:34,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:34,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:34,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:12:34,348 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 02:12:34,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash -678695575, now seen corresponding path program 1 times [2024-06-28 02:12:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:34,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101301162] [2024-06-28 02:12:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:34,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:34,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101301162] [2024-06-28 02:12:34,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101301162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:34,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:34,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:12:34,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264952790] [2024-06-28 02:12:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:34,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:12:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:12:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:12:34,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-28 02:12:34,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:34,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:34,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-28 02:12:34,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:35,262 INFO L124 PetriNetUnfolderBase]: 2342/3801 cut-off events. [2024-06-28 02:12:35,263 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-06-28 02:12:35,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 3801 events. 2342/3801 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23488 event pairs, 1295 based on Foata normal form. 3/3544 useless extension candidates. Maximal degree in co-relation 8198. Up to 3378 conditions per place. [2024-06-28 02:12:35,282 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 50 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-28 02:12:35,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 315 flow [2024-06-28 02:12:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:12:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:12:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-28 02:12:35,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-06-28 02:12:35,288 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 134 transitions. [2024-06-28 02:12:35,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 315 flow [2024-06-28 02:12:35,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:35,292 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-28 02:12:35,292 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 02:12:35,293 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 02:12:35,293 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-28 02:12:35,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:35,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:35,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:35,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:12:35,296 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 02:12:35,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash 477542781, now seen corresponding path program 1 times [2024-06-28 02:12:35,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:35,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027690489] [2024-06-28 02:12:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:35,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:35,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027690489] [2024-06-28 02:12:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027690489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:35,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:35,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:35,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415258422] [2024-06-28 02:12:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:35,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:35,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:35,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:35,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:35,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:35,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:36,678 INFO L124 PetriNetUnfolderBase]: 3409/5012 cut-off events. [2024-06-28 02:12:36,679 INFO L125 PetriNetUnfolderBase]: For 1913/1913 co-relation queries the response was YES. [2024-06-28 02:12:36,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12423 conditions, 5012 events. 3409/5012 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28097 event pairs, 1605 based on Foata normal form. 4/4818 useless extension candidates. Maximal degree in co-relation 12408. Up to 4866 conditions per place. [2024-06-28 02:12:36,707 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 56 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-28 02:12:36,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 377 flow [2024-06-28 02:12:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:12:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:12:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-06-28 02:12:36,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2024-06-28 02:12:36,710 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 5 states and 139 transitions. [2024-06-28 02:12:36,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 377 flow [2024-06-28 02:12:36,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 358 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:36,715 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 213 flow [2024-06-28 02:12:36,715 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-28 02:12:36,716 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-28 02:12:36,716 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 213 flow [2024-06-28 02:12:36,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:36,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:36,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:36,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:12:36,717 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 02:12:36,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash 783985063, now seen corresponding path program 1 times [2024-06-28 02:12:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:36,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430736385] [2024-06-28 02:12:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:36,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430736385] [2024-06-28 02:12:37,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430736385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:37,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:37,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:37,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868826085] [2024-06-28 02:12:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:37,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:37,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:37,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-28 02:12:37,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:12:37,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:37,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-28 02:12:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:38,043 INFO L124 PetriNetUnfolderBase]: 2968/4595 cut-off events. [2024-06-28 02:12:38,044 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2024-06-28 02:12:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12075 conditions, 4595 events. 2968/4595 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 27479 event pairs, 860 based on Foata normal form. 6/4393 useless extension candidates. Maximal degree in co-relation 12059. Up to 4191 conditions per place. [2024-06-28 02:12:38,073 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 74 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2024-06-28 02:12:38,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 521 flow [2024-06-28 02:12:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-28 02:12:38,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-06-28 02:12:38,076 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 213 flow. Second operand 6 states and 191 transitions. [2024-06-28 02:12:38,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 521 flow [2024-06-28 02:12:38,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 496 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:38,080 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 271 flow [2024-06-28 02:12:38,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-06-28 02:12:38,084 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 02:12:38,088 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 271 flow [2024-06-28 02:12:38,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:12:38,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:38,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:38,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:12:38,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:38,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1917509892, now seen corresponding path program 1 times [2024-06-28 02:12:38,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:38,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836646832] [2024-06-28 02:12:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:38,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:38,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:38,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836646832] [2024-06-28 02:12:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836646832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:38,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:38,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:12:38,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082652294] [2024-06-28 02:12:38,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:38,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:12:38,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:12:38,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:12:38,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 48 [2024-06-28 02:12:38,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:38,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:38,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 48 [2024-06-28 02:12:38,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:38,322 INFO L124 PetriNetUnfolderBase]: 849/1718 cut-off events. [2024-06-28 02:12:38,322 INFO L125 PetriNetUnfolderBase]: For 1717/1771 co-relation queries the response was YES. [2024-06-28 02:12:38,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 1718 events. 849/1718 cut-off events. For 1717/1771 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12150 event pairs, 210 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 4074. Up to 999 conditions per place. [2024-06-28 02:12:38,332 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 25 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-06-28 02:12:38,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 307 flow [2024-06-28 02:12:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:12:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:12:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-28 02:12:38,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-06-28 02:12:38,333 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 271 flow. Second operand 3 states and 109 transitions. [2024-06-28 02:12:38,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 307 flow [2024-06-28 02:12:38,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 278 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:38,336 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 212 flow [2024-06-28 02:12:38,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-28 02:12:38,337 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 02:12:38,337 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 212 flow [2024-06-28 02:12:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:38,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:38,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:38,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:12:38,338 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 02:12:38,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -19661826, now seen corresponding path program 1 times [2024-06-28 02:12:38,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877382333] [2024-06-28 02:12:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:38,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877382333] [2024-06-28 02:12:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877382333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:38,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552634567] [2024-06-28 02:12:38,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:38,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:38,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:38,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:38,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:38,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:39,655 INFO L124 PetriNetUnfolderBase]: 2962/4489 cut-off events. [2024-06-28 02:12:39,655 INFO L125 PetriNetUnfolderBase]: For 5710/5710 co-relation queries the response was YES. [2024-06-28 02:12:39,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12389 conditions, 4489 events. 2962/4489 cut-off events. For 5710/5710 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 25490 event pairs, 884 based on Foata normal form. 4/4486 useless extension candidates. Maximal degree in co-relation 12371. Up to 4116 conditions per place. [2024-06-28 02:12:39,678 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 68 selfloop transitions, 16 changer transitions 4/100 dead transitions. [2024-06-28 02:12:39,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 530 flow [2024-06-28 02:12:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-28 02:12:39,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 02:12:39,680 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 212 flow. Second operand 6 states and 171 transitions. [2024-06-28 02:12:39,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 530 flow [2024-06-28 02:12:39,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:39,686 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 278 flow [2024-06-28 02:12:39,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-28 02:12:39,686 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-28 02:12:39,687 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 278 flow [2024-06-28 02:12:39,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:39,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:39,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:39,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:12:39,691 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 02:12:39,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash -12757506, now seen corresponding path program 2 times [2024-06-28 02:12:39,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:39,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220720856] [2024-06-28 02:12:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:39,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:40,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:40,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220720856] [2024-06-28 02:12:40,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220720856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:40,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:40,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:40,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081379992] [2024-06-28 02:12:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:40,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:40,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:40,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:40,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:40,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:40,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:40,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:40,943 INFO L124 PetriNetUnfolderBase]: 2581/3932 cut-off events. [2024-06-28 02:12:40,943 INFO L125 PetriNetUnfolderBase]: For 6458/6458 co-relation queries the response was YES. [2024-06-28 02:12:40,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11612 conditions, 3932 events. 2581/3932 cut-off events. For 6458/6458 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22049 event pairs, 809 based on Foata normal form. 4/3930 useless extension candidates. Maximal degree in co-relation 11592. Up to 3601 conditions per place. [2024-06-28 02:12:40,967 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 62 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-06-28 02:12:40,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 500 flow [2024-06-28 02:12:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 02:12:40,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2024-06-28 02:12:40,969 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 278 flow. Second operand 6 states and 161 transitions. [2024-06-28 02:12:40,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 500 flow [2024-06-28 02:12:40,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 470 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:40,977 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 288 flow [2024-06-28 02:12:40,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-06-28 02:12:40,978 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 02:12:40,978 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 288 flow [2024-06-28 02:12:40,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:40,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:40,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:40,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:12:40,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:40,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 186031947, now seen corresponding path program 1 times [2024-06-28 02:12:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613984071] [2024-06-28 02:12:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:41,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:41,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613984071] [2024-06-28 02:12:41,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613984071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:41,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:41,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:41,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430059062] [2024-06-28 02:12:41,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:41,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:41,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:41,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:41,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:12:41,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:41,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:41,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:12:41,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:42,043 INFO L124 PetriNetUnfolderBase]: 2404/4282 cut-off events. [2024-06-28 02:12:42,043 INFO L125 PetriNetUnfolderBase]: For 6743/6743 co-relation queries the response was YES. [2024-06-28 02:12:42,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11534 conditions, 4282 events. 2404/4282 cut-off events. For 6743/6743 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 28539 event pairs, 1155 based on Foata normal form. 1/4127 useless extension candidates. Maximal degree in co-relation 11512. Up to 3475 conditions per place. [2024-06-28 02:12:42,065 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 57 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2024-06-28 02:12:42,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 493 flow [2024-06-28 02:12:42,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:12:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:12:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-28 02:12:42,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:12:42,067 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 288 flow. Second operand 5 states and 130 transitions. [2024-06-28 02:12:42,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 493 flow [2024-06-28 02:12:42,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:42,073 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 322 flow [2024-06-28 02:12:42,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 02:12:42,075 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 02:12:42,075 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 322 flow [2024-06-28 02:12:42,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:42,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:42,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:42,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:12:42,076 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 02:12:42,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1402630307, now seen corresponding path program 1 times [2024-06-28 02:12:42,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:42,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155952941] [2024-06-28 02:12:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:42,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:42,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:42,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155952941] [2024-06-28 02:12:42,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155952941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:42,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:42,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:42,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636289438] [2024-06-28 02:12:42,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:42,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:42,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:42,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:42,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:42,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:43,495 INFO L124 PetriNetUnfolderBase]: 2629/4442 cut-off events. [2024-06-28 02:12:43,495 INFO L125 PetriNetUnfolderBase]: For 8873/8873 co-relation queries the response was YES. [2024-06-28 02:12:43,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13012 conditions, 4442 events. 2629/4442 cut-off events. For 8873/8873 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 27981 event pairs, 1017 based on Foata normal form. 4/4293 useless extension candidates. Maximal degree in co-relation 12989. Up to 3722 conditions per place. [2024-06-28 02:12:43,520 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 83 selfloop transitions, 17 changer transitions 0/112 dead transitions. [2024-06-28 02:12:43,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 646 flow [2024-06-28 02:12:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 02:12:43,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-06-28 02:12:43,522 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 322 flow. Second operand 7 states and 190 transitions. [2024-06-28 02:12:43,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 646 flow [2024-06-28 02:12:43,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 627 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:43,528 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 373 flow [2024-06-28 02:12:43,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-06-28 02:12:43,529 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-28 02:12:43,529 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 373 flow [2024-06-28 02:12:43,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:43,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:43,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:43,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:12:43,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:43,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:43,530 INFO L85 PathProgramCache]: Analyzing trace with hash 665179537, now seen corresponding path program 2 times [2024-06-28 02:12:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:43,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656750257] [2024-06-28 02:12:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:43,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656750257] [2024-06-28 02:12:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656750257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816085988] [2024-06-28 02:12:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:44,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:44,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:44,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:44,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 373 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:44,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:44,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:44,938 INFO L124 PetriNetUnfolderBase]: 2675/4421 cut-off events. [2024-06-28 02:12:44,938 INFO L125 PetriNetUnfolderBase]: For 11417/11417 co-relation queries the response was YES. [2024-06-28 02:12:44,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13986 conditions, 4421 events. 2675/4421 cut-off events. For 11417/11417 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 27103 event pairs, 840 based on Foata normal form. 4/4293 useless extension candidates. Maximal degree in co-relation 13961. Up to 3583 conditions per place. [2024-06-28 02:12:44,960 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 81 selfloop transitions, 28 changer transitions 0/121 dead transitions. [2024-06-28 02:12:44,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 785 flow [2024-06-28 02:12:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-28 02:12:44,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 02:12:44,962 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 373 flow. Second operand 7 states and 196 transitions. [2024-06-28 02:12:44,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 785 flow [2024-06-28 02:12:44,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 739 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:44,969 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 453 flow [2024-06-28 02:12:44,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-28 02:12:44,969 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 02:12:44,969 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 453 flow [2024-06-28 02:12:44,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:44,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:44,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:44,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:12:44,970 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 02:12:44,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash 624991581, now seen corresponding path program 3 times [2024-06-28 02:12:44,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:44,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889908571] [2024-06-28 02:12:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:44,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:45,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889908571] [2024-06-28 02:12:45,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889908571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:45,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:45,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406958383] [2024-06-28 02:12:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:45,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:45,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 453 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:45,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:45,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:45,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:46,258 INFO L124 PetriNetUnfolderBase]: 2665/4123 cut-off events. [2024-06-28 02:12:46,258 INFO L125 PetriNetUnfolderBase]: For 14212/14212 co-relation queries the response was YES. [2024-06-28 02:12:46,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14371 conditions, 4123 events. 2665/4123 cut-off events. For 14212/14212 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23702 event pairs, 786 based on Foata normal form. 4/4089 useless extension candidates. Maximal degree in co-relation 14345. Up to 3575 conditions per place. [2024-06-28 02:12:46,283 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 75 selfloop transitions, 28 changer transitions 0/115 dead transitions. [2024-06-28 02:12:46,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 753 flow [2024-06-28 02:12:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 02:12:46,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-06-28 02:12:46,285 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 453 flow. Second operand 7 states and 190 transitions. [2024-06-28 02:12:46,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 753 flow [2024-06-28 02:12:46,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 699 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:46,300 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 463 flow [2024-06-28 02:12:46,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-06-28 02:12:46,300 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 02:12:46,300 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 463 flow [2024-06-28 02:12:46,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:46,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:46,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:46,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:12:46,301 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 02:12:46,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash 717425403, now seen corresponding path program 1 times [2024-06-28 02:12:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:46,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906706158] [2024-06-28 02:12:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:46,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:47,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906706158] [2024-06-28 02:12:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906706158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:47,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:47,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943956273] [2024-06-28 02:12:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:47,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:47,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:47,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:47,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:47,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:47,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:47,824 INFO L124 PetriNetUnfolderBase]: 2657/4363 cut-off events. [2024-06-28 02:12:47,824 INFO L125 PetriNetUnfolderBase]: For 15692/15692 co-relation queries the response was YES. [2024-06-28 02:12:47,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14764 conditions, 4363 events. 2657/4363 cut-off events. For 15692/15692 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 27096 event pairs, 1044 based on Foata normal form. 4/4272 useless extension candidates. Maximal degree in co-relation 14736. Up to 3772 conditions per place. [2024-06-28 02:12:47,853 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 89 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-28 02:12:47,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 117 transitions, 802 flow [2024-06-28 02:12:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:12:47,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 02:12:47,855 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 463 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:12:47,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 117 transitions, 802 flow [2024-06-28 02:12:47,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 724 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:47,869 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 478 flow [2024-06-28 02:12:47,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-06-28 02:12:47,870 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-28 02:12:47,870 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 478 flow [2024-06-28 02:12:47,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:47,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:47,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:47,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:12:47,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:47,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1458618720, now seen corresponding path program 1 times [2024-06-28 02:12:47,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:47,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740030313] [2024-06-28 02:12:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:47,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740030313] [2024-06-28 02:12:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740030313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:48,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:48,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687935106] [2024-06-28 02:12:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:48,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:48,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:48,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:12:48,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:48,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:48,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:12:48,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:48,998 INFO L124 PetriNetUnfolderBase]: 2481/4224 cut-off events. [2024-06-28 02:12:48,998 INFO L125 PetriNetUnfolderBase]: For 18024/18032 co-relation queries the response was YES. [2024-06-28 02:12:49,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 4224 events. 2481/4224 cut-off events. For 18024/18032 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 27368 event pairs, 1052 based on Foata normal form. 7/4093 useless extension candidates. Maximal degree in co-relation 14625. Up to 3487 conditions per place. [2024-06-28 02:12:49,024 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 79 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-06-28 02:12:49,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 836 flow [2024-06-28 02:12:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 02:12:49,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-28 02:12:49,026 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 478 flow. Second operand 6 states and 159 transitions. [2024-06-28 02:12:49,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 836 flow [2024-06-28 02:12:49,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 789 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:49,038 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 611 flow [2024-06-28 02:12:49,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=611, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-06-28 02:12:49,038 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 02:12:49,038 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 611 flow [2024-06-28 02:12:49,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:49,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:49,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:49,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:12:49,039 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:49,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1611059146, now seen corresponding path program 1 times [2024-06-28 02:12:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:49,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879368238] [2024-06-28 02:12:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:49,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:49,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879368238] [2024-06-28 02:12:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879368238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:49,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971244682] [2024-06-28 02:12:49,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:49,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:49,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:12:49,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 611 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:49,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:49,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:12:49,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:50,143 INFO L124 PetriNetUnfolderBase]: 2543/4342 cut-off events. [2024-06-28 02:12:50,143 INFO L125 PetriNetUnfolderBase]: For 22019/22033 co-relation queries the response was YES. [2024-06-28 02:12:50,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16374 conditions, 4342 events. 2543/4342 cut-off events. For 22019/22033 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28026 event pairs, 1085 based on Foata normal form. 12/4216 useless extension candidates. Maximal degree in co-relation 16341. Up to 3622 conditions per place. [2024-06-28 02:12:50,175 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 95 selfloop transitions, 24 changer transitions 0/135 dead transitions. [2024-06-28 02:12:50,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1011 flow [2024-06-28 02:12:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 02:12:50,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 02:12:50,176 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 611 flow. Second operand 7 states and 186 transitions. [2024-06-28 02:12:50,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1011 flow [2024-06-28 02:12:50,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 983 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:50,196 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 752 flow [2024-06-28 02:12:50,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2024-06-28 02:12:50,197 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-28 02:12:50,197 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 752 flow [2024-06-28 02:12:50,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:50,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:50,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:50,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:12:50,198 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:50,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:50,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1611472210, now seen corresponding path program 2 times [2024-06-28 02:12:50,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:50,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676852557] [2024-06-28 02:12:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:50,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:50,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:50,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676852557] [2024-06-28 02:12:50,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676852557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:50,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:50,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:50,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329841492] [2024-06-28 02:12:50,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:50,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:12:50,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:50,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:50,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:12:50,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:51,403 INFO L124 PetriNetUnfolderBase]: 2557/4378 cut-off events. [2024-06-28 02:12:51,404 INFO L125 PetriNetUnfolderBase]: For 24389/24433 co-relation queries the response was YES. [2024-06-28 02:12:51,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16913 conditions, 4378 events. 2557/4378 cut-off events. For 24389/24433 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28455 event pairs, 1058 based on Foata normal form. 12/4249 useless extension candidates. Maximal degree in co-relation 16876. Up to 3622 conditions per place. [2024-06-28 02:12:51,434 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 93 selfloop transitions, 24 changer transitions 0/133 dead transitions. [2024-06-28 02:12:51,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1090 flow [2024-06-28 02:12:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 02:12:51,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-28 02:12:51,435 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 752 flow. Second operand 6 states and 159 transitions. [2024-06-28 02:12:51,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1090 flow [2024-06-28 02:12:51,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 1032 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:51,458 INFO L231 Difference]: Finished difference. Result has 94 places, 111 transitions, 796 flow [2024-06-28 02:12:51,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=796, PETRI_PLACES=94, PETRI_TRANSITIONS=111} [2024-06-28 02:12:51,458 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-28 02:12:51,458 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 111 transitions, 796 flow [2024-06-28 02:12:51,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:51,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:51,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:12:51,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:51,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1611890710, now seen corresponding path program 3 times [2024-06-28 02:12:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940376069] [2024-06-28 02:12:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940376069] [2024-06-28 02:12:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940376069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400531244] [2024-06-28 02:12:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:52,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:12:52,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 111 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:52,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:52,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:12:52,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:52,608 INFO L124 PetriNetUnfolderBase]: 2549/4358 cut-off events. [2024-06-28 02:12:52,608 INFO L125 PetriNetUnfolderBase]: For 26019/26038 co-relation queries the response was YES. [2024-06-28 02:12:52,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17009 conditions, 4358 events. 2549/4358 cut-off events. For 26019/26038 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 28301 event pairs, 1058 based on Foata normal form. 12/4226 useless extension candidates. Maximal degree in co-relation 16972. Up to 3529 conditions per place. [2024-06-28 02:12:52,633 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 83 selfloop transitions, 31 changer transitions 0/130 dead transitions. [2024-06-28 02:12:52,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 1084 flow [2024-06-28 02:12:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 02:12:52,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-28 02:12:52,634 INFO L175 Difference]: Start difference. First operand has 94 places, 111 transitions, 796 flow. Second operand 6 states and 158 transitions. [2024-06-28 02:12:52,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 1084 flow [2024-06-28 02:12:52,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 130 transitions, 1014 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:52,660 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 796 flow [2024-06-28 02:12:52,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=796, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-28 02:12:52,661 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-28 02:12:52,661 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 796 flow [2024-06-28 02:12:52,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:52,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:52,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:52,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:12:52,661 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:52,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1605000836, now seen corresponding path program 1 times [2024-06-28 02:12:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359354496] [2024-06-28 02:12:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359354496] [2024-06-28 02:12:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359354496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:53,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:53,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:53,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818426817] [2024-06-28 02:12:53,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:53,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:53,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:53,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:53,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:53,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:53,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 796 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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 02:12:53,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:53,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:53,900 INFO L124 PetriNetUnfolderBase]: 2841/4764 cut-off events. [2024-06-28 02:12:53,900 INFO L125 PetriNetUnfolderBase]: For 25872/25874 co-relation queries the response was YES. [2024-06-28 02:12:53,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18364 conditions, 4764 events. 2841/4764 cut-off events. For 25872/25874 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 30441 event pairs, 1100 based on Foata normal form. 2/4641 useless extension candidates. Maximal degree in co-relation 18326. Up to 4062 conditions per place. [2024-06-28 02:12:53,930 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 113 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-06-28 02:12:53,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 140 transitions, 1181 flow [2024-06-28 02:12:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:12:53,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:12:53,932 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 796 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:12:53,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 140 transitions, 1181 flow [2024-06-28 02:12:53,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 140 transitions, 1097 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:53,962 INFO L231 Difference]: Finished difference. Result has 100 places, 120 transitions, 839 flow [2024-06-28 02:12:53,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=839, PETRI_PLACES=100, PETRI_TRANSITIONS=120} [2024-06-28 02:12:53,963 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-28 02:12:53,963 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 120 transitions, 839 flow [2024-06-28 02:12:53,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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 02:12:53,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:53,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:53,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:12:53,963 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 02:12:53,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2027468216, now seen corresponding path program 2 times [2024-06-28 02:12:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525946598] [2024-06-28 02:12:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:54,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525946598] [2024-06-28 02:12:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525946598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:54,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171420249] [2024-06-28 02:12:54,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:54,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:54,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:54,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 120 transitions, 839 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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 02:12:54,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:54,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:54,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:55,260 INFO L124 PetriNetUnfolderBase]: 2860/4786 cut-off events. [2024-06-28 02:12:55,260 INFO L125 PetriNetUnfolderBase]: For 29502/29504 co-relation queries the response was YES. [2024-06-28 02:12:55,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19111 conditions, 4786 events. 2860/4786 cut-off events. For 29502/29504 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 30601 event pairs, 1093 based on Foata normal form. 2/4662 useless extension candidates. Maximal degree in co-relation 19070. Up to 4057 conditions per place. [2024-06-28 02:12:55,288 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 111 selfloop transitions, 20 changer transitions 0/143 dead transitions. [2024-06-28 02:12:55,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 143 transitions, 1203 flow [2024-06-28 02:12:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:12:55,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:12:55,290 INFO L175 Difference]: Start difference. First operand has 100 places, 120 transitions, 839 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:12:55,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 143 transitions, 1203 flow [2024-06-28 02:12:55,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 143 transitions, 1156 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:55,317 INFO L231 Difference]: Finished difference. Result has 104 places, 123 transitions, 878 flow [2024-06-28 02:12:55,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=104, PETRI_TRANSITIONS=123} [2024-06-28 02:12:55,317 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 02:12:55,317 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 123 transitions, 878 flow [2024-06-28 02:12:55,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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 02:12:55,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:55,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:12:55,318 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 02:12:55,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1611873846, now seen corresponding path program 1 times [2024-06-28 02:12:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382488765] [2024-06-28 02:12:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:56,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:56,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382488765] [2024-06-28 02:12:56,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382488765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:56,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300980949] [2024-06-28 02:12:56,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:56,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:56,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:56,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:12:56,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 123 transitions, 878 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:56,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:56,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:12:56,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:56,803 INFO L124 PetriNetUnfolderBase]: 2614/4582 cut-off events. [2024-06-28 02:12:56,803 INFO L125 PetriNetUnfolderBase]: For 32580/32620 co-relation queries the response was YES. [2024-06-28 02:12:56,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18793 conditions, 4582 events. 2614/4582 cut-off events. For 32580/32620 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 30318 event pairs, 1031 based on Foata normal form. 15/4418 useless extension candidates. Maximal degree in co-relation 18751. Up to 3555 conditions per place. [2024-06-28 02:12:56,839 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 95 selfloop transitions, 49 changer transitions 0/160 dead transitions. [2024-06-28 02:12:56,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 160 transitions, 1380 flow [2024-06-28 02:12:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 02:12:56,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 02:12:56,842 INFO L175 Difference]: Start difference. First operand has 104 places, 123 transitions, 878 flow. Second operand 7 states and 184 transitions. [2024-06-28 02:12:56,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 160 transitions, 1380 flow [2024-06-28 02:12:56,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 160 transitions, 1316 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:56,875 INFO L231 Difference]: Finished difference. Result has 108 places, 135 transitions, 1091 flow [2024-06-28 02:12:56,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1091, PETRI_PLACES=108, PETRI_TRANSITIONS=135} [2024-06-28 02:12:56,876 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 02:12:56,876 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 135 transitions, 1091 flow [2024-06-28 02:12:56,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:56,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:56,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:56,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:12:56,877 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:56,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:56,877 INFO L85 PathProgramCache]: Analyzing trace with hash -637508838, now seen corresponding path program 1 times [2024-06-28 02:12:56,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:56,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503384175] [2024-06-28 02:12:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503384175] [2024-06-28 02:12:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503384175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:57,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:57,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835169867] [2024-06-28 02:12:57,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:57,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:57,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:57,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 135 transitions, 1091 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:57,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:57,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:57,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:58,652 INFO L124 PetriNetUnfolderBase]: 3234/5588 cut-off events. [2024-06-28 02:12:58,653 INFO L125 PetriNetUnfolderBase]: For 46695/46695 co-relation queries the response was YES. [2024-06-28 02:12:58,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24525 conditions, 5588 events. 3234/5588 cut-off events. For 46695/46695 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 37340 event pairs, 891 based on Foata normal form. 16/5432 useless extension candidates. Maximal degree in co-relation 24480. Up to 4083 conditions per place. [2024-06-28 02:12:58,695 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 161 selfloop transitions, 32 changer transitions 0/205 dead transitions. [2024-06-28 02:12:58,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 205 transitions, 1819 flow [2024-06-28 02:12:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-28 02:12:58,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-06-28 02:12:58,697 INFO L175 Difference]: Start difference. First operand has 108 places, 135 transitions, 1091 flow. Second operand 9 states and 250 transitions. [2024-06-28 02:12:58,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 205 transitions, 1819 flow [2024-06-28 02:12:58,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 205 transitions, 1719 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:58,751 INFO L231 Difference]: Finished difference. Result has 115 places, 137 transitions, 1101 flow [2024-06-28 02:12:58,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1101, PETRI_PLACES=115, PETRI_TRANSITIONS=137} [2024-06-28 02:12:58,752 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 02:12:58,752 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 137 transitions, 1101 flow [2024-06-28 02:12:58,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:58,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:58,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:58,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:12:58,752 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:58,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:58,753 INFO L85 PathProgramCache]: Analyzing trace with hash 581832986, now seen corresponding path program 2 times [2024-06-28 02:12:58,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:58,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127802301] [2024-06-28 02:12:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:59,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127802301] [2024-06-28 02:12:59,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127802301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:59,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:59,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:59,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494994412] [2024-06-28 02:12:59,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:59,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:59,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:59,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:59,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:12:59,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 137 transitions, 1101 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:59,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:59,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:12:59,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:00,570 INFO L124 PetriNetUnfolderBase]: 3198/5388 cut-off events. [2024-06-28 02:13:00,571 INFO L125 PetriNetUnfolderBase]: For 45534/45534 co-relation queries the response was YES. [2024-06-28 02:13:00,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23582 conditions, 5388 events. 3198/5388 cut-off events. For 45534/45534 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 35268 event pairs, 1144 based on Foata normal form. 20/5268 useless extension candidates. Maximal degree in co-relation 23535. Up to 4299 conditions per place. [2024-06-28 02:13:00,670 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 150 selfloop transitions, 29 changer transitions 0/191 dead transitions. [2024-06-28 02:13:00,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 191 transitions, 1655 flow [2024-06-28 02:13:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 02:13:00,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-28 02:13:00,671 INFO L175 Difference]: Start difference. First operand has 115 places, 137 transitions, 1101 flow. Second operand 8 states and 219 transitions. [2024-06-28 02:13:00,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 191 transitions, 1655 flow [2024-06-28 02:13:00,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 191 transitions, 1607 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:00,710 INFO L231 Difference]: Finished difference. Result has 118 places, 137 transitions, 1118 flow [2024-06-28 02:13:00,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1118, PETRI_PLACES=118, PETRI_TRANSITIONS=137} [2024-06-28 02:13:00,711 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 02:13:00,711 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 137 transitions, 1118 flow [2024-06-28 02:13:00,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:00,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:00,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:13:00,712 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:00,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash -546897970, now seen corresponding path program 3 times [2024-06-28 02:13:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791819676] [2024-06-28 02:13:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:01,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:01,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791819676] [2024-06-28 02:13:01,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791819676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:01,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:01,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:01,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413607816] [2024-06-28 02:13:01,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:01,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:01,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:01,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:01,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 137 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:01,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:01,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:01,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:02,381 INFO L124 PetriNetUnfolderBase]: 3365/5680 cut-off events. [2024-06-28 02:13:02,381 INFO L125 PetriNetUnfolderBase]: For 50044/50046 co-relation queries the response was YES. [2024-06-28 02:13:02,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25000 conditions, 5680 events. 3365/5680 cut-off events. For 50044/50046 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37628 event pairs, 1095 based on Foata normal form. 20/5549 useless extension candidates. Maximal degree in co-relation 24951. Up to 4352 conditions per place. [2024-06-28 02:13:02,420 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 134 selfloop transitions, 44 changer transitions 0/190 dead transitions. [2024-06-28 02:13:02,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 190 transitions, 1690 flow [2024-06-28 02:13:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-28 02:13:02,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807291666666666 [2024-06-28 02:13:02,422 INFO L175 Difference]: Start difference. First operand has 118 places, 137 transitions, 1118 flow. Second operand 8 states and 223 transitions. [2024-06-28 02:13:02,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 190 transitions, 1690 flow [2024-06-28 02:13:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 190 transitions, 1625 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:13:02,471 INFO L231 Difference]: Finished difference. Result has 119 places, 138 transitions, 1170 flow [2024-06-28 02:13:02,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1170, PETRI_PLACES=119, PETRI_TRANSITIONS=138} [2024-06-28 02:13:02,471 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-28 02:13:02,472 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 138 transitions, 1170 flow [2024-06-28 02:13:02,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:02,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:02,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:02,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:13:02,472 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:02,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:02,472 INFO L85 PathProgramCache]: Analyzing trace with hash -540217842, now seen corresponding path program 1 times [2024-06-28 02:13:02,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:02,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259681943] [2024-06-28 02:13:02,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259681943] [2024-06-28 02:13:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259681943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496431978] [2024-06-28 02:13:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:03,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:03,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 138 transitions, 1170 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:03,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:03,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:03,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:04,294 INFO L124 PetriNetUnfolderBase]: 3402/5783 cut-off events. [2024-06-28 02:13:04,294 INFO L125 PetriNetUnfolderBase]: For 52689/52689 co-relation queries the response was YES. [2024-06-28 02:13:04,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25664 conditions, 5783 events. 3402/5783 cut-off events. For 52689/52689 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 38676 event pairs, 1132 based on Foata normal form. 4/5627 useless extension candidates. Maximal degree in co-relation 25614. Up to 4763 conditions per place. [2024-06-28 02:13:04,403 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 150 selfloop transitions, 32 changer transitions 0/194 dead transitions. [2024-06-28 02:13:04,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 194 transitions, 1765 flow [2024-06-28 02:13:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:04,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 02:13:04,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:13:04,405 INFO L175 Difference]: Start difference. First operand has 119 places, 138 transitions, 1170 flow. Second operand 8 states and 216 transitions. [2024-06-28 02:13:04,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 194 transitions, 1765 flow [2024-06-28 02:13:04,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 194 transitions, 1668 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:04,457 INFO L231 Difference]: Finished difference. Result has 122 places, 143 transitions, 1203 flow [2024-06-28 02:13:04,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1203, PETRI_PLACES=122, PETRI_TRANSITIONS=143} [2024-06-28 02:13:04,458 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-28 02:13:04,458 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 143 transitions, 1203 flow [2024-06-28 02:13:04,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:04,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:04,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:04,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:13:04,459 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 02:13:04,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash -678457156, now seen corresponding path program 4 times [2024-06-28 02:13:04,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:04,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099193578] [2024-06-28 02:13:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:04,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:05,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:05,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099193578] [2024-06-28 02:13:05,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099193578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:05,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:05,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:05,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569547213] [2024-06-28 02:13:05,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:05,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:05,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:05,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:05,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 143 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:05,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:05,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:05,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:06,140 INFO L124 PetriNetUnfolderBase]: 3479/5843 cut-off events. [2024-06-28 02:13:06,140 INFO L125 PetriNetUnfolderBase]: For 57574/57574 co-relation queries the response was YES. [2024-06-28 02:13:06,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26582 conditions, 5843 events. 3479/5843 cut-off events. For 57574/57574 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38644 event pairs, 1083 based on Foata normal form. 20/5711 useless extension candidates. Maximal degree in co-relation 26530. Up to 4530 conditions per place. [2024-06-28 02:13:06,187 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 137 selfloop transitions, 44 changer transitions 0/193 dead transitions. [2024-06-28 02:13:06,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 193 transitions, 1779 flow [2024-06-28 02:13:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 02:13:06,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-28 02:13:06,189 INFO L175 Difference]: Start difference. First operand has 122 places, 143 transitions, 1203 flow. Second operand 8 states and 219 transitions. [2024-06-28 02:13:06,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 193 transitions, 1779 flow [2024-06-28 02:13:06,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 193 transitions, 1696 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:06,260 INFO L231 Difference]: Finished difference. Result has 125 places, 144 transitions, 1241 flow [2024-06-28 02:13:06,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1241, PETRI_PLACES=125, PETRI_TRANSITIONS=144} [2024-06-28 02:13:06,261 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 02:13:06,261 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 144 transitions, 1241 flow [2024-06-28 02:13:06,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:06,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:06,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:06,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:13:06,261 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 02:13:06,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1701028006, now seen corresponding path program 2 times [2024-06-28 02:13:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:06,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165008402] [2024-06-28 02:13:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:06,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:07,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165008402] [2024-06-28 02:13:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165008402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:07,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:07,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087328405] [2024-06-28 02:13:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:07,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:07,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:07,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:07,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 144 transitions, 1241 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:07,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:07,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:07,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:08,153 INFO L124 PetriNetUnfolderBase]: 3539/6001 cut-off events. [2024-06-28 02:13:08,154 INFO L125 PetriNetUnfolderBase]: For 60257/60257 co-relation queries the response was YES. [2024-06-28 02:13:08,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27388 conditions, 6001 events. 3539/6001 cut-off events. For 60257/60257 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 40174 event pairs, 1170 based on Foata normal form. 4/5847 useless extension candidates. Maximal degree in co-relation 27335. Up to 4965 conditions per place. [2024-06-28 02:13:08,204 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 151 selfloop transitions, 34 changer transitions 0/197 dead transitions. [2024-06-28 02:13:08,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 197 transitions, 1840 flow [2024-06-28 02:13:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 02:13:08,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-28 02:13:08,206 INFO L175 Difference]: Start difference. First operand has 125 places, 144 transitions, 1241 flow. Second operand 8 states and 213 transitions. [2024-06-28 02:13:08,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 197 transitions, 1840 flow [2024-06-28 02:13:08,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 197 transitions, 1737 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:08,278 INFO L231 Difference]: Finished difference. Result has 128 places, 150 transitions, 1289 flow [2024-06-28 02:13:08,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1289, PETRI_PLACES=128, PETRI_TRANSITIONS=150} [2024-06-28 02:13:08,278 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-28 02:13:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 150 transitions, 1289 flow [2024-06-28 02:13:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:08,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:08,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:13:08,279 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 02:13:08,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -390376688, now seen corresponding path program 3 times [2024-06-28 02:13:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354426353] [2024-06-28 02:13:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:08,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:09,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354426353] [2024-06-28 02:13:09,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354426353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:09,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:09,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584300431] [2024-06-28 02:13:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:09,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:09,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:09,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 150 transitions, 1289 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:10,130 INFO L124 PetriNetUnfolderBase]: 3576/6076 cut-off events. [2024-06-28 02:13:10,131 INFO L125 PetriNetUnfolderBase]: For 62908/62908 co-relation queries the response was YES. [2024-06-28 02:13:10,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28038 conditions, 6076 events. 3576/6076 cut-off events. For 62908/62908 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 40788 event pairs, 1181 based on Foata normal form. 4/5921 useless extension candidates. Maximal degree in co-relation 27983. Up to 5020 conditions per place. [2024-06-28 02:13:10,182 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 152 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2024-06-28 02:13:10,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 201 transitions, 1888 flow [2024-06-28 02:13:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 02:13:10,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-28 02:13:10,183 INFO L175 Difference]: Start difference. First operand has 128 places, 150 transitions, 1289 flow. Second operand 8 states and 212 transitions. [2024-06-28 02:13:10,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 201 transitions, 1888 flow [2024-06-28 02:13:10,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 201 transitions, 1789 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:10,264 INFO L231 Difference]: Finished difference. Result has 131 places, 154 transitions, 1330 flow [2024-06-28 02:13:10,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1330, PETRI_PLACES=131, PETRI_TRANSITIONS=154} [2024-06-28 02:13:10,265 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-28 02:13:10,265 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 154 transitions, 1330 flow [2024-06-28 02:13:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:10,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:10,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:13:10,265 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 02:13:10,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash -962908690, now seen corresponding path program 4 times [2024-06-28 02:13:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:10,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757739706] [2024-06-28 02:13:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:11,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:11,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757739706] [2024-06-28 02:13:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757739706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404353127] [2024-06-28 02:13:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:11,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:11,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:11,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:11,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 154 transitions, 1330 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:11,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:11,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:12,081 INFO L124 PetriNetUnfolderBase]: 3568/6014 cut-off events. [2024-06-28 02:13:12,081 INFO L125 PetriNetUnfolderBase]: For 65580/65580 co-relation queries the response was YES. [2024-06-28 02:13:12,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28112 conditions, 6014 events. 3568/6014 cut-off events. For 65580/65580 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 40164 event pairs, 1047 based on Foata normal form. 4/5872 useless extension candidates. Maximal degree in co-relation 28056. Up to 4863 conditions per place. [2024-06-28 02:13:12,122 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 148 selfloop transitions, 44 changer transitions 0/204 dead transitions. [2024-06-28 02:13:12,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 204 transitions, 1922 flow [2024-06-28 02:13:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 02:13:12,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-28 02:13:12,124 INFO L175 Difference]: Start difference. First operand has 131 places, 154 transitions, 1330 flow. Second operand 8 states and 213 transitions. [2024-06-28 02:13:12,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 204 transitions, 1922 flow [2024-06-28 02:13:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 204 transitions, 1838 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:12,195 INFO L231 Difference]: Finished difference. Result has 135 places, 156 transitions, 1385 flow [2024-06-28 02:13:12,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1385, PETRI_PLACES=135, PETRI_TRANSITIONS=156} [2024-06-28 02:13:12,195 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 02:13:12,195 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 156 transitions, 1385 flow [2024-06-28 02:13:12,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:12,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:12,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:13:12,196 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:12,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1365420353, now seen corresponding path program 1 times [2024-06-28 02:13:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:12,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249547620] [2024-06-28 02:13:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:12,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:12,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249547620] [2024-06-28 02:13:12,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249547620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:12,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:12,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:12,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106166833] [2024-06-28 02:13:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:12,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:12,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:12,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 156 transitions, 1385 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:12,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:12,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:12,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:13,706 INFO L124 PetriNetUnfolderBase]: 3720/6315 cut-off events. [2024-06-28 02:13:13,707 INFO L125 PetriNetUnfolderBase]: For 72310/72310 co-relation queries the response was YES. [2024-06-28 02:13:13,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29757 conditions, 6315 events. 3720/6315 cut-off events. For 72310/72310 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 42721 event pairs, 1210 based on Foata normal form. 4/6152 useless extension candidates. Maximal degree in co-relation 29700. Up to 5186 conditions per place. [2024-06-28 02:13:13,754 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 160 selfloop transitions, 32 changer transitions 0/204 dead transitions. [2024-06-28 02:13:13,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 204 transitions, 2104 flow [2024-06-28 02:13:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:13:13,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:13:13,756 INFO L175 Difference]: Start difference. First operand has 135 places, 156 transitions, 1385 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:13:13,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 204 transitions, 2104 flow [2024-06-28 02:13:13,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 204 transitions, 1969 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:13,825 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 1560 flow [2024-06-28 02:13:13,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1560, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2024-06-28 02:13:13,825 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-28 02:13:13,825 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 1560 flow [2024-06-28 02:13:13,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:13,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:13,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:13:13,826 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:13,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1572996353, now seen corresponding path program 2 times [2024-06-28 02:13:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476580462] [2024-06-28 02:13:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476580462] [2024-06-28 02:13:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476580462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:14,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:14,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106031805] [2024-06-28 02:13:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:14,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:14,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:14,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:14,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 1560 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:14,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:14,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:14,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:15,402 INFO L124 PetriNetUnfolderBase]: 3867/6729 cut-off events. [2024-06-28 02:13:15,403 INFO L125 PetriNetUnfolderBase]: For 85101/85101 co-relation queries the response was YES. [2024-06-28 02:13:15,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32506 conditions, 6729 events. 3867/6729 cut-off events. For 85101/85101 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 46857 event pairs, 1232 based on Foata normal form. 4/6514 useless extension candidates. Maximal degree in co-relation 32445. Up to 5091 conditions per place. [2024-06-28 02:13:15,459 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 166 selfloop transitions, 47 changer transitions 0/225 dead transitions. [2024-06-28 02:13:15,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 225 transitions, 2461 flow [2024-06-28 02:13:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:13:15,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-28 02:13:15,461 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 1560 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:13:15,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 225 transitions, 2461 flow [2024-06-28 02:13:15,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 225 transitions, 2403 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-28 02:13:15,551 INFO L231 Difference]: Finished difference. Result has 149 places, 191 transitions, 1855 flow [2024-06-28 02:13:15,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1855, PETRI_PLACES=149, PETRI_TRANSITIONS=191} [2024-06-28 02:13:15,552 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 02:13:15,552 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 191 transitions, 1855 flow [2024-06-28 02:13:15,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:15,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:15,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:15,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:13:15,553 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:15,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:15,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1571509085, now seen corresponding path program 3 times [2024-06-28 02:13:15,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:15,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126214961] [2024-06-28 02:13:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:15,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:16,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:16,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126214961] [2024-06-28 02:13:16,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126214961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:16,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:16,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:16,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086415382] [2024-06-28 02:13:16,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:16,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:16,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:16,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:16,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 191 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:16,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:16,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:16,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:17,083 INFO L124 PetriNetUnfolderBase]: 3895/6763 cut-off events. [2024-06-28 02:13:17,083 INFO L125 PetriNetUnfolderBase]: For 93727/93727 co-relation queries the response was YES. [2024-06-28 02:13:17,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34222 conditions, 6763 events. 3895/6763 cut-off events. For 93727/93727 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 47108 event pairs, 1224 based on Foata normal form. 4/6548 useless extension candidates. Maximal degree in co-relation 34155. Up to 5118 conditions per place. [2024-06-28 02:13:17,147 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 162 selfloop transitions, 54 changer transitions 0/228 dead transitions. [2024-06-28 02:13:17,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 228 transitions, 2584 flow [2024-06-28 02:13:17,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 02:13:17,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 02:13:17,149 INFO L175 Difference]: Start difference. First operand has 149 places, 191 transitions, 1855 flow. Second operand 7 states and 184 transitions. [2024-06-28 02:13:17,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 228 transitions, 2584 flow [2024-06-28 02:13:17,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 228 transitions, 2490 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-06-28 02:13:17,293 INFO L231 Difference]: Finished difference. Result has 156 places, 199 transitions, 2035 flow [2024-06-28 02:13:17,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2035, PETRI_PLACES=156, PETRI_TRANSITIONS=199} [2024-06-28 02:13:17,294 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-28 02:13:17,294 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 199 transitions, 2035 flow [2024-06-28 02:13:17,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:17,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:17,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:17,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:13:17,294 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:17,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1571519997, now seen corresponding path program 1 times [2024-06-28 02:13:17,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:17,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427871861] [2024-06-28 02:13:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:18,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:18,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427871861] [2024-06-28 02:13:18,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427871861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:18,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:18,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370407621] [2024-06-28 02:13:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:18,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:18,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:18,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:13:18,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 199 transitions, 2035 flow. Second operand has 10 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:18,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:18,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:13:18,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:19,359 INFO L124 PetriNetUnfolderBase]: 3738/6584 cut-off events. [2024-06-28 02:13:19,359 INFO L125 PetriNetUnfolderBase]: For 96973/96988 co-relation queries the response was YES. [2024-06-28 02:13:19,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32824 conditions, 6584 events. 3738/6584 cut-off events. For 96973/96988 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 46461 event pairs, 1209 based on Foata normal form. 12/6349 useless extension candidates. Maximal degree in co-relation 32753. Up to 4913 conditions per place. [2024-06-28 02:13:19,428 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 138 selfloop transitions, 64 changer transitions 0/236 dead transitions. [2024-06-28 02:13:19,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 236 transitions, 2639 flow [2024-06-28 02:13:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:13:19,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 02:13:19,429 INFO L175 Difference]: Start difference. First operand has 156 places, 199 transitions, 2035 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:13:19,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 236 transitions, 2639 flow [2024-06-28 02:13:19,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 236 transitions, 2538 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 02:13:19,597 INFO L231 Difference]: Finished difference. Result has 162 places, 202 transitions, 2122 flow [2024-06-28 02:13:19,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2122, PETRI_PLACES=162, PETRI_TRANSITIONS=202} [2024-06-28 02:13:19,597 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-06-28 02:13:19,598 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 202 transitions, 2122 flow [2024-06-28 02:13:19,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:19,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:19,598 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 02:13:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:13:19,598 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:19,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash 985702599, now seen corresponding path program 1 times [2024-06-28 02:13:19,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:19,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175397717] [2024-06-28 02:13:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:19,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:20,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:20,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175397717] [2024-06-28 02:13:20,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175397717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:20,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:20,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557512289] [2024-06-28 02:13:20,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:20,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:20,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:20,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 202 transitions, 2122 flow. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:20,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:20,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:20,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:21,300 INFO L124 PetriNetUnfolderBase]: 4084/6823 cut-off events. [2024-06-28 02:13:21,300 INFO L125 PetriNetUnfolderBase]: For 100757/100757 co-relation queries the response was YES. [2024-06-28 02:13:21,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35670 conditions, 6823 events. 4084/6823 cut-off events. For 100757/100757 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 46355 event pairs, 1328 based on Foata normal form. 2/6671 useless extension candidates. Maximal degree in co-relation 35598. Up to 5809 conditions per place. [2024-06-28 02:13:21,391 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 194 selfloop transitions, 37 changer transitions 0/243 dead transitions. [2024-06-28 02:13:21,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 243 transitions, 2862 flow [2024-06-28 02:13:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:13:21,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 02:13:21,393 INFO L175 Difference]: Start difference. First operand has 162 places, 202 transitions, 2122 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:13:21,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 243 transitions, 2862 flow [2024-06-28 02:13:21,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 243 transitions, 2735 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:21,549 INFO L231 Difference]: Finished difference. Result has 166 places, 214 transitions, 2272 flow [2024-06-28 02:13:21,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2272, PETRI_PLACES=166, PETRI_TRANSITIONS=214} [2024-06-28 02:13:21,549 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-28 02:13:21,550 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 214 transitions, 2272 flow [2024-06-28 02:13:21,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:21,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:21,550 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 02:13:21,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:13:21,550 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:21,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1555354471, now seen corresponding path program 2 times [2024-06-28 02:13:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:21,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146683787] [2024-06-28 02:13:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:21,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:22,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:22,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146683787] [2024-06-28 02:13:22,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146683787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:22,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:22,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260750052] [2024-06-28 02:13:22,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:22,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:22,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:22,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:22,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:22,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 214 transitions, 2272 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:22,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:22,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:22,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:23,279 INFO L124 PetriNetUnfolderBase]: 4158/6957 cut-off events. [2024-06-28 02:13:23,279 INFO L125 PetriNetUnfolderBase]: For 106494/106494 co-relation queries the response was YES. [2024-06-28 02:13:23,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36230 conditions, 6957 events. 4158/6957 cut-off events. For 106494/106494 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 47494 event pairs, 1321 based on Foata normal form. 2/6805 useless extension candidates. Maximal degree in co-relation 36155. Up to 5832 conditions per place. [2024-06-28 02:13:23,349 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 195 selfloop transitions, 45 changer transitions 0/252 dead transitions. [2024-06-28 02:13:23,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 252 transitions, 3047 flow [2024-06-28 02:13:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:13:23,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 02:13:23,350 INFO L175 Difference]: Start difference. First operand has 166 places, 214 transitions, 2272 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:13:23,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 252 transitions, 3047 flow [2024-06-28 02:13:23,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 252 transitions, 2959 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:23,496 INFO L231 Difference]: Finished difference. Result has 170 places, 221 transitions, 2431 flow [2024-06-28 02:13:23,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2431, PETRI_PLACES=170, PETRI_TRANSITIONS=221} [2024-06-28 02:13:23,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-28 02:13:23,497 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 221 transitions, 2431 flow [2024-06-28 02:13:23,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:23,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:23,498 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 02:13:23,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:13:23,498 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:23,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -924110873, now seen corresponding path program 3 times [2024-06-28 02:13:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449448736] [2024-06-28 02:13:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:23,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449448736] [2024-06-28 02:13:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449448736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:24,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193805781] [2024-06-28 02:13:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:24,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:24,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:24,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:24,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 221 transitions, 2431 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:24,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:24,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:24,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:25,164 INFO L124 PetriNetUnfolderBase]: 4192/7015 cut-off events. [2024-06-28 02:13:25,164 INFO L125 PetriNetUnfolderBase]: For 112178/112178 co-relation queries the response was YES. [2024-06-28 02:13:25,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37093 conditions, 7015 events. 4192/7015 cut-off events. For 112178/112178 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 47927 event pairs, 1340 based on Foata normal form. 2/6857 useless extension candidates. Maximal degree in co-relation 37016. Up to 5955 conditions per place. [2024-06-28 02:13:25,235 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 204 selfloop transitions, 36 changer transitions 0/252 dead transitions. [2024-06-28 02:13:25,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 252 transitions, 3075 flow [2024-06-28 02:13:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 02:13:25,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-28 02:13:25,236 INFO L175 Difference]: Start difference. First operand has 170 places, 221 transitions, 2431 flow. Second operand 7 states and 179 transitions. [2024-06-28 02:13:25,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 252 transitions, 3075 flow [2024-06-28 02:13:25,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 252 transitions, 3004 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 02:13:25,408 INFO L231 Difference]: Finished difference. Result has 174 places, 224 transitions, 2510 flow [2024-06-28 02:13:25,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2510, PETRI_PLACES=174, PETRI_TRANSITIONS=224} [2024-06-28 02:13:25,408 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-28 02:13:25,408 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 224 transitions, 2510 flow [2024-06-28 02:13:25,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:25,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:25,409 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 02:13:25,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:13:25,409 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:25,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1488913947, now seen corresponding path program 4 times [2024-06-28 02:13:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865942581] [2024-06-28 02:13:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:25,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:25,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865942581] [2024-06-28 02:13:25,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865942581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:25,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:25,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860288233] [2024-06-28 02:13:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:25,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:26,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:26,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 224 transitions, 2510 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:26,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:26,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:26,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:27,102 INFO L124 PetriNetUnfolderBase]: 4180/6995 cut-off events. [2024-06-28 02:13:27,102 INFO L125 PetriNetUnfolderBase]: For 115488/115488 co-relation queries the response was YES. [2024-06-28 02:13:27,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36852 conditions, 6995 events. 4180/6995 cut-off events. For 115488/115488 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 47736 event pairs, 1314 based on Foata normal form. 4/6843 useless extension candidates. Maximal degree in co-relation 36774. Up to 5725 conditions per place. [2024-06-28 02:13:27,169 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 193 selfloop transitions, 48 changer transitions 0/253 dead transitions. [2024-06-28 02:13:27,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 253 transitions, 3166 flow [2024-06-28 02:13:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:13:27,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:13:27,170 INFO L175 Difference]: Start difference. First operand has 174 places, 224 transitions, 2510 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:13:27,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 253 transitions, 3166 flow [2024-06-28 02:13:27,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 253 transitions, 3072 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:27,347 INFO L231 Difference]: Finished difference. Result has 177 places, 224 transitions, 2520 flow [2024-06-28 02:13:27,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2520, PETRI_PLACES=177, PETRI_TRANSITIONS=224} [2024-06-28 02:13:27,348 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-28 02:13:27,348 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 224 transitions, 2520 flow [2024-06-28 02:13:27,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:27,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:27,348 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 02:13:27,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:13:27,349 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:27,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash 158146997, now seen corresponding path program 5 times [2024-06-28 02:13:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:27,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213630623] [2024-06-28 02:13:27,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:27,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213630623] [2024-06-28 02:13:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213630623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113447151] [2024-06-28 02:13:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:27,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:28,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:28,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 224 transitions, 2520 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:28,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:28,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:28,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:29,013 INFO L124 PetriNetUnfolderBase]: 4248/7429 cut-off events. [2024-06-28 02:13:29,014 INFO L125 PetriNetUnfolderBase]: For 122371/122371 co-relation queries the response was YES. [2024-06-28 02:13:29,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38075 conditions, 7429 events. 4248/7429 cut-off events. For 122371/122371 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 52820 event pairs, 1302 based on Foata normal form. 4/7191 useless extension candidates. Maximal degree in co-relation 37996. Up to 5435 conditions per place. [2024-06-28 02:13:29,085 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 173 selfloop transitions, 73 changer transitions 0/258 dead transitions. [2024-06-28 02:13:29,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 258 transitions, 3324 flow [2024-06-28 02:13:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 02:13:29,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2024-06-28 02:13:29,087 INFO L175 Difference]: Start difference. First operand has 177 places, 224 transitions, 2520 flow. Second operand 7 states and 185 transitions. [2024-06-28 02:13:29,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 258 transitions, 3324 flow [2024-06-28 02:13:29,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 258 transitions, 3217 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:29,283 INFO L231 Difference]: Finished difference. Result has 180 places, 228 transitions, 2624 flow [2024-06-28 02:13:29,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2624, PETRI_PLACES=180, PETRI_TRANSITIONS=228} [2024-06-28 02:13:29,284 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-28 02:13:29,284 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 228 transitions, 2624 flow [2024-06-28 02:13:29,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:29,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:29,284 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 02:13:29,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:13:29,284 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:29,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1462929385, now seen corresponding path program 6 times [2024-06-28 02:13:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:29,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413008824] [2024-06-28 02:13:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:29,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:29,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413008824] [2024-06-28 02:13:29,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413008824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:29,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786353290] [2024-06-28 02:13:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:29,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:29,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:29,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:29,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 228 transitions, 2624 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:29,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:29,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:29,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:31,006 INFO L124 PetriNetUnfolderBase]: 4232/7387 cut-off events. [2024-06-28 02:13:31,006 INFO L125 PetriNetUnfolderBase]: For 124226/124226 co-relation queries the response was YES. [2024-06-28 02:13:31,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38075 conditions, 7387 events. 4232/7387 cut-off events. For 124226/124226 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 52373 event pairs, 1301 based on Foata normal form. 4/7155 useless extension candidates. Maximal degree in co-relation 37995. Up to 5422 conditions per place. [2024-06-28 02:13:31,085 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 175 selfloop transitions, 70 changer transitions 0/257 dead transitions. [2024-06-28 02:13:31,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 257 transitions, 3302 flow [2024-06-28 02:13:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 02:13:31,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 02:13:31,086 INFO L175 Difference]: Start difference. First operand has 180 places, 228 transitions, 2624 flow. Second operand 7 states and 184 transitions. [2024-06-28 02:13:31,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 257 transitions, 3302 flow [2024-06-28 02:13:31,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 257 transitions, 3047 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:31,337 INFO L231 Difference]: Finished difference. Result has 181 places, 228 transitions, 2518 flow [2024-06-28 02:13:31,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2518, PETRI_PLACES=181, PETRI_TRANSITIONS=228} [2024-06-28 02:13:31,338 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-28 02:13:31,338 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 228 transitions, 2518 flow [2024-06-28 02:13:31,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:31,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:31,338 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 02:13:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:13:31,339 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:31,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash 160417945, now seen corresponding path program 1 times [2024-06-28 02:13:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:31,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594549540] [2024-06-28 02:13:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:31,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:32,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594549540] [2024-06-28 02:13:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594549540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:32,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:32,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:32,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491386971] [2024-06-28 02:13:32,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:32,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:32,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:32,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:13:32,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 228 transitions, 2518 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:32,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:32,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:13:32,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:33,115 INFO L124 PetriNetUnfolderBase]: 3984/7027 cut-off events. [2024-06-28 02:13:33,115 INFO L125 PetriNetUnfolderBase]: For 121074/121086 co-relation queries the response was YES. [2024-06-28 02:13:33,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35671 conditions, 7027 events. 3984/7027 cut-off events. For 121074/121086 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 50348 event pairs, 1230 based on Foata normal form. 7/6791 useless extension candidates. Maximal degree in co-relation 35591. Up to 5315 conditions per place. [2024-06-28 02:13:33,179 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 161 selfloop transitions, 57 changer transitions 0/260 dead transitions. [2024-06-28 02:13:33,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 260 transitions, 3196 flow [2024-06-28 02:13:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 02:13:33,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 02:13:33,181 INFO L175 Difference]: Start difference. First operand has 181 places, 228 transitions, 2518 flow. Second operand 7 states and 184 transitions. [2024-06-28 02:13:33,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 260 transitions, 3196 flow [2024-06-28 02:13:33,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 260 transitions, 3041 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:33,380 INFO L231 Difference]: Finished difference. Result has 182 places, 234 transitions, 2545 flow [2024-06-28 02:13:33,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2545, PETRI_PLACES=182, PETRI_TRANSITIONS=234} [2024-06-28 02:13:33,381 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-28 02:13:33,381 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 234 transitions, 2545 flow [2024-06-28 02:13:33,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:33,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:33,381 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 02:13:33,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:13:33,381 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:33,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:33,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1471927755, now seen corresponding path program 2 times [2024-06-28 02:13:33,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:33,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393603926] [2024-06-28 02:13:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:33,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393603926] [2024-06-28 02:13:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393603926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:34,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:34,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:34,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179960347] [2024-06-28 02:13:34,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:34,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:13:34,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 234 transitions, 2545 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:34,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:34,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:13:34,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:35,116 INFO L124 PetriNetUnfolderBase]: 3985/7038 cut-off events. [2024-06-28 02:13:35,116 INFO L125 PetriNetUnfolderBase]: For 125187/125199 co-relation queries the response was YES. [2024-06-28 02:13:35,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36118 conditions, 7038 events. 3985/7038 cut-off events. For 125187/125199 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50440 event pairs, 1228 based on Foata normal form. 7/6810 useless extension candidates. Maximal degree in co-relation 36037. Up to 5364 conditions per place. [2024-06-28 02:13:35,292 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 161 selfloop transitions, 59 changer transitions 0/262 dead transitions. [2024-06-28 02:13:35,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 262 transitions, 3135 flow [2024-06-28 02:13:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:13:35,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 02:13:35,293 INFO L175 Difference]: Start difference. First operand has 182 places, 234 transitions, 2545 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:13:35,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 262 transitions, 3135 flow [2024-06-28 02:13:35,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 262 transitions, 3038 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 02:13:35,517 INFO L231 Difference]: Finished difference. Result has 188 places, 238 transitions, 2690 flow [2024-06-28 02:13:35,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2690, PETRI_PLACES=188, PETRI_TRANSITIONS=238} [2024-06-28 02:13:35,517 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-28 02:13:35,517 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 238 transitions, 2690 flow [2024-06-28 02:13:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:35,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:35,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:35,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:13:35,518 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 02:13:35,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2032958345, now seen corresponding path program 7 times [2024-06-28 02:13:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:35,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633854503] [2024-06-28 02:13:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:35,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:36,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:36,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633854503] [2024-06-28 02:13:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633854503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:36,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:36,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:36,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257900322] [2024-06-28 02:13:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:36,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:36,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:36,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:36,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:36,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 238 transitions, 2690 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:36,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:36,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:36,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:37,200 INFO L124 PetriNetUnfolderBase]: 4336/7243 cut-off events. [2024-06-28 02:13:37,201 INFO L125 PetriNetUnfolderBase]: For 132113/132113 co-relation queries the response was YES. [2024-06-28 02:13:37,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39062 conditions, 7243 events. 4336/7243 cut-off events. For 132113/132113 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 49741 event pairs, 1348 based on Foata normal form. 2/7083 useless extension candidates. Maximal degree in co-relation 38977. Up to 6118 conditions per place. [2024-06-28 02:13:37,283 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 222 selfloop transitions, 57 changer transitions 0/291 dead transitions. [2024-06-28 02:13:37,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 291 transitions, 3595 flow [2024-06-28 02:13:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 02:13:37,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 02:13:37,285 INFO L175 Difference]: Start difference. First operand has 188 places, 238 transitions, 2690 flow. Second operand 8 states and 209 transitions. [2024-06-28 02:13:37,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 291 transitions, 3595 flow [2024-06-28 02:13:37,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 291 transitions, 3452 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:37,580 INFO L231 Difference]: Finished difference. Result has 193 places, 258 transitions, 2944 flow [2024-06-28 02:13:37,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2944, PETRI_PLACES=193, PETRI_TRANSITIONS=258} [2024-06-28 02:13:37,581 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-28 02:13:37,581 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 258 transitions, 2944 flow [2024-06-28 02:13:37,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:37,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:37,581 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 02:13:37,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:13:37,581 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 02:13:37,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash -910947095, now seen corresponding path program 1 times [2024-06-28 02:13:37,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:37,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769185878] [2024-06-28 02:13:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:37,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:38,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:38,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769185878] [2024-06-28 02:13:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769185878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:38,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:38,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686179449] [2024-06-28 02:13:38,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:38,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:38,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:38,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:38,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 258 transitions, 2944 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:38,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:38,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:38,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:39,388 INFO L124 PetriNetUnfolderBase]: 4338/7168 cut-off events. [2024-06-28 02:13:39,388 INFO L125 PetriNetUnfolderBase]: For 133430/133430 co-relation queries the response was YES. [2024-06-28 02:13:39,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39170 conditions, 7168 events. 4338/7168 cut-off events. For 133430/133430 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 48708 event pairs, 1357 based on Foata normal form. 1/7026 useless extension candidates. Maximal degree in co-relation 39083. Up to 6225 conditions per place. [2024-06-28 02:13:39,469 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 260 selfloop transitions, 18 changer transitions 0/290 dead transitions. [2024-06-28 02:13:39,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 290 transitions, 3684 flow [2024-06-28 02:13:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:13:39,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 02:13:39,470 INFO L175 Difference]: Start difference. First operand has 193 places, 258 transitions, 2944 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:13:39,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 290 transitions, 3684 flow [2024-06-28 02:13:39,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 290 transitions, 3514 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:13:39,691 INFO L231 Difference]: Finished difference. Result has 194 places, 265 transitions, 2925 flow [2024-06-28 02:13:39,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2925, PETRI_PLACES=194, PETRI_TRANSITIONS=265} [2024-06-28 02:13:39,691 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-28 02:13:39,691 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 265 transitions, 2925 flow [2024-06-28 02:13:39,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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 02:13:39,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:39,692 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 02:13:39,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:13:39,692 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 02:13:39,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash -621640377, now seen corresponding path program 1 times [2024-06-28 02:13:39,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:39,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388758332] [2024-06-28 02:13:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:39,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:40,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:40,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388758332] [2024-06-28 02:13:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388758332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:40,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635734714] [2024-06-28 02:13:40,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:40,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:40,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:40,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 265 transitions, 2925 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:40,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:40,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:40,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:41,644 INFO L124 PetriNetUnfolderBase]: 4397/7246 cut-off events. [2024-06-28 02:13:41,644 INFO L125 PetriNetUnfolderBase]: For 141208/141208 co-relation queries the response was YES. [2024-06-28 02:13:41,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40311 conditions, 7246 events. 4397/7246 cut-off events. For 141208/141208 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 49146 event pairs, 1282 based on Foata normal form. 2/7105 useless extension candidates. Maximal degree in co-relation 40222. Up to 6052 conditions per place. [2024-06-28 02:13:41,726 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 239 selfloop transitions, 74 changer transitions 0/325 dead transitions. [2024-06-28 02:13:41,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 325 transitions, 4039 flow [2024-06-28 02:13:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:13:41,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 02:13:41,727 INFO L175 Difference]: Start difference. First operand has 194 places, 265 transitions, 2925 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:13:41,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 325 transitions, 4039 flow [2024-06-28 02:13:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 325 transitions, 3952 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:42,055 INFO L231 Difference]: Finished difference. Result has 200 places, 292 transitions, 3405 flow [2024-06-28 02:13:42,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3405, PETRI_PLACES=200, PETRI_TRANSITIONS=292} [2024-06-28 02:13:42,055 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 02:13:42,058 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 292 transitions, 3405 flow [2024-06-28 02:13:42,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:42,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:42,059 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 02:13:42,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:13:42,059 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 02:13:42,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash -448256757, now seen corresponding path program 2 times [2024-06-28 02:13:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:42,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357912797] [2024-06-28 02:13:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357912797] [2024-06-28 02:13:42,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357912797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:42,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:42,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993427643] [2024-06-28 02:13:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:42,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:42,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:42,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:42,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 292 transitions, 3405 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:42,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:42,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:42,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:44,082 INFO L124 PetriNetUnfolderBase]: 4441/7617 cut-off events. [2024-06-28 02:13:44,082 INFO L125 PetriNetUnfolderBase]: For 156325/156325 co-relation queries the response was YES. [2024-06-28 02:13:44,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42882 conditions, 7617 events. 4441/7617 cut-off events. For 156325/156325 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 53132 event pairs, 1201 based on Foata normal form. 2/7410 useless extension candidates. Maximal degree in co-relation 42790. Up to 5843 conditions per place. [2024-06-28 02:13:44,164 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 251 selfloop transitions, 97 changer transitions 0/360 dead transitions. [2024-06-28 02:13:44,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 360 transitions, 4710 flow [2024-06-28 02:13:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:13:44,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 02:13:44,165 INFO L175 Difference]: Start difference. First operand has 200 places, 292 transitions, 3405 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:13:44,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 360 transitions, 4710 flow [2024-06-28 02:13:44,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 360 transitions, 4497 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:44,511 INFO L231 Difference]: Finished difference. Result has 206 places, 324 transitions, 3894 flow [2024-06-28 02:13:44,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3894, PETRI_PLACES=206, PETRI_TRANSITIONS=324} [2024-06-28 02:13:44,512 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-28 02:13:44,512 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 324 transitions, 3894 flow [2024-06-28 02:13:44,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:44,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:44,512 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 02:13:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:13:44,512 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 02:13:44,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1527445097, now seen corresponding path program 3 times [2024-06-28 02:13:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:44,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503604145] [2024-06-28 02:13:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:44,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:45,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503604145] [2024-06-28 02:13:45,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503604145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:45,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:45,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:45,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632057682] [2024-06-28 02:13:45,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:45,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:45,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:45,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:45,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 324 transitions, 3894 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:45,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:45,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:45,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:46,563 INFO L124 PetriNetUnfolderBase]: 4480/7680 cut-off events. [2024-06-28 02:13:46,563 INFO L125 PetriNetUnfolderBase]: For 166706/166706 co-relation queries the response was YES. [2024-06-28 02:13:46,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44555 conditions, 7680 events. 4480/7680 cut-off events. For 166706/166706 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53707 event pairs, 1205 based on Foata normal form. 2/7471 useless extension candidates. Maximal degree in co-relation 44460. Up to 5895 conditions per place. [2024-06-28 02:13:46,650 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 242 selfloop transitions, 114 changer transitions 0/368 dead transitions. [2024-06-28 02:13:46,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 368 transitions, 4990 flow [2024-06-28 02:13:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:13:46,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 02:13:46,651 INFO L175 Difference]: Start difference. First operand has 206 places, 324 transitions, 3894 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:13:46,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 368 transitions, 4990 flow [2024-06-28 02:13:47,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 368 transitions, 4776 flow, removed 86 selfloop flow, removed 2 redundant places. [2024-06-28 02:13:47,094 INFO L231 Difference]: Finished difference. Result has 214 places, 336 transitions, 4211 flow [2024-06-28 02:13:47,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4211, PETRI_PLACES=214, PETRI_TRANSITIONS=336} [2024-06-28 02:13:47,095 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-28 02:13:47,095 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 336 transitions, 4211 flow [2024-06-28 02:13:47,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:47,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:47,095 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 02:13:47,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:13:47,095 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 02:13:47,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1527771527, now seen corresponding path program 4 times [2024-06-28 02:13:47,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:47,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368316976] [2024-06-28 02:13:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:47,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:47,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:47,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368316976] [2024-06-28 02:13:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368316976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:47,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:47,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705043560] [2024-06-28 02:13:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:47,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:47,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:47,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:47,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 336 transitions, 4211 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:47,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:47,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:47,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:49,172 INFO L124 PetriNetUnfolderBase]: 4494/7699 cut-off events. [2024-06-28 02:13:49,172 INFO L125 PetriNetUnfolderBase]: For 174167/174167 co-relation queries the response was YES. [2024-06-28 02:13:49,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46226 conditions, 7699 events. 4494/7699 cut-off events. For 174167/174167 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53649 event pairs, 1205 based on Foata normal form. 2/7490 useless extension candidates. Maximal degree in co-relation 46127. Up to 5814 conditions per place. [2024-06-28 02:13:49,261 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 235 selfloop transitions, 128 changer transitions 0/375 dead transitions. [2024-06-28 02:13:49,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 375 transitions, 5237 flow [2024-06-28 02:13:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 02:13:49,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-28 02:13:49,265 INFO L175 Difference]: Start difference. First operand has 214 places, 336 transitions, 4211 flow. Second operand 8 states and 206 transitions. [2024-06-28 02:13:49,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 375 transitions, 5237 flow [2024-06-28 02:13:49,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 375 transitions, 5028 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-28 02:13:49,633 INFO L231 Difference]: Finished difference. Result has 220 places, 343 transitions, 4419 flow [2024-06-28 02:13:49,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4419, PETRI_PLACES=220, PETRI_TRANSITIONS=343} [2024-06-28 02:13:49,634 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-28 02:13:49,634 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 343 transitions, 4419 flow [2024-06-28 02:13:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:49,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:49,634 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 02:13:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:13:49,635 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:49,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash 384687869, now seen corresponding path program 1 times [2024-06-28 02:13:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:49,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536921469] [2024-06-28 02:13:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:50,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:50,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536921469] [2024-06-28 02:13:50,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536921469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:50,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:50,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:50,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11999745] [2024-06-28 02:13:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:50,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:50,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:50,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:50,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 343 transitions, 4419 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:50,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:50,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:50,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:52,103 INFO L124 PetriNetUnfolderBase]: 4773/7933 cut-off events. [2024-06-28 02:13:52,104 INFO L125 PetriNetUnfolderBase]: For 194548/194548 co-relation queries the response was YES. [2024-06-28 02:13:52,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49543 conditions, 7933 events. 4773/7933 cut-off events. For 194548/194548 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 54892 event pairs, 1060 based on Foata normal form. 12/7786 useless extension candidates. Maximal degree in co-relation 49442. Up to 5992 conditions per place. [2024-06-28 02:13:52,227 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 327 selfloop transitions, 73 changer transitions 0/412 dead transitions. [2024-06-28 02:13:52,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 412 transitions, 5609 flow [2024-06-28 02:13:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-28 02:13:52,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-28 02:13:52,229 INFO L175 Difference]: Start difference. First operand has 220 places, 343 transitions, 4419 flow. Second operand 9 states and 249 transitions. [2024-06-28 02:13:52,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 412 transitions, 5609 flow [2024-06-28 02:13:52,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 412 transitions, 5370 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:52,710 INFO L231 Difference]: Finished difference. Result has 227 places, 351 transitions, 4469 flow [2024-06-28 02:13:52,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4180, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4469, PETRI_PLACES=227, PETRI_TRANSITIONS=351} [2024-06-28 02:13:52,710 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-28 02:13:52,711 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 351 transitions, 4469 flow [2024-06-28 02:13:52,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:52,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:52,711 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 02:13:52,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:13:52,711 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:52,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -672702723, now seen corresponding path program 2 times [2024-06-28 02:13:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:52,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623267079] [2024-06-28 02:13:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:52,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:53,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623267079] [2024-06-28 02:13:53,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623267079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:53,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:53,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:53,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271635903] [2024-06-28 02:13:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:53,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:53,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:53,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:53,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 351 transitions, 4469 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:53,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:53,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:53,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:55,391 INFO L124 PetriNetUnfolderBase]: 5019/8395 cut-off events. [2024-06-28 02:13:55,392 INFO L125 PetriNetUnfolderBase]: For 205908/205908 co-relation queries the response was YES. [2024-06-28 02:13:55,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52598 conditions, 8395 events. 5019/8395 cut-off events. For 205908/205908 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 58972 event pairs, 1334 based on Foata normal form. 12/8233 useless extension candidates. Maximal degree in co-relation 52493. Up to 6537 conditions per place. [2024-06-28 02:13:55,510 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 331 selfloop transitions, 72 changer transitions 0/415 dead transitions. [2024-06-28 02:13:55,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 415 transitions, 5636 flow [2024-06-28 02:13:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 02:13:55,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-06-28 02:13:55,511 INFO L175 Difference]: Start difference. First operand has 227 places, 351 transitions, 4469 flow. Second operand 9 states and 247 transitions. [2024-06-28 02:13:55,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 415 transitions, 5636 flow [2024-06-28 02:13:56,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 415 transitions, 5501 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:56,081 INFO L231 Difference]: Finished difference. Result has 234 places, 357 transitions, 4599 flow [2024-06-28 02:13:56,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4599, PETRI_PLACES=234, PETRI_TRANSITIONS=357} [2024-06-28 02:13:56,082 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-28 02:13:56,082 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 357 transitions, 4599 flow [2024-06-28 02:13:56,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:56,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:56,083 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 02:13:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:13:56,083 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:56,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1449289051, now seen corresponding path program 3 times [2024-06-28 02:13:56,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:56,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079989401] [2024-06-28 02:13:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:56,909 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 02:13:56,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079989401] [2024-06-28 02:13:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079989401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:56,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:56,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974602372] [2024-06-28 02:13:56,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:56,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:56,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:56,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:56,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:13:56,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 357 transitions, 4599 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:56,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:56,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:13:56,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:58,686 INFO L124 PetriNetUnfolderBase]: 5205/8731 cut-off events. [2024-06-28 02:13:58,686 INFO L125 PetriNetUnfolderBase]: For 217441/217441 co-relation queries the response was YES. [2024-06-28 02:13:58,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54682 conditions, 8731 events. 5205/8731 cut-off events. For 217441/217441 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 61905 event pairs, 1397 based on Foata normal form. 12/8563 useless extension candidates. Maximal degree in co-relation 54574. Up to 6831 conditions per place. [2024-06-28 02:13:58,805 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 325 selfloop transitions, 80 changer transitions 0/417 dead transitions. [2024-06-28 02:13:58,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 417 transitions, 5739 flow [2024-06-28 02:13:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 02:13:58,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-28 02:13:58,806 INFO L175 Difference]: Start difference. First operand has 234 places, 357 transitions, 4599 flow. Second operand 9 states and 246 transitions. [2024-06-28 02:13:58,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 417 transitions, 5739 flow [2024-06-28 02:13:59,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 417 transitions, 5592 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:59,401 INFO L231 Difference]: Finished difference. Result has 240 places, 361 transitions, 4698 flow [2024-06-28 02:13:59,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4698, PETRI_PLACES=240, PETRI_TRANSITIONS=361} [2024-06-28 02:13:59,402 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-28 02:13:59,402 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 361 transitions, 4698 flow [2024-06-28 02:13:59,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:59,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:59,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:59,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:13:59,402 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:59,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1360306247, now seen corresponding path program 4 times [2024-06-28 02:13:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:59,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543957304] [2024-06-28 02:13:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:59,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:00,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543957304] [2024-06-28 02:14:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543957304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:00,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137665678] [2024-06-28 02:14:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:00,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:00,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 361 transitions, 4698 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:00,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:00,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:00,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:02,016 INFO L124 PetriNetUnfolderBase]: 5185/8555 cut-off events. [2024-06-28 02:14:02,016 INFO L125 PetriNetUnfolderBase]: For 212839/212839 co-relation queries the response was YES. [2024-06-28 02:14:02,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53693 conditions, 8555 events. 5185/8555 cut-off events. For 212839/212839 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 59594 event pairs, 1177 based on Foata normal form. 12/8427 useless extension candidates. Maximal degree in co-relation 53583. Up to 5751 conditions per place. [2024-06-28 02:14:02,112 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 316 selfloop transitions, 89 changer transitions 0/417 dead transitions. [2024-06-28 02:14:02,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 417 transitions, 5726 flow [2024-06-28 02:14:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 02:14:02,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2024-06-28 02:14:02,113 INFO L175 Difference]: Start difference. First operand has 240 places, 361 transitions, 4698 flow. Second operand 9 states and 245 transitions. [2024-06-28 02:14:02,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 417 transitions, 5726 flow [2024-06-28 02:14:02,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 417 transitions, 5588 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:02,605 INFO L231 Difference]: Finished difference. Result has 244 places, 360 transitions, 4698 flow [2024-06-28 02:14:02,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4698, PETRI_PLACES=244, PETRI_TRANSITIONS=360} [2024-06-28 02:14:02,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-28 02:14:02,605 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 360 transitions, 4698 flow [2024-06-28 02:14:02,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:02,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:02,606 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 02:14:02,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:14:02,606 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 02:14:02,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1614878180, now seen corresponding path program 1 times [2024-06-28 02:14:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249824858] [2024-06-28 02:14:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:03,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:03,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249824858] [2024-06-28 02:14:03,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249824858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:03,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:03,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794083541] [2024-06-28 02:14:03,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:03,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:03,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:14:03,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 360 transitions, 4698 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:03,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:03,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:14:03,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:05,123 INFO L124 PetriNetUnfolderBase]: 5005/8759 cut-off events. [2024-06-28 02:14:05,123 INFO L125 PetriNetUnfolderBase]: For 216119/216163 co-relation queries the response was YES. [2024-06-28 02:14:05,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52333 conditions, 8759 events. 5005/8759 cut-off events. For 216119/216163 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 64407 event pairs, 1322 based on Foata normal form. 16/8461 useless extension candidates. Maximal degree in co-relation 52222. Up to 6617 conditions per place. [2024-06-28 02:14:05,249 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 258 selfloop transitions, 66 changer transitions 0/394 dead transitions. [2024-06-28 02:14:05,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 394 transitions, 5518 flow [2024-06-28 02:14:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:14:05,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:14:05,250 INFO L175 Difference]: Start difference. First operand has 244 places, 360 transitions, 4698 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:14:05,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 394 transitions, 5518 flow [2024-06-28 02:14:05,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 394 transitions, 5290 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:14:05,783 INFO L231 Difference]: Finished difference. Result has 244 places, 361 transitions, 4625 flow [2024-06-28 02:14:05,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4470, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4625, PETRI_PLACES=244, PETRI_TRANSITIONS=361} [2024-06-28 02:14:05,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-28 02:14:05,784 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 361 transitions, 4625 flow [2024-06-28 02:14:05,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:05,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:05,784 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 02:14:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:14:05,785 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 02:14:05,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash 677990670, now seen corresponding path program 2 times [2024-06-28 02:14:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:05,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061999202] [2024-06-28 02:14:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:05,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:06,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:06,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061999202] [2024-06-28 02:14:06,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061999202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:06,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:06,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:06,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131148784] [2024-06-28 02:14:06,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:06,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:06,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:06,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:14:06,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 361 transitions, 4625 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:06,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:06,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:14:06,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:08,187 INFO L124 PetriNetUnfolderBase]: 5106/8960 cut-off events. [2024-06-28 02:14:08,188 INFO L125 PetriNetUnfolderBase]: For 216706/216750 co-relation queries the response was YES. [2024-06-28 02:14:08,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52407 conditions, 8960 events. 5106/8960 cut-off events. For 216706/216750 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 66350 event pairs, 1344 based on Foata normal form. 34/8683 useless extension candidates. Maximal degree in co-relation 52296. Up to 6738 conditions per place. [2024-06-28 02:14:08,311 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 258 selfloop transitions, 67 changer transitions 0/395 dead transitions. [2024-06-28 02:14:08,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 395 transitions, 5449 flow [2024-06-28 02:14:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:14:08,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:14:08,313 INFO L175 Difference]: Start difference. First operand has 244 places, 361 transitions, 4625 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:14:08,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 395 transitions, 5449 flow [2024-06-28 02:14:08,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 395 transitions, 5312 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:08,765 INFO L231 Difference]: Finished difference. Result has 246 places, 362 transitions, 4647 flow [2024-06-28 02:14:08,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4647, PETRI_PLACES=246, PETRI_TRANSITIONS=362} [2024-06-28 02:14:08,766 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-28 02:14:08,766 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 362 transitions, 4647 flow [2024-06-28 02:14:08,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:08,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:08,766 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 02:14:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:14:08,767 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 02:14:08,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1597736420, now seen corresponding path program 3 times [2024-06-28 02:14:08,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:08,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561092513] [2024-06-28 02:14:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561092513] [2024-06-28 02:14:09,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561092513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:09,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:09,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:09,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253594550] [2024-06-28 02:14:09,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:09,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 02:14:09,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 362 transitions, 4647 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:09,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:09,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 02:14:09,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:11,265 INFO L124 PetriNetUnfolderBase]: 5140/9014 cut-off events. [2024-06-28 02:14:11,266 INFO L125 PetriNetUnfolderBase]: For 216491/216528 co-relation queries the response was YES. [2024-06-28 02:14:11,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52542 conditions, 9014 events. 5140/9014 cut-off events. For 216491/216528 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 66692 event pairs, 1334 based on Foata normal form. 34/8737 useless extension candidates. Maximal degree in co-relation 52430. Up to 6420 conditions per place. [2024-06-28 02:14:11,389 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 259 selfloop transitions, 70 changer transitions 0/399 dead transitions. [2024-06-28 02:14:11,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 399 transitions, 5497 flow [2024-06-28 02:14:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 02:14:11,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 02:14:11,391 INFO L175 Difference]: Start difference. First operand has 246 places, 362 transitions, 4647 flow. Second operand 8 states and 210 transitions. [2024-06-28 02:14:11,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 399 transitions, 5497 flow [2024-06-28 02:14:11,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 399 transitions, 5356 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:11,941 INFO L231 Difference]: Finished difference. Result has 248 places, 363 transitions, 4672 flow [2024-06-28 02:14:11,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4506, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4672, PETRI_PLACES=248, PETRI_TRANSITIONS=363} [2024-06-28 02:14:11,944 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-28 02:14:11,944 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 363 transitions, 4672 flow [2024-06-28 02:14:11,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:11,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:11,945 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 02:14:11,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:14:11,945 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 02:14:11,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2055208226, now seen corresponding path program 1 times [2024-06-28 02:14:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:11,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119631629] [2024-06-28 02:14:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:12,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119631629] [2024-06-28 02:14:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119631629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:12,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:12,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:12,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458329854] [2024-06-28 02:14:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:12,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:12,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:12,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:12,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:12,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 363 transitions, 4672 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:12,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:12,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:12,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:14,593 INFO L124 PetriNetUnfolderBase]: 5506/9294 cut-off events. [2024-06-28 02:14:14,594 INFO L125 PetriNetUnfolderBase]: For 220113/220113 co-relation queries the response was YES. [2024-06-28 02:14:14,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55958 conditions, 9294 events. 5506/9294 cut-off events. For 220113/220113 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 67045 event pairs, 1576 based on Foata normal form. 2/9093 useless extension candidates. Maximal degree in co-relation 55845. Up to 7789 conditions per place. [2024-06-28 02:14:14,702 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 332 selfloop transitions, 68 changer transitions 0/412 dead transitions. [2024-06-28 02:14:14,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 412 transitions, 5955 flow [2024-06-28 02:14:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:14:14,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 02:14:14,703 INFO L175 Difference]: Start difference. First operand has 248 places, 363 transitions, 4672 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:14:14,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 412 transitions, 5955 flow [2024-06-28 02:14:15,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 412 transitions, 5805 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:15,386 INFO L231 Difference]: Finished difference. Result has 252 places, 381 transitions, 4988 flow [2024-06-28 02:14:15,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4988, PETRI_PLACES=252, PETRI_TRANSITIONS=381} [2024-06-28 02:14:15,387 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 02:14:15,387 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 381 transitions, 4988 flow [2024-06-28 02:14:15,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:15,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:15,387 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 02:14:15,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:14:15,387 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 02:14:15,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2090980832, now seen corresponding path program 1 times [2024-06-28 02:14:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118464202] [2024-06-28 02:14:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:15,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118464202] [2024-06-28 02:14:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118464202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:16,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:16,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15430715] [2024-06-28 02:14:16,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:16,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:16,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 381 transitions, 4988 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:16,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:16,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:16,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:18,042 INFO L124 PetriNetUnfolderBase]: 5562/9352 cut-off events. [2024-06-28 02:14:18,042 INFO L125 PetriNetUnfolderBase]: For 238740/238740 co-relation queries the response was YES. [2024-06-28 02:14:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57569 conditions, 9352 events. 5562/9352 cut-off events. For 238740/238740 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 67125 event pairs, 1535 based on Foata normal form. 4/9159 useless extension candidates. Maximal degree in co-relation 57453. Up to 7777 conditions per place. [2024-06-28 02:14:18,153 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 334 selfloop transitions, 77 changer transitions 0/423 dead transitions. [2024-06-28 02:14:18,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 423 transitions, 6107 flow [2024-06-28 02:14:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 02:14:18,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 02:14:18,155 INFO L175 Difference]: Start difference. First operand has 252 places, 381 transitions, 4988 flow. Second operand 9 states and 228 transitions. [2024-06-28 02:14:18,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 423 transitions, 6107 flow [2024-06-28 02:14:18,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 423 transitions, 5929 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:18,856 INFO L231 Difference]: Finished difference. Result has 258 places, 384 transitions, 5060 flow [2024-06-28 02:14:18,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5060, PETRI_PLACES=258, PETRI_TRANSITIONS=384} [2024-06-28 02:14:18,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-28 02:14:18,856 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 384 transitions, 5060 flow [2024-06-28 02:14:18,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:18,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:18,857 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 02:14:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:14:18,857 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 02:14:18,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1608204996, now seen corresponding path program 2 times [2024-06-28 02:14:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131499799] [2024-06-28 02:14:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:19,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131499799] [2024-06-28 02:14:19,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131499799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:19,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:19,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:14:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609060157] [2024-06-28 02:14:19,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:19,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:14:19,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:19,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:14:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:14:19,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:19,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 384 transitions, 5060 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:19,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:19,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:19,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:21,913 INFO L124 PetriNetUnfolderBase]: 5618/9473 cut-off events. [2024-06-28 02:14:21,913 INFO L125 PetriNetUnfolderBase]: For 254044/254044 co-relation queries the response was YES. [2024-06-28 02:14:22,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58945 conditions, 9473 events. 5618/9473 cut-off events. For 254044/254044 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 68194 event pairs, 1416 based on Foata normal form. 4/9278 useless extension candidates. Maximal degree in co-relation 58827. Up to 7587 conditions per place. [2024-06-28 02:14:22,061 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 296 selfloop transitions, 117 changer transitions 0/425 dead transitions. [2024-06-28 02:14:22,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 425 transitions, 6200 flow [2024-06-28 02:14:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 02:14:22,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 02:14:22,062 INFO L175 Difference]: Start difference. First operand has 258 places, 384 transitions, 5060 flow. Second operand 9 states and 228 transitions. [2024-06-28 02:14:22,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 425 transitions, 6200 flow [2024-06-28 02:14:22,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 425 transitions, 5972 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 02:14:22,811 INFO L231 Difference]: Finished difference. Result has 260 places, 387 transitions, 5168 flow [2024-06-28 02:14:22,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4832, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5168, PETRI_PLACES=260, PETRI_TRANSITIONS=387} [2024-06-28 02:14:22,812 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-28 02:14:22,812 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 387 transitions, 5168 flow [2024-06-28 02:14:22,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:22,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:22,812 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 02:14:22,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:14:22,812 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 02:14:22,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1002724038, now seen corresponding path program 3 times [2024-06-28 02:14:22,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:22,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435792617] [2024-06-28 02:14:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:22,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:23,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435792617] [2024-06-28 02:14:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435792617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:14:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203957030] [2024-06-28 02:14:23,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:14:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:14:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:14:23,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:23,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 387 transitions, 5168 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:23,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:23,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:23,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:25,619 INFO L124 PetriNetUnfolderBase]: 5674/9763 cut-off events. [2024-06-28 02:14:25,619 INFO L125 PetriNetUnfolderBase]: For 268718/268718 co-relation queries the response was YES. [2024-06-28 02:14:25,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60408 conditions, 9763 events. 5674/9763 cut-off events. For 268718/268718 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 71433 event pairs, 1428 based on Foata normal form. 4/9520 useless extension candidates. Maximal degree in co-relation 60289. Up to 7567 conditions per place. [2024-06-28 02:14:25,765 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 285 selfloop transitions, 131 changer transitions 0/428 dead transitions. [2024-06-28 02:14:25,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 428 transitions, 6322 flow [2024-06-28 02:14:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:14:25,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 02:14:25,766 INFO L175 Difference]: Start difference. First operand has 260 places, 387 transitions, 5168 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:14:25,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 428 transitions, 6322 flow [2024-06-28 02:14:26,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 428 transitions, 6008 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 02:14:26,422 INFO L231 Difference]: Finished difference. Result has 262 places, 390 transitions, 5224 flow [2024-06-28 02:14:26,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4854, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5224, PETRI_PLACES=262, PETRI_TRANSITIONS=390} [2024-06-28 02:14:26,423 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 208 predicate places. [2024-06-28 02:14:26,423 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 390 transitions, 5224 flow [2024-06-28 02:14:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:26,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:26,423 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 02:14:26,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:14:26,424 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 02:14:26,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1597729476, now seen corresponding path program 4 times [2024-06-28 02:14:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162650062] [2024-06-28 02:14:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:26,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:27,341 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 02:14:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162650062] [2024-06-28 02:14:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162650062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:27,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:27,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:14:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042746281] [2024-06-28 02:14:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:14:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:14:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:14:27,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:27,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 390 transitions, 5224 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:27,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:27,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:27,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:29,254 INFO L124 PetriNetUnfolderBase]: 5763/9948 cut-off events. [2024-06-28 02:14:29,254 INFO L125 PetriNetUnfolderBase]: For 286679/286679 co-relation queries the response was YES. [2024-06-28 02:14:29,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62087 conditions, 9948 events. 5763/9948 cut-off events. For 286679/286679 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 73181 event pairs, 1392 based on Foata normal form. 4/9695 useless extension candidates. Maximal degree in co-relation 61967. Up to 7456 conditions per place. [2024-06-28 02:14:29,398 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 281 selfloop transitions, 144 changer transitions 0/437 dead transitions. [2024-06-28 02:14:29,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 437 transitions, 6626 flow [2024-06-28 02:14:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 02:14:29,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 02:14:29,399 INFO L175 Difference]: Start difference. First operand has 262 places, 390 transitions, 5224 flow. Second operand 9 states and 231 transitions. [2024-06-28 02:14:29,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 437 transitions, 6626 flow [2024-06-28 02:14:30,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 437 transitions, 6278 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 02:14:30,108 INFO L231 Difference]: Finished difference. Result has 265 places, 397 transitions, 5411 flow [2024-06-28 02:14:30,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4876, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5411, PETRI_PLACES=265, PETRI_TRANSITIONS=397} [2024-06-28 02:14:30,109 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-28 02:14:30,109 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 397 transitions, 5411 flow [2024-06-28 02:14:30,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:30,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:30,109 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 02:14:30,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:14:30,109 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 02:14:30,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:30,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1893304866, now seen corresponding path program 5 times [2024-06-28 02:14:30,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:30,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332429550] [2024-06-28 02:14:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:31,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332429550] [2024-06-28 02:14:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332429550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:31,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:31,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:31,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370934727] [2024-06-28 02:14:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:31,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:31,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:31,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 397 transitions, 5411 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:31,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:31,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:31,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:32,923 INFO L124 PetriNetUnfolderBase]: 5753/9688 cut-off events. [2024-06-28 02:14:32,924 INFO L125 PetriNetUnfolderBase]: For 290207/290207 co-relation queries the response was YES. [2024-06-28 02:14:33,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62086 conditions, 9688 events. 5753/9688 cut-off events. For 290207/290207 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 69779 event pairs, 1424 based on Foata normal form. 4/9495 useless extension candidates. Maximal degree in co-relation 61964. Up to 7780 conditions per place. [2024-06-28 02:14:33,076 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 321 selfloop transitions, 104 changer transitions 0/437 dead transitions. [2024-06-28 02:14:33,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 437 transitions, 6582 flow [2024-06-28 02:14:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 02:14:33,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 02:14:33,077 INFO L175 Difference]: Start difference. First operand has 265 places, 397 transitions, 5411 flow. Second operand 9 states and 228 transitions. [2024-06-28 02:14:33,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 437 transitions, 6582 flow [2024-06-28 02:14:34,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 437 transitions, 6126 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:34,090 INFO L231 Difference]: Finished difference. Result has 268 places, 398 transitions, 5204 flow [2024-06-28 02:14:34,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4977, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5204, PETRI_PLACES=268, PETRI_TRANSITIONS=398} [2024-06-28 02:14:34,090 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-28 02:14:34,090 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 398 transitions, 5204 flow [2024-06-28 02:14:34,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:34,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:34,091 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 02:14:34,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:14:34,091 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:34,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:34,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1942834868, now seen corresponding path program 1 times [2024-06-28 02:14:34,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:34,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981419876] [2024-06-28 02:14:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:34,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:34,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981419876] [2024-06-28 02:14:34,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981419876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:34,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:34,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:14:34,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755951860] [2024-06-28 02:14:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:34,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:14:34,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:14:34,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:14:34,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-06-28 02:14:34,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 398 transitions, 5204 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:34,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:34,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-06-28 02:14:34,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:35,447 INFO L124 PetriNetUnfolderBase]: 4072/7563 cut-off events. [2024-06-28 02:14:35,447 INFO L125 PetriNetUnfolderBase]: For 178368/178897 co-relation queries the response was YES. [2024-06-28 02:14:35,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41814 conditions, 7563 events. 4072/7563 cut-off events. For 178368/178897 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 59012 event pairs, 616 based on Foata normal form. 361/7409 useless extension candidates. Maximal degree in co-relation 41692. Up to 2688 conditions per place. [2024-06-28 02:14:35,542 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 148 selfloop transitions, 54 changer transitions 0/360 dead transitions. [2024-06-28 02:14:35,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 360 transitions, 4967 flow [2024-06-28 02:14:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:14:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:14:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-28 02:14:35,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-06-28 02:14:35,543 INFO L175 Difference]: Start difference. First operand has 268 places, 398 transitions, 5204 flow. Second operand 4 states and 139 transitions. [2024-06-28 02:14:35,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 360 transitions, 4967 flow [2024-06-28 02:14:35,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 360 transitions, 4302 flow, removed 24 selfloop flow, removed 33 redundant places. [2024-06-28 02:14:35,972 INFO L231 Difference]: Finished difference. Result has 240 places, 321 transitions, 3755 flow [2024-06-28 02:14:35,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3755, PETRI_PLACES=240, PETRI_TRANSITIONS=321} [2024-06-28 02:14:35,973 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-28 02:14:35,973 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 321 transitions, 3755 flow [2024-06-28 02:14:35,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:35,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:35,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:35,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:14:35,973 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 02:14:35,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:35,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1175053242, now seen corresponding path program 1 times [2024-06-28 02:14:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:35,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893149858] [2024-06-28 02:14:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:35,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:36,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:36,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893149858] [2024-06-28 02:14:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893149858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349771705] [2024-06-28 02:14:36,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:36,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:36,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:36,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 321 transitions, 3755 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:36,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:36,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:36,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:38,486 INFO L124 PetriNetUnfolderBase]: 5137/9005 cut-off events. [2024-06-28 02:14:38,486 INFO L125 PetriNetUnfolderBase]: For 259077/259077 co-relation queries the response was YES. [2024-06-28 02:14:38,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53124 conditions, 9005 events. 5137/9005 cut-off events. For 259077/259077 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 66198 event pairs, 1728 based on Foata normal form. 1/8656 useless extension candidates. Maximal degree in co-relation 53015. Up to 7523 conditions per place. [2024-06-28 02:14:38,597 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 280 selfloop transitions, 51 changer transitions 0/344 dead transitions. [2024-06-28 02:14:38,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 344 transitions, 4573 flow [2024-06-28 02:14:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:14:38,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:14:38,598 INFO L175 Difference]: Start difference. First operand has 240 places, 321 transitions, 3755 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:14:38,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 344 transitions, 4573 flow [2024-06-28 02:14:39,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 344 transitions, 4558 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:14:39,225 INFO L231 Difference]: Finished difference. Result has 247 places, 326 transitions, 3960 flow [2024-06-28 02:14:39,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3960, PETRI_PLACES=247, PETRI_TRANSITIONS=326} [2024-06-28 02:14:39,226 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 193 predicate places. [2024-06-28 02:14:39,226 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 326 transitions, 3960 flow [2024-06-28 02:14:39,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:39,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:39,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:14:39,227 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 02:14:39,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash 527509608, now seen corresponding path program 1 times [2024-06-28 02:14:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706198474] [2024-06-28 02:14:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:39,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:39,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706198474] [2024-06-28 02:14:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706198474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:39,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:39,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:39,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215897214] [2024-06-28 02:14:39,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:39,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:39,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:39,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:39,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 326 transitions, 3960 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:39,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:39,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:39,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:41,548 INFO L124 PetriNetUnfolderBase]: 5156/8958 cut-off events. [2024-06-28 02:14:41,548 INFO L125 PetriNetUnfolderBase]: For 271178/271178 co-relation queries the response was YES. [2024-06-28 02:14:41,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54013 conditions, 8958 events. 5156/8958 cut-off events. For 271178/271178 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65501 event pairs, 1632 based on Foata normal form. 2/8634 useless extension candidates. Maximal degree in co-relation 53900. Up to 7612 conditions per place. [2024-06-28 02:14:41,820 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 317 selfloop transitions, 29 changer transitions 0/359 dead transitions. [2024-06-28 02:14:41,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 359 transitions, 4850 flow [2024-06-28 02:14:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:14:41,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:14:41,822 INFO L175 Difference]: Start difference. First operand has 247 places, 326 transitions, 3960 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:14:41,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 359 transitions, 4850 flow [2024-06-28 02:14:42,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 359 transitions, 4716 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:42,542 INFO L231 Difference]: Finished difference. Result has 252 places, 330 transitions, 3971 flow [2024-06-28 02:14:42,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3971, PETRI_PLACES=252, PETRI_TRANSITIONS=330} [2024-06-28 02:14:42,542 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 02:14:42,543 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 330 transitions, 3971 flow [2024-06-28 02:14:42,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:42,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:42,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:14:42,543 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 02:14:42,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1297762572, now seen corresponding path program 2 times [2024-06-28 02:14:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555158165] [2024-06-28 02:14:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:43,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555158165] [2024-06-28 02:14:43,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555158165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:43,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:43,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:43,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813053160] [2024-06-28 02:14:43,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:43,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:43,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:43,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:43,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:43,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:43,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 330 transitions, 3971 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:43,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:43,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:43,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:44,765 INFO L124 PetriNetUnfolderBase]: 5175/8985 cut-off events. [2024-06-28 02:14:44,765 INFO L125 PetriNetUnfolderBase]: For 278243/278243 co-relation queries the response was YES. [2024-06-28 02:14:44,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54456 conditions, 8985 events. 5175/8985 cut-off events. For 278243/278243 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65675 event pairs, 1638 based on Foata normal form. 2/8657 useless extension candidates. Maximal degree in co-relation 54341. Up to 7540 conditions per place. [2024-06-28 02:14:44,879 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 300 selfloop transitions, 49 changer transitions 0/362 dead transitions. [2024-06-28 02:14:44,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 362 transitions, 4871 flow [2024-06-28 02:14:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:14:44,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 02:14:44,880 INFO L175 Difference]: Start difference. First operand has 252 places, 330 transitions, 3971 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:14:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 362 transitions, 4871 flow [2024-06-28 02:14:45,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 362 transitions, 4774 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:14:45,659 INFO L231 Difference]: Finished difference. Result has 255 places, 333 transitions, 4048 flow [2024-06-28 02:14:45,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4048, PETRI_PLACES=255, PETRI_TRANSITIONS=333} [2024-06-28 02:14:45,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-28 02:14:45,660 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 333 transitions, 4048 flow [2024-06-28 02:14:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:45,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:45,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:14:45,660 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:45,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash -548040666, now seen corresponding path program 3 times [2024-06-28 02:14:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:45,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131565943] [2024-06-28 02:14:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131565943] [2024-06-28 02:14:46,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131565943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:46,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:46,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884815272] [2024-06-28 02:14:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:46,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:46,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:46,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 333 transitions, 4048 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:46,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:46,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:46,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:47,863 INFO L124 PetriNetUnfolderBase]: 5194/9019 cut-off events. [2024-06-28 02:14:47,863 INFO L125 PetriNetUnfolderBase]: For 283931/283931 co-relation queries the response was YES. [2024-06-28 02:14:47,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55015 conditions, 9019 events. 5194/9019 cut-off events. For 283931/283931 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65989 event pairs, 1638 based on Foata normal form. 2/8688 useless extension candidates. Maximal degree in co-relation 54899. Up to 7497 conditions per place. [2024-06-28 02:14:47,981 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 285 selfloop transitions, 66 changer transitions 0/364 dead transitions. [2024-06-28 02:14:47,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 364 transitions, 4981 flow [2024-06-28 02:14:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:14:47,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:14:47,982 INFO L175 Difference]: Start difference. First operand has 255 places, 333 transitions, 4048 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:14:47,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 364 transitions, 4981 flow [2024-06-28 02:14:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 364 transitions, 4837 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:48,789 INFO L231 Difference]: Finished difference. Result has 257 places, 336 transitions, 4123 flow [2024-06-28 02:14:48,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4123, PETRI_PLACES=257, PETRI_TRANSITIONS=336} [2024-06-28 02:14:48,790 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 203 predicate places. [2024-06-28 02:14:48,790 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 336 transitions, 4123 flow [2024-06-28 02:14:48,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:48,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:48,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:48,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:14:48,790 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:48,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1203282924, now seen corresponding path program 4 times [2024-06-28 02:14:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:48,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399292722] [2024-06-28 02:14:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:48,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399292722] [2024-06-28 02:14:49,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399292722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:49,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:49,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:49,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68712814] [2024-06-28 02:14:49,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:49,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:49,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:49,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:49,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 336 transitions, 4123 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:49,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:49,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:49,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:51,189 INFO L124 PetriNetUnfolderBase]: 5231/9081 cut-off events. [2024-06-28 02:14:51,190 INFO L125 PetriNetUnfolderBase]: For 291887/291887 co-relation queries the response was YES. [2024-06-28 02:14:51,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55712 conditions, 9081 events. 5231/9081 cut-off events. For 291887/291887 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 66452 event pairs, 1631 based on Foata normal form. 2/8746 useless extension candidates. Maximal degree in co-relation 55596. Up to 7688 conditions per place. [2024-06-28 02:14:51,311 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 326 selfloop transitions, 38 changer transitions 0/377 dead transitions. [2024-06-28 02:14:51,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 377 transitions, 5163 flow [2024-06-28 02:14:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 02:14:51,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 02:14:51,312 INFO L175 Difference]: Start difference. First operand has 257 places, 336 transitions, 4123 flow. Second operand 9 states and 218 transitions. [2024-06-28 02:14:51,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 377 transitions, 5163 flow [2024-06-28 02:14:52,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 377 transitions, 4984 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:52,248 INFO L231 Difference]: Finished difference. Result has 261 places, 345 transitions, 4207 flow [2024-06-28 02:14:52,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3944, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4207, PETRI_PLACES=261, PETRI_TRANSITIONS=345} [2024-06-28 02:14:52,248 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-28 02:14:52,248 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 345 transitions, 4207 flow [2024-06-28 02:14:52,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:52,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:52,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:52,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:14:52,249 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:52,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash 47064262, now seen corresponding path program 5 times [2024-06-28 02:14:52,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:52,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72540347] [2024-06-28 02:14:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:52,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72540347] [2024-06-28 02:14:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72540347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:52,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:52,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:52,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240842670] [2024-06-28 02:14:52,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:52,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:52,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:52,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:52,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:52,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 345 transitions, 4207 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:52,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:52,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:52,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:54,521 INFO L124 PetriNetUnfolderBase]: 5300/9185 cut-off events. [2024-06-28 02:14:54,522 INFO L125 PetriNetUnfolderBase]: For 309054/309054 co-relation queries the response was YES. [2024-06-28 02:14:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57181 conditions, 9185 events. 5300/9185 cut-off events. For 309054/309054 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 67244 event pairs, 1647 based on Foata normal form. 2/8839 useless extension candidates. Maximal degree in co-relation 57063. Up to 7517 conditions per place. [2024-06-28 02:14:54,651 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 277 selfloop transitions, 91 changer transitions 0/381 dead transitions. [2024-06-28 02:14:54,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 381 transitions, 5603 flow [2024-06-28 02:14:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:14:54,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 02:14:54,652 INFO L175 Difference]: Start difference. First operand has 261 places, 345 transitions, 4207 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:14:54,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 381 transitions, 5603 flow [2024-06-28 02:14:55,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 381 transitions, 5474 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:55,487 INFO L231 Difference]: Finished difference. Result has 263 places, 354 transitions, 4519 flow [2024-06-28 02:14:55,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4519, PETRI_PLACES=263, PETRI_TRANSITIONS=354} [2024-06-28 02:14:55,488 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-28 02:14:55,488 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 354 transitions, 4519 flow [2024-06-28 02:14:55,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:55,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:55,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:55,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:14:55,488 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:55,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1493401750, now seen corresponding path program 6 times [2024-06-28 02:14:55,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:55,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974976892] [2024-06-28 02:14:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:55,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974976892] [2024-06-28 02:14:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974976892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:56,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:56,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489952822] [2024-06-28 02:14:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:56,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:56,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 354 transitions, 4519 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:56,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:56,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:56,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:57,983 INFO L124 PetriNetUnfolderBase]: 5294/9178 cut-off events. [2024-06-28 02:14:57,983 INFO L125 PetriNetUnfolderBase]: For 314002/314002 co-relation queries the response was YES. [2024-06-28 02:14:58,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57332 conditions, 9178 events. 5294/9178 cut-off events. For 314002/314002 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 67200 event pairs, 1634 based on Foata normal form. 2/8834 useless extension candidates. Maximal degree in co-relation 57213. Up to 7775 conditions per place. [2024-06-28 02:14:58,102 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 323 selfloop transitions, 39 changer transitions 0/375 dead transitions. [2024-06-28 02:14:58,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 375 transitions, 5343 flow [2024-06-28 02:14:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:14:58,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 02:14:58,103 INFO L175 Difference]: Start difference. First operand has 263 places, 354 transitions, 4519 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:14:58,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 375 transitions, 5343 flow [2024-06-28 02:14:59,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 375 transitions, 5164 flow, removed 69 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:59,197 INFO L231 Difference]: Finished difference. Result has 268 places, 354 transitions, 4425 flow [2024-06-28 02:14:59,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4425, PETRI_PLACES=268, PETRI_TRANSITIONS=354} [2024-06-28 02:14:59,198 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-28 02:14:59,198 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 354 transitions, 4425 flow [2024-06-28 02:14:59,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:59,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:59,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:59,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:14:59,198 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:59,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 72763096, now seen corresponding path program 1 times [2024-06-28 02:14:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500863112] [2024-06-28 02:14:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:59,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:59,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500863112] [2024-06-28 02:14:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500863112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:59,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:59,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954214203] [2024-06-28 02:14:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:59,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:59,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:59,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:59,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:14:59,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 354 transitions, 4425 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:59,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:59,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:14:59,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:01,733 INFO L124 PetriNetUnfolderBase]: 5369/9270 cut-off events. [2024-06-28 02:15:01,733 INFO L125 PetriNetUnfolderBase]: For 320208/320208 co-relation queries the response was YES. [2024-06-28 02:15:01,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57886 conditions, 9270 events. 5369/9270 cut-off events. For 320208/320208 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 67682 event pairs, 1607 based on Foata normal form. 2/8913 useless extension candidates. Maximal degree in co-relation 57765. Up to 7866 conditions per place. [2024-06-28 02:15:01,852 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 349 selfloop transitions, 31 changer transitions 0/393 dead transitions. [2024-06-28 02:15:01,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 393 transitions, 5415 flow [2024-06-28 02:15:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:15:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:15:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 02:15:01,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-28 02:15:01,854 INFO L175 Difference]: Start difference. First operand has 268 places, 354 transitions, 4425 flow. Second operand 9 states and 217 transitions. [2024-06-28 02:15:01,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 393 transitions, 5415 flow [2024-06-28 02:15:03,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 393 transitions, 5276 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:15:03,061 INFO L231 Difference]: Finished difference. Result has 271 places, 362 transitions, 4484 flow [2024-06-28 02:15:03,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4293, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4484, PETRI_PLACES=271, PETRI_TRANSITIONS=362} [2024-06-28 02:15:03,062 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 217 predicate places. [2024-06-28 02:15:03,062 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 362 transitions, 4484 flow [2024-06-28 02:15:03,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:03,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:03,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:03,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:15:03,062 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:03,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -357197624, now seen corresponding path program 2 times [2024-06-28 02:15:03,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:03,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288618959] [2024-06-28 02:15:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:03,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:03,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:03,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288618959] [2024-06-28 02:15:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288618959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:03,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726923245] [2024-06-28 02:15:03,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:03,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:03,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:03,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 362 transitions, 4484 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:03,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:03,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:03,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:05,596 INFO L124 PetriNetUnfolderBase]: 5400/9350 cut-off events. [2024-06-28 02:15:05,597 INFO L125 PetriNetUnfolderBase]: For 329412/329412 co-relation queries the response was YES. [2024-06-28 02:15:05,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58915 conditions, 9350 events. 5400/9350 cut-off events. For 329412/329412 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 68514 event pairs, 1631 based on Foata normal form. 2/9001 useless extension candidates. Maximal degree in co-relation 58793. Up to 7936 conditions per place. [2024-06-28 02:15:05,756 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 346 selfloop transitions, 34 changer transitions 0/393 dead transitions. [2024-06-28 02:15:05,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 393 transitions, 5406 flow [2024-06-28 02:15:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:15:05,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 02:15:05,757 INFO L175 Difference]: Start difference. First operand has 271 places, 362 transitions, 4484 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:15:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 393 transitions, 5406 flow [2024-06-28 02:15:06,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 393 transitions, 5282 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:06,850 INFO L231 Difference]: Finished difference. Result has 273 places, 364 transitions, 4492 flow [2024-06-28 02:15:06,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4492, PETRI_PLACES=273, PETRI_TRANSITIONS=364} [2024-06-28 02:15:06,850 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-06-28 02:15:06,850 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 364 transitions, 4492 flow [2024-06-28 02:15:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:06,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:06,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:06,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:15:06,851 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:06,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:06,851 INFO L85 PathProgramCache]: Analyzing trace with hash 42299686, now seen corresponding path program 3 times [2024-06-28 02:15:06,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284576735] [2024-06-28 02:15:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:06,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:07,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284576735] [2024-06-28 02:15:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284576735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288922869] [2024-06-28 02:15:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:07,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:07,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:07,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:07,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 364 transitions, 4492 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:07,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:07,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:07,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:09,337 INFO L124 PetriNetUnfolderBase]: 5431/9401 cut-off events. [2024-06-28 02:15:09,338 INFO L125 PetriNetUnfolderBase]: For 339436/339436 co-relation queries the response was YES. [2024-06-28 02:15:09,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59395 conditions, 9401 events. 5431/9401 cut-off events. For 339436/339436 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 68836 event pairs, 1640 based on Foata normal form. 2/9050 useless extension candidates. Maximal degree in co-relation 59273. Up to 7958 conditions per place. [2024-06-28 02:15:09,452 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 336 selfloop transitions, 41 changer transitions 0/390 dead transitions. [2024-06-28 02:15:09,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 390 transitions, 5394 flow [2024-06-28 02:15:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:15:09,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 02:15:09,453 INFO L175 Difference]: Start difference. First operand has 273 places, 364 transitions, 4492 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:15:09,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 390 transitions, 5394 flow [2024-06-28 02:15:10,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 390 transitions, 5276 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:10,509 INFO L231 Difference]: Finished difference. Result has 275 places, 366 transitions, 4524 flow [2024-06-28 02:15:10,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4374, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4524, PETRI_PLACES=275, PETRI_TRANSITIONS=366} [2024-06-28 02:15:10,509 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-28 02:15:10,509 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 366 transitions, 4524 flow [2024-06-28 02:15:10,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:10,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:10,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:15:10,510 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 02:15:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2093024888, now seen corresponding path program 1 times [2024-06-28 02:15:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91893140] [2024-06-28 02:15:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91893140] [2024-06-28 02:15:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91893140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119840290] [2024-06-28 02:15:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:11,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:11,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:11,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 366 transitions, 4524 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:11,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:11,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:11,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:13,318 INFO L124 PetriNetUnfolderBase]: 5440/9410 cut-off events. [2024-06-28 02:15:13,318 INFO L125 PetriNetUnfolderBase]: For 343836/343836 co-relation queries the response was YES. [2024-06-28 02:15:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59515 conditions, 9410 events. 5440/9410 cut-off events. For 343836/343836 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 68955 event pairs, 1644 based on Foata normal form. 1/9054 useless extension candidates. Maximal degree in co-relation 59392. Up to 7944 conditions per place. [2024-06-28 02:15:13,451 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 336 selfloop transitions, 48 changer transitions 0/397 dead transitions. [2024-06-28 02:15:13,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 397 transitions, 5454 flow [2024-06-28 02:15:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:15:13,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:15:13,453 INFO L175 Difference]: Start difference. First operand has 275 places, 366 transitions, 4524 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:15:13,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 397 transitions, 5454 flow [2024-06-28 02:15:14,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 397 transitions, 5322 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:14,562 INFO L231 Difference]: Finished difference. Result has 277 places, 369 transitions, 4548 flow [2024-06-28 02:15:14,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4548, PETRI_PLACES=277, PETRI_TRANSITIONS=369} [2024-06-28 02:15:14,563 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-28 02:15:14,563 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 369 transitions, 4548 flow [2024-06-28 02:15:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:14,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:14,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:15:14,563 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:14,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 987302248, now seen corresponding path program 7 times [2024-06-28 02:15:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668581537] [2024-06-28 02:15:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668581537] [2024-06-28 02:15:15,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668581537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:15,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:15,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:15:15,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243508578] [2024-06-28 02:15:15,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:15,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:15:15,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:15:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:15:15,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:15,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 369 transitions, 4548 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:15,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:15,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:15,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:17,295 INFO L124 PetriNetUnfolderBase]: 5537/9636 cut-off events. [2024-06-28 02:15:17,295 INFO L125 PetriNetUnfolderBase]: For 353866/353866 co-relation queries the response was YES. [2024-06-28 02:15:17,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60630 conditions, 9636 events. 5537/9636 cut-off events. For 353866/353866 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 70919 event pairs, 1729 based on Foata normal form. 2/9247 useless extension candidates. Maximal degree in co-relation 60506. Up to 8001 conditions per place. [2024-06-28 02:15:17,402 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 332 selfloop transitions, 78 changer transitions 0/423 dead transitions. [2024-06-28 02:15:17,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 423 transitions, 6000 flow [2024-06-28 02:15:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:15:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:15:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2024-06-28 02:15:17,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-06-28 02:15:17,403 INFO L175 Difference]: Start difference. First operand has 277 places, 369 transitions, 4548 flow. Second operand 10 states and 231 transitions. [2024-06-28 02:15:17,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 423 transitions, 6000 flow [2024-06-28 02:15:18,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 423 transitions, 5856 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:18,456 INFO L231 Difference]: Finished difference. Result has 284 places, 400 transitions, 5151 flow [2024-06-28 02:15:18,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4428, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5151, PETRI_PLACES=284, PETRI_TRANSITIONS=400} [2024-06-28 02:15:18,457 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-06-28 02:15:18,457 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 400 transitions, 5151 flow [2024-06-28 02:15:18,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:18,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:18,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:18,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:15:18,458 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:18,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash -720096146, now seen corresponding path program 8 times [2024-06-28 02:15:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:18,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414570335] [2024-06-28 02:15:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:18,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:19,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:19,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414570335] [2024-06-28 02:15:19,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414570335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:19,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:19,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:19,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009178276] [2024-06-28 02:15:19,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:19,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:19,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:19,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:19,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:19,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 400 transitions, 5151 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:19,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:19,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:19,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:20,921 INFO L124 PetriNetUnfolderBase]: 5556/9667 cut-off events. [2024-06-28 02:15:20,921 INFO L125 PetriNetUnfolderBase]: For 364726/364726 co-relation queries the response was YES. [2024-06-28 02:15:21,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61818 conditions, 9667 events. 5556/9667 cut-off events. For 364726/364726 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 71227 event pairs, 1728 based on Foata normal form. 2/9275 useless extension candidates. Maximal degree in co-relation 61690. Up to 8013 conditions per place. [2024-06-28 02:15:21,067 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 339 selfloop transitions, 77 changer transitions 0/429 dead transitions. [2024-06-28 02:15:21,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 429 transitions, 6219 flow [2024-06-28 02:15:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:15:21,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 02:15:21,068 INFO L175 Difference]: Start difference. First operand has 284 places, 400 transitions, 5151 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:15:21,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 429 transitions, 6219 flow [2024-06-28 02:15:22,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 429 transitions, 6003 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 02:15:22,328 INFO L231 Difference]: Finished difference. Result has 287 places, 403 transitions, 5196 flow [2024-06-28 02:15:22,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4943, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5196, PETRI_PLACES=287, PETRI_TRANSITIONS=403} [2024-06-28 02:15:22,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 233 predicate places. [2024-06-28 02:15:22,329 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 403 transitions, 5196 flow [2024-06-28 02:15:22,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:22,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:22,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:22,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:15:22,330 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:22,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:22,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1256680180, now seen corresponding path program 9 times [2024-06-28 02:15:22,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746645702] [2024-06-28 02:15:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746645702] [2024-06-28 02:15:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746645702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:22,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:22,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900859897] [2024-06-28 02:15:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:22,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:22,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:22,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:22,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 403 transitions, 5196 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:22,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:22,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:22,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:24,825 INFO L124 PetriNetUnfolderBase]: 5550/9659 cut-off events. [2024-06-28 02:15:24,825 INFO L125 PetriNetUnfolderBase]: For 366174/366174 co-relation queries the response was YES. [2024-06-28 02:15:24,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61601 conditions, 9659 events. 5550/9659 cut-off events. For 366174/366174 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 71147 event pairs, 1728 based on Foata normal form. 2/9267 useless extension candidates. Maximal degree in co-relation 61472. Up to 7975 conditions per place. [2024-06-28 02:15:24,961 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 335 selfloop transitions, 81 changer transitions 0/429 dead transitions. [2024-06-28 02:15:24,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 429 transitions, 6203 flow [2024-06-28 02:15:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:15:24,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 02:15:24,962 INFO L175 Difference]: Start difference. First operand has 287 places, 403 transitions, 5196 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:15:24,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 429 transitions, 6203 flow [2024-06-28 02:15:26,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 429 transitions, 5901 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 02:15:26,200 INFO L231 Difference]: Finished difference. Result has 288 places, 403 transitions, 5063 flow [2024-06-28 02:15:26,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4894, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5063, PETRI_PLACES=288, PETRI_TRANSITIONS=403} [2024-06-28 02:15:26,200 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 234 predicate places. [2024-06-28 02:15:26,200 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 403 transitions, 5063 flow [2024-06-28 02:15:26,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:26,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:26,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:26,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:15:26,201 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:26,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1342705000, now seen corresponding path program 10 times [2024-06-28 02:15:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186707972] [2024-06-28 02:15:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:26,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:26,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186707972] [2024-06-28 02:15:26,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186707972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:26,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:26,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:26,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232704110] [2024-06-28 02:15:26,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:26,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:26,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:26,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:26,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:26,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:26,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 403 transitions, 5063 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:26,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:26,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:26,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:28,713 INFO L124 PetriNetUnfolderBase]: 5613/9752 cut-off events. [2024-06-28 02:15:28,713 INFO L125 PetriNetUnfolderBase]: For 376971/376971 co-relation queries the response was YES. [2024-06-28 02:15:28,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62419 conditions, 9752 events. 5613/9752 cut-off events. For 376971/376971 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 71808 event pairs, 1735 based on Foata normal form. 4/9353 useless extension candidates. Maximal degree in co-relation 62290. Up to 7797 conditions per place. [2024-06-28 02:15:28,849 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 314 selfloop transitions, 103 changer transitions 0/430 dead transitions. [2024-06-28 02:15:28,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 430 transitions, 6339 flow [2024-06-28 02:15:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:15:28,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:15:28,850 INFO L175 Difference]: Start difference. First operand has 288 places, 403 transitions, 5063 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:15:28,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 430 transitions, 6339 flow [2024-06-28 02:15:29,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 430 transitions, 6065 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:15:29,926 INFO L231 Difference]: Finished difference. Result has 288 places, 410 transitions, 5189 flow [2024-06-28 02:15:29,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5189, PETRI_PLACES=288, PETRI_TRANSITIONS=410} [2024-06-28 02:15:29,927 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 234 predicate places. [2024-06-28 02:15:29,927 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 410 transitions, 5189 flow [2024-06-28 02:15:29,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:29,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:29,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:29,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:15:29,928 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:29,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash -690419512, now seen corresponding path program 11 times [2024-06-28 02:15:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:29,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647253204] [2024-06-28 02:15:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:29,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:30,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:30,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647253204] [2024-06-28 02:15:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647253204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:30,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039561975] [2024-06-28 02:15:30,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:30,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:30,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:30,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 410 transitions, 5189 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:30,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:30,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:30,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:32,497 INFO L124 PetriNetUnfolderBase]: 5752/9979 cut-off events. [2024-06-28 02:15:32,497 INFO L125 PetriNetUnfolderBase]: For 415487/415487 co-relation queries the response was YES. [2024-06-28 02:15:32,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65802 conditions, 9979 events. 5752/9979 cut-off events. For 415487/415487 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 73626 event pairs, 1768 based on Foata normal form. 4/9557 useless extension candidates. Maximal degree in co-relation 65672. Up to 7562 conditions per place. [2024-06-28 02:15:32,629 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 280 selfloop transitions, 156 changer transitions 0/449 dead transitions. [2024-06-28 02:15:32,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 449 transitions, 7087 flow [2024-06-28 02:15:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:15:32,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:15:32,630 INFO L175 Difference]: Start difference. First operand has 288 places, 410 transitions, 5189 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:15:32,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 449 transitions, 7087 flow [2024-06-28 02:15:33,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 449 transitions, 6901 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 02:15:33,688 INFO L231 Difference]: Finished difference. Result has 292 places, 425 transitions, 5751 flow [2024-06-28 02:15:33,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5003, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5751, PETRI_PLACES=292, PETRI_TRANSITIONS=425} [2024-06-28 02:15:33,688 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 238 predicate places. [2024-06-28 02:15:33,688 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 425 transitions, 5751 flow [2024-06-28 02:15:33,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:33,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:33,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:33,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:15:33,689 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:33,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:33,689 INFO L85 PathProgramCache]: Analyzing trace with hash 910508294, now seen corresponding path program 12 times [2024-06-28 02:15:33,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:33,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111652813] [2024-06-28 02:15:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:33,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:34,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:34,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111652813] [2024-06-28 02:15:34,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111652813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:34,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:34,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:34,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537511616] [2024-06-28 02:15:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:34,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:34,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:34,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 425 transitions, 5751 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:34,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:34,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:34,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:36,403 INFO L124 PetriNetUnfolderBase]: 5740/9958 cut-off events. [2024-06-28 02:15:36,403 INFO L125 PetriNetUnfolderBase]: For 415518/415518 co-relation queries the response was YES. [2024-06-28 02:15:36,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66076 conditions, 9958 events. 5740/9958 cut-off events. For 415518/415518 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 73451 event pairs, 1741 based on Foata normal form. 4/9540 useless extension candidates. Maximal degree in co-relation 65944. Up to 8314 conditions per place. [2024-06-28 02:15:36,532 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 378 selfloop transitions, 50 changer transitions 0/441 dead transitions. [2024-06-28 02:15:36,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 441 transitions, 6701 flow [2024-06-28 02:15:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:15:36,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 02:15:36,533 INFO L175 Difference]: Start difference. First operand has 292 places, 425 transitions, 5751 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:15:36,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 441 transitions, 6701 flow [2024-06-28 02:15:37,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 441 transitions, 6414 flow, removed 114 selfloop flow, removed 2 redundant places. [2024-06-28 02:15:37,562 INFO L231 Difference]: Finished difference. Result has 298 places, 425 transitions, 5571 flow [2024-06-28 02:15:37,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5464, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5571, PETRI_PLACES=298, PETRI_TRANSITIONS=425} [2024-06-28 02:15:37,563 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-06-28 02:15:37,563 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 425 transitions, 5571 flow [2024-06-28 02:15:37,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:37,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:37,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:15:37,563 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:37,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1268408058, now seen corresponding path program 13 times [2024-06-28 02:15:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:37,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367549222] [2024-06-28 02:15:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:38,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367549222] [2024-06-28 02:15:38,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367549222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:38,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240279156] [2024-06-28 02:15:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:38,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:38,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:38,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 425 transitions, 5571 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:38,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:38,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:38,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:40,226 INFO L124 PetriNetUnfolderBase]: 5728/9938 cut-off events. [2024-06-28 02:15:40,226 INFO L125 PetriNetUnfolderBase]: For 395385/395385 co-relation queries the response was YES. [2024-06-28 02:15:40,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64265 conditions, 9938 events. 5728/9938 cut-off events. For 395385/395385 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 73301 event pairs, 1756 based on Foata normal form. 4/9515 useless extension candidates. Maximal degree in co-relation 64131. Up to 7546 conditions per place. [2024-06-28 02:15:40,345 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 283 selfloop transitions, 150 changer transitions 0/446 dead transitions. [2024-06-28 02:15:40,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 446 transitions, 6878 flow [2024-06-28 02:15:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:15:40,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 02:15:40,346 INFO L175 Difference]: Start difference. First operand has 298 places, 425 transitions, 5571 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:15:40,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 446 transitions, 6878 flow [2024-06-28 02:15:41,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 446 transitions, 6595 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:15:41,532 INFO L231 Difference]: Finished difference. Result has 298 places, 425 transitions, 5596 flow [2024-06-28 02:15:41,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5288, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5596, PETRI_PLACES=298, PETRI_TRANSITIONS=425} [2024-06-28 02:15:41,534 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-06-28 02:15:41,534 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 425 transitions, 5596 flow [2024-06-28 02:15:41,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:41,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:41,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:15:41,535 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:41,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash 910505318, now seen corresponding path program 4 times [2024-06-28 02:15:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:41,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113845451] [2024-06-28 02:15:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:41,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113845451] [2024-06-28 02:15:42,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113845451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:42,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:42,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:15:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613235579] [2024-06-28 02:15:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:15:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:15:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:15:42,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:42,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 425 transitions, 5596 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:42,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:42,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:42,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:44,454 INFO L124 PetriNetUnfolderBase]: 5790/10049 cut-off events. [2024-06-28 02:15:44,454 INFO L125 PetriNetUnfolderBase]: For 406441/406441 co-relation queries the response was YES. [2024-06-28 02:15:44,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65275 conditions, 10049 events. 5790/10049 cut-off events. For 406441/406441 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 74278 event pairs, 1751 based on Foata normal form. 4/9628 useless extension candidates. Maximal degree in co-relation 65141. Up to 8366 conditions per place. [2024-06-28 02:15:44,570 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 385 selfloop transitions, 49 changer transitions 0/447 dead transitions. [2024-06-28 02:15:44,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 447 transitions, 6620 flow [2024-06-28 02:15:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:15:44,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 02:15:44,571 INFO L175 Difference]: Start difference. First operand has 298 places, 425 transitions, 5596 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:15:44,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 447 transitions, 6620 flow [2024-06-28 02:15:45,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 447 transitions, 6121 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:15:45,835 INFO L231 Difference]: Finished difference. Result has 296 places, 428 transitions, 5279 flow [2024-06-28 02:15:45,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5097, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5279, PETRI_PLACES=296, PETRI_TRANSITIONS=428} [2024-06-28 02:15:45,836 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-28 02:15:45,836 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 428 transitions, 5279 flow [2024-06-28 02:15:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:45,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:45,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:45,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:15:45,837 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:45,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 51580686, now seen corresponding path program 2 times [2024-06-28 02:15:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942688381] [2024-06-28 02:15:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942688381] [2024-06-28 02:15:46,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942688381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:46,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853237903] [2024-06-28 02:15:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:46,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:46,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:46,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 428 transitions, 5279 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:46,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:46,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:46,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:48,437 INFO L124 PetriNetUnfolderBase]: 5799/10068 cut-off events. [2024-06-28 02:15:48,437 INFO L125 PetriNetUnfolderBase]: For 403171/403171 co-relation queries the response was YES. [2024-06-28 02:15:48,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64594 conditions, 10068 events. 5799/10068 cut-off events. For 403171/403171 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 74283 event pairs, 1735 based on Foata normal form. 1/9644 useless extension candidates. Maximal degree in co-relation 64463. Up to 8403 conditions per place. [2024-06-28 02:15:48,778 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 391 selfloop transitions, 55 changer transitions 0/459 dead transitions. [2024-06-28 02:15:48,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 459 transitions, 6371 flow [2024-06-28 02:15:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:15:48,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-28 02:15:48,779 INFO L175 Difference]: Start difference. First operand has 296 places, 428 transitions, 5279 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:15:48,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 459 transitions, 6371 flow [2024-06-28 02:15:50,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 459 transitions, 6211 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:50,086 INFO L231 Difference]: Finished difference. Result has 298 places, 431 transitions, 5295 flow [2024-06-28 02:15:50,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5119, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5295, PETRI_PLACES=298, PETRI_TRANSITIONS=431} [2024-06-28 02:15:50,087 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-06-28 02:15:50,087 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 431 transitions, 5295 flow [2024-06-28 02:15:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:50,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:50,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:50,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:15:50,087 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:50,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash -726431898, now seen corresponding path program 3 times [2024-06-28 02:15:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:50,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426053231] [2024-06-28 02:15:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:50,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426053231] [2024-06-28 02:15:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426053231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326760525] [2024-06-28 02:15:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:50,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:50,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 431 transitions, 5295 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:50,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:50,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:50,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:52,827 INFO L124 PetriNetUnfolderBase]: 5808/10084 cut-off events. [2024-06-28 02:15:52,827 INFO L125 PetriNetUnfolderBase]: For 406625/406625 co-relation queries the response was YES. [2024-06-28 02:15:52,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64204 conditions, 10084 events. 5808/10084 cut-off events. For 406625/406625 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 74498 event pairs, 1737 based on Foata normal form. 1/9659 useless extension candidates. Maximal degree in co-relation 64072. Up to 8415 conditions per place. [2024-06-28 02:15:52,962 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 385 selfloop transitions, 61 changer transitions 0/459 dead transitions. [2024-06-28 02:15:52,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 459 transitions, 6367 flow [2024-06-28 02:15:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:15:52,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:15:52,963 INFO L175 Difference]: Start difference. First operand has 298 places, 431 transitions, 5295 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:15:52,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 459 transitions, 6367 flow [2024-06-28 02:15:54,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 459 transitions, 6227 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:54,445 INFO L231 Difference]: Finished difference. Result has 300 places, 434 transitions, 5349 flow [2024-06-28 02:15:54,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5349, PETRI_PLACES=300, PETRI_TRANSITIONS=434} [2024-06-28 02:15:54,445 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 246 predicate places. [2024-06-28 02:15:54,445 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 434 transitions, 5349 flow [2024-06-28 02:15:54,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:54,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:54,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:54,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:15:54,446 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:54,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -713069658, now seen corresponding path program 4 times [2024-06-28 02:15:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:54,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450636429] [2024-06-28 02:15:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:55,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:55,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450636429] [2024-06-28 02:15:55,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450636429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:55,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:55,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:55,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046699714] [2024-06-28 02:15:55,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:55,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:55,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:55,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:55,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:55,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 434 transitions, 5349 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:55,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:55,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:55,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:57,321 INFO L124 PetriNetUnfolderBase]: 5800/10073 cut-off events. [2024-06-28 02:15:57,321 INFO L125 PetriNetUnfolderBase]: For 411303/411303 co-relation queries the response was YES. [2024-06-28 02:15:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64074 conditions, 10073 events. 5800/10073 cut-off events. For 411303/411303 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 74328 event pairs, 1737 based on Foata normal form. 2/9649 useless extension candidates. Maximal degree in co-relation 63941. Up to 8360 conditions per place. [2024-06-28 02:15:57,466 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 370 selfloop transitions, 73 changer transitions 0/456 dead transitions. [2024-06-28 02:15:57,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 456 transitions, 6341 flow [2024-06-28 02:15:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:15:57,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:15:57,467 INFO L175 Difference]: Start difference. First operand has 300 places, 434 transitions, 5349 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:15:57,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 456 transitions, 6341 flow [2024-06-28 02:15:58,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 456 transitions, 6159 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:58,733 INFO L231 Difference]: Finished difference. Result has 302 places, 434 transitions, 5321 flow [2024-06-28 02:15:58,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5321, PETRI_PLACES=302, PETRI_TRANSITIONS=434} [2024-06-28 02:15:58,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-28 02:15:58,733 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 434 transitions, 5321 flow [2024-06-28 02:15:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:58,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:58,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:58,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:15:58,734 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:58,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:58,734 INFO L85 PathProgramCache]: Analyzing trace with hash -395913498, now seen corresponding path program 2 times [2024-06-28 02:15:58,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:58,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768765123] [2024-06-28 02:15:58,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:58,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768765123] [2024-06-28 02:15:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768765123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:59,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:15:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139263029] [2024-06-28 02:15:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:59,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:15:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:15:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:15:59,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:15:59,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 434 transitions, 5321 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:59,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:59,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:15:59,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:01,356 INFO L124 PetriNetUnfolderBase]: 5809/10085 cut-off events. [2024-06-28 02:16:01,356 INFO L125 PetriNetUnfolderBase]: For 415735/415735 co-relation queries the response was YES. [2024-06-28 02:16:01,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64254 conditions, 10085 events. 5809/10085 cut-off events. For 415735/415735 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 74404 event pairs, 1737 based on Foata normal form. 1/9659 useless extension candidates. Maximal degree in co-relation 64120. Up to 8403 conditions per place. [2024-06-28 02:16:01,485 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 376 selfloop transitions, 67 changer transitions 0/456 dead transitions. [2024-06-28 02:16:01,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 456 transitions, 6375 flow [2024-06-28 02:16:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:16:01,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:16:01,486 INFO L175 Difference]: Start difference. First operand has 302 places, 434 transitions, 5321 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:16:01,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 456 transitions, 6375 flow [2024-06-28 02:16:02,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 456 transitions, 6193 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:16:02,968 INFO L231 Difference]: Finished difference. Result has 303 places, 437 transitions, 5361 flow [2024-06-28 02:16:02,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5361, PETRI_PLACES=303, PETRI_TRANSITIONS=437} [2024-06-28 02:16:02,968 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 249 predicate places. [2024-06-28 02:16:02,968 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 437 transitions, 5361 flow [2024-06-28 02:16:02,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:02,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:02,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:02,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:16:02,969 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:02,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1421345992, now seen corresponding path program 3 times [2024-06-28 02:16:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:02,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680256926] [2024-06-28 02:16:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680256926] [2024-06-28 02:16:03,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680256926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:03,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:03,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:03,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134217135] [2024-06-28 02:16:03,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:03,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:03,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:03,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:03,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 437 transitions, 5361 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:03,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:03,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:03,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:05,682 INFO L124 PetriNetUnfolderBase]: 5818/10092 cut-off events. [2024-06-28 02:16:05,682 INFO L125 PetriNetUnfolderBase]: For 428677/428677 co-relation queries the response was YES. [2024-06-28 02:16:05,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64864 conditions, 10092 events. 5818/10092 cut-off events. For 428677/428677 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 74420 event pairs, 1748 based on Foata normal form. 1/9661 useless extension candidates. Maximal degree in co-relation 64729. Up to 8324 conditions per place. [2024-06-28 02:16:05,835 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 363 selfloop transitions, 83 changer transitions 0/459 dead transitions. [2024-06-28 02:16:05,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 459 transitions, 6436 flow [2024-06-28 02:16:05,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:05,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:16:05,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:16:05,836 INFO L175 Difference]: Start difference. First operand has 303 places, 437 transitions, 5361 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:16:05,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 459 transitions, 6436 flow [2024-06-28 02:16:07,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 459 transitions, 6240 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 02:16:07,486 INFO L231 Difference]: Finished difference. Result has 306 places, 442 transitions, 5461 flow [2024-06-28 02:16:07,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5461, PETRI_PLACES=306, PETRI_TRANSITIONS=442} [2024-06-28 02:16:07,486 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 252 predicate places. [2024-06-28 02:16:07,486 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 442 transitions, 5461 flow [2024-06-28 02:16:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:07,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:07,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:07,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:16:07,487 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:07,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1252203738, now seen corresponding path program 4 times [2024-06-28 02:16:07,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:07,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981806991] [2024-06-28 02:16:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:08,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981806991] [2024-06-28 02:16:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981806991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:08,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:08,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:16:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069099078] [2024-06-28 02:16:08,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:08,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:16:08,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:16:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:16:08,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:08,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 442 transitions, 5461 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:08,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:08,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:08,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:10,185 INFO L124 PetriNetUnfolderBase]: 5839/10135 cut-off events. [2024-06-28 02:16:10,186 INFO L125 PetriNetUnfolderBase]: For 445848/445848 co-relation queries the response was YES. [2024-06-28 02:16:10,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65930 conditions, 10135 events. 5839/10135 cut-off events. For 445848/445848 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 74846 event pairs, 1758 based on Foata normal form. 1/9703 useless extension candidates. Maximal degree in co-relation 65793. Up to 8318 conditions per place. [2024-06-28 02:16:10,310 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 360 selfloop transitions, 93 changer transitions 0/466 dead transitions. [2024-06-28 02:16:10,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 466 transitions, 6789 flow [2024-06-28 02:16:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:10,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:16:10,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 02:16:10,311 INFO L175 Difference]: Start difference. First operand has 306 places, 442 transitions, 5461 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:16:10,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 466 transitions, 6789 flow [2024-06-28 02:16:11,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 466 transitions, 6581 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 02:16:11,660 INFO L231 Difference]: Finished difference. Result has 310 places, 448 transitions, 5628 flow [2024-06-28 02:16:11,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5253, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5628, PETRI_PLACES=310, PETRI_TRANSITIONS=448} [2024-06-28 02:16:11,660 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 256 predicate places. [2024-06-28 02:16:11,660 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 448 transitions, 5628 flow [2024-06-28 02:16:11,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:11,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:11,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:11,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:16:11,661 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:11,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:11,661 INFO L85 PathProgramCache]: Analyzing trace with hash -690343130, now seen corresponding path program 5 times [2024-06-28 02:16:11,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:11,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131103425] [2024-06-28 02:16:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131103425] [2024-06-28 02:16:12,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131103425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:12,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:12,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:12,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867573748] [2024-06-28 02:16:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:12,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:12,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:12,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:12,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:12,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:12,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 448 transitions, 5628 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:12,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:12,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:14,486 INFO L124 PetriNetUnfolderBase]: 5848/10141 cut-off events. [2024-06-28 02:16:14,486 INFO L125 PetriNetUnfolderBase]: For 460631/460631 co-relation queries the response was YES. [2024-06-28 02:16:14,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66632 conditions, 10141 events. 5848/10141 cut-off events. For 460631/460631 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 74881 event pairs, 1734 based on Foata normal form. 1/9707 useless extension candidates. Maximal degree in co-relation 66494. Up to 8266 conditions per place. [2024-06-28 02:16:14,601 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 352 selfloop transitions, 113 changer transitions 0/478 dead transitions. [2024-06-28 02:16:14,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 478 transitions, 7226 flow [2024-06-28 02:16:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:16:14,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 02:16:14,602 INFO L175 Difference]: Start difference. First operand has 310 places, 448 transitions, 5628 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:16:14,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 478 transitions, 7226 flow [2024-06-28 02:16:15,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 478 transitions, 7034 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 02:16:15,871 INFO L231 Difference]: Finished difference. Result has 315 places, 459 transitions, 5980 flow [2024-06-28 02:16:15,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5436, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5980, PETRI_PLACES=315, PETRI_TRANSITIONS=459} [2024-06-28 02:16:15,871 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 261 predicate places. [2024-06-28 02:16:15,871 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 459 transitions, 5980 flow [2024-06-28 02:16:15,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:15,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:15,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:16:15,872 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:15,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1211230550, now seen corresponding path program 6 times [2024-06-28 02:16:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404723617] [2024-06-28 02:16:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:16,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:16,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404723617] [2024-06-28 02:16:16,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404723617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:16,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:16,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:16,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679797170] [2024-06-28 02:16:16,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:16,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:16,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:16,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:16,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 459 transitions, 5980 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:16,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:16,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:16,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:18,602 INFO L124 PetriNetUnfolderBase]: 5845/10143 cut-off events. [2024-06-28 02:16:18,602 INFO L125 PetriNetUnfolderBase]: For 470449/470449 co-relation queries the response was YES. [2024-06-28 02:16:18,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67473 conditions, 10143 events. 5845/10143 cut-off events. For 470449/470449 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 74885 event pairs, 1744 based on Foata normal form. 1/9710 useless extension candidates. Maximal degree in co-relation 67332. Up to 8360 conditions per place. [2024-06-28 02:16:18,746 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 377 selfloop transitions, 87 changer transitions 0/477 dead transitions. [2024-06-28 02:16:18,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 477 transitions, 7006 flow [2024-06-28 02:16:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:16:18,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:16:18,747 INFO L175 Difference]: Start difference. First operand has 315 places, 459 transitions, 5980 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:16:18,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 477 transitions, 7006 flow [2024-06-28 02:16:20,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 477 transitions, 6741 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-28 02:16:20,598 INFO L231 Difference]: Finished difference. Result has 320 places, 460 transitions, 5907 flow [2024-06-28 02:16:20,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5716, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5907, PETRI_PLACES=320, PETRI_TRANSITIONS=460} [2024-06-28 02:16:20,599 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-06-28 02:16:20,599 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 460 transitions, 5907 flow [2024-06-28 02:16:20,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:20,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:20,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:20,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:16:20,599 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:20,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1992268520, now seen corresponding path program 7 times [2024-06-28 02:16:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:20,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779052196] [2024-06-28 02:16:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:20,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:21,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:21,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779052196] [2024-06-28 02:16:21,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779052196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:21,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914500210] [2024-06-28 02:16:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:21,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:21,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:21,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:21,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:21,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 460 transitions, 5907 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:21,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:21,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:21,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:23,259 INFO L124 PetriNetUnfolderBase]: 5854/10161 cut-off events. [2024-06-28 02:16:23,259 INFO L125 PetriNetUnfolderBase]: For 470200/470200 co-relation queries the response was YES. [2024-06-28 02:16:23,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67293 conditions, 10161 events. 5854/10161 cut-off events. For 470200/470200 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 74991 event pairs, 1744 based on Foata normal form. 1/9727 useless extension candidates. Maximal degree in co-relation 67150. Up to 8273 conditions per place. [2024-06-28 02:16:23,398 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 349 selfloop transitions, 120 changer transitions 0/482 dead transitions. [2024-06-28 02:16:23,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 482 transitions, 7192 flow [2024-06-28 02:16:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:16:23,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 02:16:23,399 INFO L175 Difference]: Start difference. First operand has 320 places, 460 transitions, 5907 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:16:23,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 482 transitions, 7192 flow [2024-06-28 02:16:25,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 482 transitions, 7033 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:16:25,285 INFO L231 Difference]: Finished difference. Result has 323 places, 464 transitions, 6089 flow [2024-06-28 02:16:25,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5748, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6089, PETRI_PLACES=323, PETRI_TRANSITIONS=464} [2024-06-28 02:16:25,285 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 269 predicate places. [2024-06-28 02:16:25,285 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 464 transitions, 6089 flow [2024-06-28 02:16:25,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:25,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:25,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:25,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:16:25,285 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:25,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1210904120, now seen corresponding path program 8 times [2024-06-28 02:16:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:25,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215893962] [2024-06-28 02:16:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:25,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:26,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:26,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215893962] [2024-06-28 02:16:26,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215893962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:26,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:26,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:26,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6783500] [2024-06-28 02:16:26,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:26,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:26,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:26,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:26,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 464 transitions, 6089 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:26,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:26,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:26,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:27,961 INFO L124 PetriNetUnfolderBase]: 5851/10154 cut-off events. [2024-06-28 02:16:27,961 INFO L125 PetriNetUnfolderBase]: For 475474/475474 co-relation queries the response was YES. [2024-06-28 02:16:28,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67430 conditions, 10154 events. 5851/10154 cut-off events. For 475474/475474 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 74953 event pairs, 1744 based on Foata normal form. 1/9720 useless extension candidates. Maximal degree in co-relation 67286. Up to 8348 conditions per place. [2024-06-28 02:16:28,117 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 370 selfloop transitions, 98 changer transitions 0/481 dead transitions. [2024-06-28 02:16:28,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 481 transitions, 7111 flow [2024-06-28 02:16:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:16:28,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:16:28,118 INFO L175 Difference]: Start difference. First operand has 323 places, 464 transitions, 6089 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:16:28,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 481 transitions, 7111 flow [2024-06-28 02:16:29,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 481 transitions, 6811 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-28 02:16:29,996 INFO L231 Difference]: Finished difference. Result has 327 places, 464 transitions, 5991 flow [2024-06-28 02:16:29,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5991, PETRI_PLACES=327, PETRI_TRANSITIONS=464} [2024-06-28 02:16:29,996 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 273 predicate places. [2024-06-28 02:16:29,996 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 464 transitions, 5991 flow [2024-06-28 02:16:29,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:29,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:29,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:29,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:16:29,997 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:29,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash -832361336, now seen corresponding path program 5 times [2024-06-28 02:16:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:29,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417788381] [2024-06-28 02:16:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:30,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417788381] [2024-06-28 02:16:30,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417788381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:30,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:30,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214656625] [2024-06-28 02:16:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:30,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:30,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:30,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:30,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:30,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:30,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 464 transitions, 5991 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:30,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:30,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:32,638 INFO L124 PetriNetUnfolderBase]: 5999/10338 cut-off events. [2024-06-28 02:16:32,638 INFO L125 PetriNetUnfolderBase]: For 488349/488349 co-relation queries the response was YES. [2024-06-28 02:16:32,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68559 conditions, 10338 events. 5999/10338 cut-off events. For 488349/488349 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 76033 event pairs, 1660 based on Foata normal form. 2/9931 useless extension candidates. Maximal degree in co-relation 68414. Up to 8690 conditions per place. [2024-06-28 02:16:32,778 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 459 selfloop transitions, 46 changer transitions 0/518 dead transitions. [2024-06-28 02:16:32,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 518 transitions, 7361 flow [2024-06-28 02:16:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:16:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:16:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 02:16:32,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:16:32,779 INFO L175 Difference]: Start difference. First operand has 327 places, 464 transitions, 5991 flow. Second operand 9 states and 225 transitions. [2024-06-28 02:16:32,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 518 transitions, 7361 flow [2024-06-28 02:16:34,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 518 transitions, 7115 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:16:34,911 INFO L231 Difference]: Finished difference. Result has 330 places, 480 transitions, 6073 flow [2024-06-28 02:16:34,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6073, PETRI_PLACES=330, PETRI_TRANSITIONS=480} [2024-06-28 02:16:34,911 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 276 predicate places. [2024-06-28 02:16:34,911 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 480 transitions, 6073 flow [2024-06-28 02:16:34,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:34,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:34,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:34,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:16:34,912 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:34,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash -719156954, now seen corresponding path program 6 times [2024-06-28 02:16:34,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:34,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433198865] [2024-06-28 02:16:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:34,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:35,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:35,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433198865] [2024-06-28 02:16:35,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433198865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:35,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:35,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:16:35,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324206105] [2024-06-28 02:16:35,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:35,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:16:35,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:35,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:16:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:16:35,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:35,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 480 transitions, 6073 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:35,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:35,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:35,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:37,581 INFO L124 PetriNetUnfolderBase]: 6219/10699 cut-off events. [2024-06-28 02:16:37,581 INFO L125 PetriNetUnfolderBase]: For 505778/505778 co-relation queries the response was YES. [2024-06-28 02:16:37,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71371 conditions, 10699 events. 6219/10699 cut-off events. For 505778/505778 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 78866 event pairs, 1682 based on Foata normal form. 2/10280 useless extension candidates. Maximal degree in co-relation 71224. Up to 8938 conditions per place. [2024-06-28 02:16:37,718 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 471 selfloop transitions, 63 changer transitions 0/547 dead transitions. [2024-06-28 02:16:37,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 547 transitions, 7695 flow [2024-06-28 02:16:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:16:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:16:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 02:16:37,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:16:37,719 INFO L175 Difference]: Start difference. First operand has 330 places, 480 transitions, 6073 flow. Second operand 9 states and 225 transitions. [2024-06-28 02:16:37,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 547 transitions, 7695 flow [2024-06-28 02:16:40,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 547 transitions, 7495 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-28 02:16:40,139 INFO L231 Difference]: Finished difference. Result has 336 places, 508 transitions, 6482 flow [2024-06-28 02:16:40,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5945, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6482, PETRI_PLACES=336, PETRI_TRANSITIONS=508} [2024-06-28 02:16:40,139 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 282 predicate places. [2024-06-28 02:16:40,140 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 508 transitions, 6482 flow [2024-06-28 02:16:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:40,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:40,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:40,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:16:40,140 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:40,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1238732906, now seen corresponding path program 7 times [2024-06-28 02:16:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789684543] [2024-06-28 02:16:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:40,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:40,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789684543] [2024-06-28 02:16:40,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789684543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:40,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:40,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:16:40,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291993335] [2024-06-28 02:16:40,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:40,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:16:40,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:16:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:16:40,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:40,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 508 transitions, 6482 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:40,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:40,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:40,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:42,979 INFO L124 PetriNetUnfolderBase]: 6459/11089 cut-off events. [2024-06-28 02:16:42,980 INFO L125 PetriNetUnfolderBase]: For 513362/513362 co-relation queries the response was YES. [2024-06-28 02:16:43,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74250 conditions, 11089 events. 6459/11089 cut-off events. For 513362/513362 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 81913 event pairs, 1558 based on Foata normal form. 2/10656 useless extension candidates. Maximal degree in co-relation 74100. Up to 9080 conditions per place. [2024-06-28 02:16:43,120 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 475 selfloop transitions, 97 changer transitions 0/585 dead transitions. [2024-06-28 02:16:43,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 585 transitions, 8294 flow [2024-06-28 02:16:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:16:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:16:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 02:16:43,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-28 02:16:43,121 INFO L175 Difference]: Start difference. First operand has 336 places, 508 transitions, 6482 flow. Second operand 9 states and 226 transitions. [2024-06-28 02:16:43,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 585 transitions, 8294 flow [2024-06-28 02:16:44,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 585 transitions, 8068 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-28 02:16:44,399 INFO L231 Difference]: Finished difference. Result has 341 places, 545 transitions, 7047 flow [2024-06-28 02:16:44,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7047, PETRI_PLACES=341, PETRI_TRANSITIONS=545} [2024-06-28 02:16:44,400 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 287 predicate places. [2024-06-28 02:16:44,400 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 545 transitions, 7047 flow [2024-06-28 02:16:44,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:44,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:44,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:44,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:16:44,401 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:44,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1151844076, now seen corresponding path program 1 times [2024-06-28 02:16:44,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:44,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976230958] [2024-06-28 02:16:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:44,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:45,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976230958] [2024-06-28 02:16:45,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976230958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:45,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:16:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317401928] [2024-06-28 02:16:45,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:45,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:16:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:16:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:16:45,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:45,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 545 transitions, 7047 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:45,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:45,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:45,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:47,390 INFO L124 PetriNetUnfolderBase]: 6490/11164 cut-off events. [2024-06-28 02:16:47,391 INFO L125 PetriNetUnfolderBase]: For 529863/529863 co-relation queries the response was YES. [2024-06-28 02:16:47,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76237 conditions, 11164 events. 6490/11164 cut-off events. For 529863/529863 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 82844 event pairs, 1750 based on Foata normal form. 2/10729 useless extension candidates. Maximal degree in co-relation 76085. Up to 9493 conditions per place. [2024-06-28 02:16:47,522 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 548 selfloop transitions, 20 changer transitions 0/581 dead transitions. [2024-06-28 02:16:47,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 581 transitions, 8471 flow [2024-06-28 02:16:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:16:47,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 02:16:47,523 INFO L175 Difference]: Start difference. First operand has 341 places, 545 transitions, 7047 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:16:47,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 581 transitions, 8471 flow [2024-06-28 02:16:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 581 transitions, 8277 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 02:16:48,972 INFO L231 Difference]: Finished difference. Result has 344 places, 550 transitions, 7020 flow [2024-06-28 02:16:48,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6853, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7020, PETRI_PLACES=344, PETRI_TRANSITIONS=550} [2024-06-28 02:16:48,973 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 290 predicate places. [2024-06-28 02:16:48,973 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 550 transitions, 7020 flow [2024-06-28 02:16:48,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:48,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:48,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:48,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:16:48,973 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:48,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:48,974 INFO L85 PathProgramCache]: Analyzing trace with hash -715884086, now seen corresponding path program 2 times [2024-06-28 02:16:48,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:48,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381853388] [2024-06-28 02:16:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:48,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:49,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:49,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381853388] [2024-06-28 02:16:49,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381853388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:49,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:49,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:16:49,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330757656] [2024-06-28 02:16:49,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:49,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:16:49,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:49,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:16:49,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:16:49,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:49,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 550 transitions, 7020 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:49,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:49,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:49,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:52,086 INFO L124 PetriNetUnfolderBase]: 6521/11222 cut-off events. [2024-06-28 02:16:52,086 INFO L125 PetriNetUnfolderBase]: For 544934/544934 co-relation queries the response was YES. [2024-06-28 02:16:52,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76862 conditions, 11222 events. 6521/11222 cut-off events. For 544934/544934 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 83434 event pairs, 1846 based on Foata normal form. 2/10785 useless extension candidates. Maximal degree in co-relation 76709. Up to 9566 conditions per place. [2024-06-28 02:16:52,224 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 545 selfloop transitions, 20 changer transitions 0/578 dead transitions. [2024-06-28 02:16:52,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 578 transitions, 8398 flow [2024-06-28 02:16:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:16:52,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 02:16:52,225 INFO L175 Difference]: Start difference. First operand has 344 places, 550 transitions, 7020 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:16:52,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 578 transitions, 8398 flow [2024-06-28 02:16:54,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 578 transitions, 8273 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 02:16:54,064 INFO L231 Difference]: Finished difference. Result has 347 places, 552 transitions, 7036 flow [2024-06-28 02:16:54,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6895, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7036, PETRI_PLACES=347, PETRI_TRANSITIONS=552} [2024-06-28 02:16:54,064 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 293 predicate places. [2024-06-28 02:16:54,065 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 552 transitions, 7036 flow [2024-06-28 02:16:54,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:54,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:54,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:54,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:16:54,065 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:54,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash -713052794, now seen corresponding path program 1 times [2024-06-28 02:16:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834541645] [2024-06-28 02:16:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:54,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834541645] [2024-06-28 02:16:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834541645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:54,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:54,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:54,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051059725] [2024-06-28 02:16:54,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:55,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:16:55,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 552 transitions, 7036 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:55,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:55,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:16:55,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:57,298 INFO L124 PetriNetUnfolderBase]: 6541/11319 cut-off events. [2024-06-28 02:16:57,299 INFO L125 PetriNetUnfolderBase]: For 557350/557350 co-relation queries the response was YES. [2024-06-28 02:16:57,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77098 conditions, 11319 events. 6541/11319 cut-off events. For 557350/557350 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 84333 event pairs, 1888 based on Foata normal form. 2/10850 useless extension candidates. Maximal degree in co-relation 76944. Up to 9416 conditions per place. [2024-06-28 02:16:57,439 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 487 selfloop transitions, 80 changer transitions 0/580 dead transitions. [2024-06-28 02:16:57,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 580 transitions, 8470 flow [2024-06-28 02:16:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:16:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:16:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 02:16:57,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 02:16:57,440 INFO L175 Difference]: Start difference. First operand has 347 places, 552 transitions, 7036 flow. Second operand 9 states and 213 transitions. [2024-06-28 02:16:57,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 580 transitions, 8470 flow [2024-06-28 02:16:59,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 580 transitions, 8345 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 02:16:59,713 INFO L231 Difference]: Finished difference. Result has 350 places, 556 transitions, 7238 flow [2024-06-28 02:16:59,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6911, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7238, PETRI_PLACES=350, PETRI_TRANSITIONS=556} [2024-06-28 02:16:59,714 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 296 predicate places. [2024-06-28 02:16:59,714 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 556 transitions, 7238 flow [2024-06-28 02:16:59,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:59,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:59,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:16:59,715 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:59,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash -403529082, now seen corresponding path program 3 times [2024-06-28 02:16:59,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396618951] [2024-06-28 02:16:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:59,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:00,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396618951] [2024-06-28 02:17:00,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396618951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:00,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:00,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:17:00,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125283541] [2024-06-28 02:17:00,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:17:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:17:00,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:17:00,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:00,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 556 transitions, 7238 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:00,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:00,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:00,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:02,735 INFO L124 PetriNetUnfolderBase]: 6572/11305 cut-off events. [2024-06-28 02:17:02,735 INFO L125 PetriNetUnfolderBase]: For 572241/572241 co-relation queries the response was YES. [2024-06-28 02:17:02,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77862 conditions, 11305 events. 6572/11305 cut-off events. For 572241/572241 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 84006 event pairs, 1847 based on Foata normal form. 2/10861 useless extension candidates. Maximal degree in co-relation 77707. Up to 9644 conditions per place. [2024-06-28 02:17:02,878 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 549 selfloop transitions, 20 changer transitions 0/582 dead transitions. [2024-06-28 02:17:02,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 582 transitions, 8626 flow [2024-06-28 02:17:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:17:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:17:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 02:17:02,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 02:17:02,879 INFO L175 Difference]: Start difference. First operand has 350 places, 556 transitions, 7238 flow. Second operand 8 states and 186 transitions. [2024-06-28 02:17:02,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 582 transitions, 8626 flow [2024-06-28 02:17:04,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 582 transitions, 8335 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 02:17:04,683 INFO L231 Difference]: Finished difference. Result has 352 places, 559 transitions, 7115 flow [2024-06-28 02:17:04,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6947, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7115, PETRI_PLACES=352, PETRI_TRANSITIONS=559} [2024-06-28 02:17:04,684 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 298 predicate places. [2024-06-28 02:17:04,684 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 559 transitions, 7115 flow [2024-06-28 02:17:04,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:04,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:04,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:04,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:17:04,684 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:04,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1358651338, now seen corresponding path program 2 times [2024-06-28 02:17:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732700511] [2024-06-28 02:17:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732700511] [2024-06-28 02:17:05,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732700511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:05,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:05,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:05,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278670792] [2024-06-28 02:17:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:05,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:05,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 559 transitions, 7115 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:05,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:05,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:05,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:07,990 INFO L124 PetriNetUnfolderBase]: 6610/11432 cut-off events. [2024-06-28 02:17:07,990 INFO L125 PetriNetUnfolderBase]: For 587209/587209 co-relation queries the response was YES. [2024-06-28 02:17:08,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78362 conditions, 11432 events. 6610/11432 cut-off events. For 587209/587209 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 85146 event pairs, 1891 based on Foata normal form. 2/10954 useless extension candidates. Maximal degree in co-relation 78205. Up to 9486 conditions per place. [2024-06-28 02:17:08,143 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 483 selfloop transitions, 92 changer transitions 0/588 dead transitions. [2024-06-28 02:17:08,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 588 transitions, 8602 flow [2024-06-28 02:17:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:17:08,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 02:17:08,144 INFO L175 Difference]: Start difference. First operand has 352 places, 559 transitions, 7115 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:17:08,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 588 transitions, 8602 flow [2024-06-28 02:17:10,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 588 transitions, 8445 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 02:17:10,571 INFO L231 Difference]: Finished difference. Result has 355 places, 567 transitions, 7364 flow [2024-06-28 02:17:10,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6958, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7364, PETRI_PLACES=355, PETRI_TRANSITIONS=567} [2024-06-28 02:17:10,572 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 301 predicate places. [2024-06-28 02:17:10,572 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 567 transitions, 7364 flow [2024-06-28 02:17:10,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:10,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:10,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:10,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:17:10,572 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:10,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -395904570, now seen corresponding path program 3 times [2024-06-28 02:17:10,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:10,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152614259] [2024-06-28 02:17:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:10,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152614259] [2024-06-28 02:17:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152614259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:11,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:11,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:11,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513261859] [2024-06-28 02:17:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:11,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:11,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:11,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:11,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 567 transitions, 7364 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:11,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:11,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:11,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:13,768 INFO L124 PetriNetUnfolderBase]: 6656/11504 cut-off events. [2024-06-28 02:17:13,768 INFO L125 PetriNetUnfolderBase]: For 609557/609557 co-relation queries the response was YES. [2024-06-28 02:17:13,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79605 conditions, 11504 events. 6656/11504 cut-off events. For 609557/609557 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 85720 event pairs, 1901 based on Foata normal form. 2/11019 useless extension candidates. Maximal degree in co-relation 79448. Up to 9379 conditions per place. [2024-06-28 02:17:13,921 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 460 selfloop transitions, 125 changer transitions 0/598 dead transitions. [2024-06-28 02:17:13,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 598 transitions, 9202 flow [2024-06-28 02:17:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:17:13,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 02:17:13,922 INFO L175 Difference]: Start difference. First operand has 355 places, 567 transitions, 7364 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:17:13,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 598 transitions, 9202 flow [2024-06-28 02:17:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 598 transitions, 8873 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-28 02:17:16,488 INFO L231 Difference]: Finished difference. Result has 358 places, 575 transitions, 7640 flow [2024-06-28 02:17:16,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7035, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7640, PETRI_PLACES=358, PETRI_TRANSITIONS=575} [2024-06-28 02:17:16,489 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 304 predicate places. [2024-06-28 02:17:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 575 transitions, 7640 flow [2024-06-28 02:17:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:16,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:16,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:17:16,489 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash -403523130, now seen corresponding path program 4 times [2024-06-28 02:17:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360438976] [2024-06-28 02:17:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360438976] [2024-06-28 02:17:17,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360438976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:17,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:17,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558085096] [2024-06-28 02:17:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:17,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:17,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:17,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:17,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 575 transitions, 7640 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:17,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:17,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:17,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:19,780 INFO L124 PetriNetUnfolderBase]: 6650/11496 cut-off events. [2024-06-28 02:17:19,780 INFO L125 PetriNetUnfolderBase]: For 613135/613135 co-relation queries the response was YES. [2024-06-28 02:17:19,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79532 conditions, 11496 events. 6650/11496 cut-off events. For 613135/613135 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 85656 event pairs, 1901 based on Foata normal form. 2/11011 useless extension candidates. Maximal degree in co-relation 79374. Up to 9538 conditions per place. [2024-06-28 02:17:19,943 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 496 selfloop transitions, 87 changer transitions 0/596 dead transitions. [2024-06-28 02:17:19,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 596 transitions, 8936 flow [2024-06-28 02:17:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:17:19,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 02:17:19,944 INFO L175 Difference]: Start difference. First operand has 358 places, 575 transitions, 7640 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:17:19,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 596 transitions, 8936 flow [2024-06-28 02:17:22,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 596 transitions, 8509 flow, removed 140 selfloop flow, removed 5 redundant places. [2024-06-28 02:17:22,648 INFO L231 Difference]: Finished difference. Result has 362 places, 575 transitions, 7394 flow [2024-06-28 02:17:22,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7213, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7394, PETRI_PLACES=362, PETRI_TRANSITIONS=575} [2024-06-28 02:17:22,649 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 308 predicate places. [2024-06-28 02:17:22,649 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 575 transitions, 7394 flow [2024-06-28 02:17:22,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:22,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:22,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:22,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:17:22,649 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:22,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1495633848, now seen corresponding path program 4 times [2024-06-28 02:17:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:22,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401813101] [2024-06-28 02:17:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:23,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:23,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401813101] [2024-06-28 02:17:23,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401813101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:23,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:23,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:17:23,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091828624] [2024-06-28 02:17:23,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:23,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:17:23,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:17:23,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:17:23,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:23,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 575 transitions, 7394 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:23,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:23,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:23,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:25,707 INFO L124 PetriNetUnfolderBase]: 6653/11409 cut-off events. [2024-06-28 02:17:25,707 INFO L125 PetriNetUnfolderBase]: For 609557/609557 co-relation queries the response was YES. [2024-06-28 02:17:25,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79049 conditions, 11409 events. 6653/11409 cut-off events. For 609557/609557 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 84601 event pairs, 1857 based on Foata normal form. 2/10956 useless extension candidates. Maximal degree in co-relation 78889. Up to 9736 conditions per place. [2024-06-28 02:17:25,868 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 559 selfloop transitions, 27 changer transitions 0/599 dead transitions. [2024-06-28 02:17:25,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 599 transitions, 8816 flow [2024-06-28 02:17:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:17:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:17:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 02:17:25,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 02:17:25,869 INFO L175 Difference]: Start difference. First operand has 362 places, 575 transitions, 7394 flow. Second operand 8 states and 186 transitions. [2024-06-28 02:17:25,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 599 transitions, 8816 flow [2024-06-28 02:17:28,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 599 transitions, 8549 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:17:28,288 INFO L231 Difference]: Finished difference. Result has 362 places, 578 transitions, 7314 flow [2024-06-28 02:17:28,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=353, 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=7314, PETRI_PLACES=362, PETRI_TRANSITIONS=578} [2024-06-28 02:17:28,288 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 308 predicate places. [2024-06-28 02:17:28,288 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 578 transitions, 7314 flow [2024-06-28 02:17:28,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:28,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:28,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:28,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:17:28,289 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:28,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1252461720, now seen corresponding path program 5 times [2024-06-28 02:17:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:28,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816726964] [2024-06-28 02:17:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:28,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:29,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816726964] [2024-06-28 02:17:29,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816726964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:29,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:29,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:29,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201509422] [2024-06-28 02:17:29,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:29,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:29,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:29,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:29,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 578 transitions, 7314 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:29,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:29,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:29,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:31,492 INFO L124 PetriNetUnfolderBase]: 6691/11471 cut-off events. [2024-06-28 02:17:31,493 INFO L125 PetriNetUnfolderBase]: For 625575/625575 co-relation queries the response was YES. [2024-06-28 02:17:31,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79568 conditions, 11471 events. 6691/11471 cut-off events. For 625575/625575 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 84960 event pairs, 1906 based on Foata normal form. 2/10993 useless extension candidates. Maximal degree in co-relation 79408. Up to 9409 conditions per place. [2024-06-28 02:17:31,654 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 471 selfloop transitions, 121 changer transitions 0/605 dead transitions. [2024-06-28 02:17:31,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 605 transitions, 8841 flow [2024-06-28 02:17:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 02:17:31,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 02:17:31,655 INFO L175 Difference]: Start difference. First operand has 362 places, 578 transitions, 7314 flow. Second operand 9 states and 213 transitions. [2024-06-28 02:17:31,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 605 transitions, 8841 flow [2024-06-28 02:17:34,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 605 transitions, 8665 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 02:17:34,612 INFO L231 Difference]: Finished difference. Result has 365 places, 586 transitions, 7614 flow [2024-06-28 02:17:34,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7138, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7614, PETRI_PLACES=365, PETRI_TRANSITIONS=586} [2024-06-28 02:17:34,613 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 311 predicate places. [2024-06-28 02:17:34,613 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 586 transitions, 7614 flow [2024-06-28 02:17:34,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:34,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:34,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:34,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:17:34,614 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:34,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:34,614 INFO L85 PathProgramCache]: Analyzing trace with hash -690334202, now seen corresponding path program 6 times [2024-06-28 02:17:34,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:34,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409832693] [2024-06-28 02:17:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:34,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:35,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409832693] [2024-06-28 02:17:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409832693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920692837] [2024-06-28 02:17:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:35,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:35,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:35,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:35,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 586 transitions, 7614 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:35,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:35,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:35,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:37,791 INFO L124 PetriNetUnfolderBase]: 6724/11515 cut-off events. [2024-06-28 02:17:37,791 INFO L125 PetriNetUnfolderBase]: For 641731/641731 co-relation queries the response was YES. [2024-06-28 02:17:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80518 conditions, 11515 events. 6724/11515 cut-off events. For 641731/641731 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 85217 event pairs, 1926 based on Foata normal form. 2/11031 useless extension candidates. Maximal degree in co-relation 80358. Up to 9197 conditions per place. [2024-06-28 02:17:37,954 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 405 selfloop transitions, 196 changer transitions 0/614 dead transitions. [2024-06-28 02:17:37,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 614 transitions, 9510 flow [2024-06-28 02:17:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:17:37,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:17:37,957 INFO L175 Difference]: Start difference. First operand has 365 places, 586 transitions, 7614 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:17:37,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 614 transitions, 9510 flow [2024-06-28 02:17:41,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 614 transitions, 9105 flow, removed 85 selfloop flow, removed 6 redundant places. [2024-06-28 02:17:41,694 INFO L231 Difference]: Finished difference. Result has 368 places, 594 transitions, 7992 flow [2024-06-28 02:17:41,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7209, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7992, PETRI_PLACES=368, PETRI_TRANSITIONS=594} [2024-06-28 02:17:41,695 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 314 predicate places. [2024-06-28 02:17:41,695 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 594 transitions, 7992 flow [2024-06-28 02:17:41,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:41,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:41,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:41,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:17:41,695 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:41,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:41,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1252194810, now seen corresponding path program 7 times [2024-06-28 02:17:41,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:41,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101617311] [2024-06-28 02:17:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:41,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101617311] [2024-06-28 02:17:42,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101617311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:42,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:42,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:42,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078577890] [2024-06-28 02:17:42,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:42,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:42,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:42,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:42,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:42,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:42,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 594 transitions, 7992 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:42,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:42,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:42,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:44,971 INFO L124 PetriNetUnfolderBase]: 6770/11581 cut-off events. [2024-06-28 02:17:44,971 INFO L125 PetriNetUnfolderBase]: For 674182/674182 co-relation queries the response was YES. [2024-06-28 02:17:45,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82279 conditions, 11581 events. 6770/11581 cut-off events. For 674182/674182 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 85650 event pairs, 1926 based on Foata normal form. 2/11089 useless extension candidates. Maximal degree in co-relation 82118. Up to 9355 conditions per place. [2024-06-28 02:17:45,138 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 465 selfloop transitions, 144 changer transitions 0/622 dead transitions. [2024-06-28 02:17:45,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 622 transitions, 9922 flow [2024-06-28 02:17:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:17:45,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:17:45,139 INFO L175 Difference]: Start difference. First operand has 368 places, 594 transitions, 7992 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:17:45,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 622 transitions, 9922 flow [2024-06-28 02:17:48,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 622 transitions, 9466 flow, removed 120 selfloop flow, removed 5 redundant places. [2024-06-28 02:17:48,988 INFO L231 Difference]: Finished difference. Result has 372 places, 602 transitions, 8231 flow [2024-06-28 02:17:48,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7576, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8231, PETRI_PLACES=372, PETRI_TRANSITIONS=602} [2024-06-28 02:17:48,989 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 318 predicate places. [2024-06-28 02:17:48,989 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 602 transitions, 8231 flow [2024-06-28 02:17:48,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:48,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:48,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:48,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:17:48,989 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:48,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:48,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1259813370, now seen corresponding path program 8 times [2024-06-28 02:17:48,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:48,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911932718] [2024-06-28 02:17:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:48,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:49,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:49,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911932718] [2024-06-28 02:17:49,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911932718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:49,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:49,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:49,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355018491] [2024-06-28 02:17:49,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:49,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:49,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:49,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:50,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:50,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 602 transitions, 8231 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:50,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:50,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:50,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:52,353 INFO L124 PetriNetUnfolderBase]: 6764/11581 cut-off events. [2024-06-28 02:17:52,353 INFO L125 PetriNetUnfolderBase]: For 660639/660639 co-relation queries the response was YES. [2024-06-28 02:17:52,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81670 conditions, 11581 events. 6764/11581 cut-off events. For 660639/660639 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 85667 event pairs, 1906 based on Foata normal form. 2/11089 useless extension candidates. Maximal degree in co-relation 81507. Up to 9504 conditions per place. [2024-06-28 02:17:52,519 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 488 selfloop transitions, 120 changer transitions 0/621 dead transitions. [2024-06-28 02:17:52,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 621 transitions, 9571 flow [2024-06-28 02:17:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:17:52,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 02:17:52,520 INFO L175 Difference]: Start difference. First operand has 372 places, 602 transitions, 8231 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:17:52,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 621 transitions, 9571 flow [2024-06-28 02:17:56,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 621 transitions, 9122 flow, removed 142 selfloop flow, removed 5 redundant places. [2024-06-28 02:17:56,298 INFO L231 Difference]: Finished difference. Result has 376 places, 602 transitions, 8029 flow [2024-06-28 02:17:56,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7782, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8029, PETRI_PLACES=376, PETRI_TRANSITIONS=602} [2024-06-28 02:17:56,298 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 322 predicate places. [2024-06-28 02:17:56,298 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 602 transitions, 8029 flow [2024-06-28 02:17:56,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:56,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:17:56,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:17:56,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:17:56,299 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:17:56,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:17:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1004033432, now seen corresponding path program 9 times [2024-06-28 02:17:56,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:17:56,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180319902] [2024-06-28 02:17:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:17:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:17:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:17:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:17:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:17:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180319902] [2024-06-28 02:17:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180319902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:17:57,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:17:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:17:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91808077] [2024-06-28 02:17:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:17:57,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:17:57,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:17:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:17:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:17:57,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:17:57,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 602 transitions, 8029 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:17:57,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:17:57,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:17:57,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:17:59,396 INFO L124 PetriNetUnfolderBase]: 6784/11599 cut-off events. [2024-06-28 02:17:59,397 INFO L125 PetriNetUnfolderBase]: For 664939/664939 co-relation queries the response was YES. [2024-06-28 02:17:59,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82015 conditions, 11599 events. 6784/11599 cut-off events. For 664939/664939 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 85716 event pairs, 1926 based on Foata normal form. 2/11103 useless extension candidates. Maximal degree in co-relation 81850. Up to 9383 conditions per place. [2024-06-28 02:17:59,560 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 449 selfloop transitions, 164 changer transitions 0/626 dead transitions. [2024-06-28 02:17:59,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 626 transitions, 9763 flow [2024-06-28 02:17:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:17:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:17:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:17:59,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:17:59,561 INFO L175 Difference]: Start difference. First operand has 376 places, 602 transitions, 8029 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:17:59,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 626 transitions, 9763 flow [2024-06-28 02:18:04,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 626 transitions, 9455 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:18:04,198 INFO L231 Difference]: Finished difference. Result has 376 places, 606 transitions, 8240 flow [2024-06-28 02:18:04,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7721, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8240, PETRI_PLACES=376, PETRI_TRANSITIONS=606} [2024-06-28 02:18:04,199 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 322 predicate places. [2024-06-28 02:18:04,199 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 606 transitions, 8240 flow [2024-06-28 02:18:04,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:04,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:04,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:18:04,199 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:04,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1684977548, now seen corresponding path program 10 times [2024-06-28 02:18:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:04,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56765551] [2024-06-28 02:18:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:04,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:18:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:05,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56765551] [2024-06-28 02:18:05,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56765551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:05,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:05,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:18:05,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863373247] [2024-06-28 02:18:05,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:05,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:18:05,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:18:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:18:05,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:05,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 606 transitions, 8240 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:05,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:05,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:05,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:07,752 INFO L124 PetriNetUnfolderBase]: 6778/11596 cut-off events. [2024-06-28 02:18:07,752 INFO L125 PetriNetUnfolderBase]: For 664291/664291 co-relation queries the response was YES. [2024-06-28 02:18:07,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81786 conditions, 11596 events. 6778/11596 cut-off events. For 664291/664291 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 85646 event pairs, 1906 based on Foata normal form. 2/11100 useless extension candidates. Maximal degree in co-relation 81622. Up to 9522 conditions per place. [2024-06-28 02:18:07,890 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 473 selfloop transitions, 139 changer transitions 0/625 dead transitions. [2024-06-28 02:18:07,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 625 transitions, 9588 flow [2024-06-28 02:18:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:18:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:18:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:18:07,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 02:18:07,891 INFO L175 Difference]: Start difference. First operand has 376 places, 606 transitions, 8240 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:18:07,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 625 transitions, 9588 flow [2024-06-28 02:18:11,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 625 transitions, 8727 flow, removed 154 selfloop flow, removed 9 redundant places. [2024-06-28 02:18:11,798 INFO L231 Difference]: Finished difference. Result has 376 places, 606 transitions, 7664 flow [2024-06-28 02:18:11,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7379, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7664, PETRI_PLACES=376, PETRI_TRANSITIONS=606} [2024-06-28 02:18:11,799 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 322 predicate places. [2024-06-28 02:18:11,799 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 606 transitions, 7664 flow [2024-06-28 02:18:11,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:11,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:11,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:11,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:18:11,799 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:11,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash 520686787, now seen corresponding path program 1 times [2024-06-28 02:18:11,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:11,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544304816] [2024-06-28 02:18:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:18:12,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:12,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544304816] [2024-06-28 02:18:12,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544304816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:12,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:12,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:18:12,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35618176] [2024-06-28 02:18:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:12,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:18:12,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:18:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:18:12,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:12,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 606 transitions, 7664 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:12,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:12,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:12,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:14,910 INFO L124 PetriNetUnfolderBase]: 6842/11697 cut-off events. [2024-06-28 02:18:14,910 INFO L125 PetriNetUnfolderBase]: For 667261/667261 co-relation queries the response was YES. [2024-06-28 02:18:15,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80867 conditions, 11697 events. 6842/11697 cut-off events. For 667261/667261 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 86547 event pairs, 1879 based on Foata normal form. 2/11196 useless extension candidates. Maximal degree in co-relation 80704. Up to 9914 conditions per place. [2024-06-28 02:18:15,058 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 579 selfloop transitions, 50 changer transitions 0/642 dead transitions. [2024-06-28 02:18:15,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 642 transitions, 9280 flow [2024-06-28 02:18:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:18:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:18:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 02:18:15,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-06-28 02:18:15,059 INFO L175 Difference]: Start difference. First operand has 376 places, 606 transitions, 7664 flow. Second operand 9 states and 209 transitions. [2024-06-28 02:18:15,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 642 transitions, 9280 flow [2024-06-28 02:18:18,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 642 transitions, 8975 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 02:18:18,972 INFO L231 Difference]: Finished difference. Result has 378 places, 618 transitions, 7678 flow [2024-06-28 02:18:18,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7359, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7678, PETRI_PLACES=378, PETRI_TRANSITIONS=618} [2024-06-28 02:18:18,972 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 324 predicate places. [2024-06-28 02:18:18,972 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 618 transitions, 7678 flow [2024-06-28 02:18:18,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:18,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:18,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:18,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:18:18,973 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:18,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash -413758879, now seen corresponding path program 2 times [2024-06-28 02:18:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832833288] [2024-06-28 02:18:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:18:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832833288] [2024-06-28 02:18:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832833288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:19,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:19,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:18:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317614876] [2024-06-28 02:18:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:18:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:18:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:18:19,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:19,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 618 transitions, 7678 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:19,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:19,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:22,006 INFO L124 PetriNetUnfolderBase]: 6920/11802 cut-off events. [2024-06-28 02:18:22,006 INFO L125 PetriNetUnfolderBase]: For 700738/700738 co-relation queries the response was YES. [2024-06-28 02:18:22,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82148 conditions, 11802 events. 6920/11802 cut-off events. For 700738/700738 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 87099 event pairs, 1877 based on Foata normal form. 2/11289 useless extension candidates. Maximal degree in co-relation 81983. Up to 9500 conditions per place. [2024-06-28 02:18:22,181 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 444 selfloop transitions, 196 changer transitions 0/653 dead transitions. [2024-06-28 02:18:22,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 653 transitions, 9605 flow [2024-06-28 02:18:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:18:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:18:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:18:22,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:18:22,181 INFO L175 Difference]: Start difference. First operand has 378 places, 618 transitions, 7678 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:18:22,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 653 transitions, 9605 flow [2024-06-28 02:18:26,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 653 transitions, 9505 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 02:18:26,197 INFO L231 Difference]: Finished difference. Result has 383 places, 630 transitions, 8304 flow [2024-06-28 02:18:26,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7578, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8304, PETRI_PLACES=383, PETRI_TRANSITIONS=630} [2024-06-28 02:18:26,197 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 329 predicate places. [2024-06-28 02:18:26,197 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 630 transitions, 8304 flow [2024-06-28 02:18:26,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:26,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:26,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:26,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:18:26,198 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:26,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1329864061, now seen corresponding path program 3 times [2024-06-28 02:18:26,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:26,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127716799] [2024-06-28 02:18:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:26,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:18:26,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127716799] [2024-06-28 02:18:26,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127716799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:26,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:26,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:18:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575363188] [2024-06-28 02:18:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:26,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:18:26,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:26,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:18:26,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:18:26,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:26,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 630 transitions, 8304 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:26,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:26,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:26,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:29,094 INFO L124 PetriNetUnfolderBase]: 6914/11797 cut-off events. [2024-06-28 02:18:29,094 INFO L125 PetriNetUnfolderBase]: For 703234/703234 co-relation queries the response was YES. [2024-06-28 02:18:29,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82830 conditions, 11797 events. 6914/11797 cut-off events. For 703234/703234 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 87083 event pairs, 1884 based on Foata normal form. 2/11284 useless extension candidates. Maximal degree in co-relation 82663. Up to 9495 conditions per place. [2024-06-28 02:18:29,258 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 464 selfloop transitions, 176 changer transitions 0/653 dead transitions. [2024-06-28 02:18:29,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 653 transitions, 9998 flow [2024-06-28 02:18:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:18:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:18:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:18:29,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:18:29,258 INFO L175 Difference]: Start difference. First operand has 383 places, 630 transitions, 8304 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:18:29,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 653 transitions, 9998 flow [2024-06-28 02:18:31,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 653 transitions, 9760 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:18:31,919 INFO L231 Difference]: Finished difference. Result has 387 places, 630 transitions, 8443 flow [2024-06-28 02:18:31,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8066, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8443, PETRI_PLACES=387, PETRI_TRANSITIONS=630} [2024-06-28 02:18:31,919 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 333 predicate places. [2024-06-28 02:18:31,919 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 630 transitions, 8443 flow [2024-06-28 02:18:31,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:31,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:31,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:31,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:18:31,920 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:31,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -120194833, now seen corresponding path program 4 times [2024-06-28 02:18:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:31,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018399437] [2024-06-28 02:18:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:18:32,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018399437] [2024-06-28 02:18:32,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018399437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:32,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:32,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:18:32,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131453172] [2024-06-28 02:18:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:32,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:18:32,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:32,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:18:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:18:32,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:32,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 630 transitions, 8443 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:32,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:32,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:32,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:34,886 INFO L124 PetriNetUnfolderBase]: 6933/11828 cut-off events. [2024-06-28 02:18:34,886 INFO L125 PetriNetUnfolderBase]: For 713791/713791 co-relation queries the response was YES. [2024-06-28 02:18:35,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83799 conditions, 11828 events. 6933/11828 cut-off events. For 713791/713791 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 87322 event pairs, 1884 based on Foata normal form. 2/11312 useless extension candidates. Maximal degree in co-relation 83630. Up to 9856 conditions per place. [2024-06-28 02:18:35,057 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 540 selfloop transitions, 103 changer transitions 0/656 dead transitions. [2024-06-28 02:18:35,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 656 transitions, 9988 flow [2024-06-28 02:18:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:18:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:18:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:18:35,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:18:35,058 INFO L175 Difference]: Start difference. First operand has 387 places, 630 transitions, 8443 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:18:35,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 656 transitions, 9988 flow [2024-06-28 02:18:39,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 656 transitions, 9709 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:18:39,778 INFO L231 Difference]: Finished difference. Result has 390 places, 633 transitions, 8461 flow [2024-06-28 02:18:39,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8164, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8461, PETRI_PLACES=390, PETRI_TRANSITIONS=633} [2024-06-28 02:18:39,779 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 336 predicate places. [2024-06-28 02:18:39,779 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 633 transitions, 8461 flow [2024-06-28 02:18:39,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:39,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:39,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:39,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:18:39,779 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:39,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 995222689, now seen corresponding path program 5 times [2024-06-28 02:18:39,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:39,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470344801] [2024-06-28 02:18:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:39,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:40,360 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 02:18:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:40,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470344801] [2024-06-28 02:18:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470344801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:40,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:40,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:18:40,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901390303] [2024-06-28 02:18:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:18:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:18:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:18:40,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:40,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 633 transitions, 8461 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:40,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:40,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:40,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:42,726 INFO L124 PetriNetUnfolderBase]: 6952/11850 cut-off events. [2024-06-28 02:18:42,726 INFO L125 PetriNetUnfolderBase]: For 725536/725536 co-relation queries the response was YES. [2024-06-28 02:18:42,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83943 conditions, 11850 events. 6952/11850 cut-off events. For 725536/725536 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 87585 event pairs, 1878 based on Foata normal form. 2/11331 useless extension candidates. Maximal degree in co-relation 83773. Up to 9568 conditions per place. [2024-06-28 02:18:42,894 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 490 selfloop transitions, 154 changer transitions 0/657 dead transitions. [2024-06-28 02:18:42,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 657 transitions, 10234 flow [2024-06-28 02:18:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:18:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:18:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:18:42,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:18:42,895 INFO L175 Difference]: Start difference. First operand has 390 places, 633 transitions, 8461 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:18:42,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 657 transitions, 10234 flow [2024-06-28 02:18:45,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 657 transitions, 9984 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:18:45,788 INFO L231 Difference]: Finished difference. Result has 392 places, 636 transitions, 8610 flow [2024-06-28 02:18:45,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8211, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8610, PETRI_PLACES=392, PETRI_TRANSITIONS=636} [2024-06-28 02:18:45,789 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 338 predicate places. [2024-06-28 02:18:45,789 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 636 transitions, 8610 flow [2024-06-28 02:18:45,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:45,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:45,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:45,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:18:45,789 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:45,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:45,789 INFO L85 PathProgramCache]: Analyzing trace with hash 994777219, now seen corresponding path program 6 times [2024-06-28 02:18:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836732423] [2024-06-28 02:18:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:45,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:18:46,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:46,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836732423] [2024-06-28 02:18:46,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836732423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:46,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:46,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:18:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505304264] [2024-06-28 02:18:46,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:46,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:18:46,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:18:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:18:46,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:46,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 636 transitions, 8610 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:46,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:46,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:46,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:48,809 INFO L124 PetriNetUnfolderBase]: 6946/11845 cut-off events. [2024-06-28 02:18:48,809 INFO L125 PetriNetUnfolderBase]: For 724378/724378 co-relation queries the response was YES. [2024-06-28 02:18:48,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83906 conditions, 11845 events. 6946/11845 cut-off events. For 724378/724378 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 87565 event pairs, 1888 based on Foata normal form. 2/11326 useless extension candidates. Maximal degree in co-relation 83735. Up to 9563 conditions per place. [2024-06-28 02:18:48,977 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 500 selfloop transitions, 144 changer transitions 0/657 dead transitions. [2024-06-28 02:18:48,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 657 transitions, 10302 flow [2024-06-28 02:18:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:18:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:18:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:18:48,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 02:18:48,978 INFO L175 Difference]: Start difference. First operand has 392 places, 636 transitions, 8610 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:18:48,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 657 transitions, 10302 flow [2024-06-28 02:18:52,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 657 transitions, 9915 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 02:18:52,655 INFO L231 Difference]: Finished difference. Result has 394 places, 636 transitions, 8519 flow [2024-06-28 02:18:52,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8223, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8519, PETRI_PLACES=394, PETRI_TRANSITIONS=636} [2024-06-28 02:18:52,656 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 340 predicate places. [2024-06-28 02:18:52,656 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 636 transitions, 8519 flow [2024-06-28 02:18:52,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:52,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:52,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:52,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:18:52,657 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:52,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1102604353, now seen corresponding path program 7 times [2024-06-28 02:18:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148418474] [2024-06-28 02:18:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:18:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:18:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:18:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:18:53,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:18:53,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148418474] [2024-06-28 02:18:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148418474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:18:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:18:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:18:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54124616] [2024-06-28 02:18:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:18:53,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:18:53,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:18:53,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:18:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:18:53,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:18:53,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 636 transitions, 8519 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:53,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:18:53,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:18:53,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:18:55,633 INFO L124 PetriNetUnfolderBase]: 6990/11913 cut-off events. [2024-06-28 02:18:55,633 INFO L125 PetriNetUnfolderBase]: For 745886/745886 co-relation queries the response was YES. [2024-06-28 02:18:55,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84691 conditions, 11913 events. 6990/11913 cut-off events. For 745886/745886 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 88181 event pairs, 1911 based on Foata normal form. 2/11383 useless extension candidates. Maximal degree in co-relation 84519. Up to 9163 conditions per place. [2024-06-28 02:18:55,811 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 418 selfloop transitions, 232 changer transitions 0/663 dead transitions. [2024-06-28 02:18:55,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 663 transitions, 10607 flow [2024-06-28 02:18:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:18:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:18:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:18:55,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 02:18:55,812 INFO L175 Difference]: Start difference. First operand has 394 places, 636 transitions, 8519 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:18:55,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 663 transitions, 10607 flow [2024-06-28 02:18:59,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 663 transitions, 10339 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 02:18:59,998 INFO L231 Difference]: Finished difference. Result has 397 places, 642 transitions, 8864 flow [2024-06-28 02:18:59,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8251, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8864, PETRI_PLACES=397, PETRI_TRANSITIONS=642} [2024-06-28 02:18:59,999 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 343 predicate places. [2024-06-28 02:18:59,999 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 642 transitions, 8864 flow [2024-06-28 02:18:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:18:59,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:18:59,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:18:59,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:18:59,999 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:18:59,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:18:59,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1192898655, now seen corresponding path program 8 times [2024-06-28 02:18:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:18:59,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007116195] [2024-06-28 02:18:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:00,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:19:00,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007116195] [2024-06-28 02:19:00,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007116195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:00,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:00,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:19:00,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303068131] [2024-06-28 02:19:00,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:00,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:19:00,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:19:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:19:00,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:00,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 642 transitions, 8864 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:00,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:00,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:00,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:02,971 INFO L124 PetriNetUnfolderBase]: 7009/11929 cut-off events. [2024-06-28 02:19:02,972 INFO L125 PetriNetUnfolderBase]: For 759160/759160 co-relation queries the response was YES. [2024-06-28 02:19:03,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85492 conditions, 11929 events. 7009/11929 cut-off events. For 759160/759160 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 88171 event pairs, 1911 based on Foata normal form. 2/11395 useless extension candidates. Maximal degree in co-relation 85319. Up to 9181 conditions per place. [2024-06-28 02:19:03,144 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 444 selfloop transitions, 210 changer transitions 0/667 dead transitions. [2024-06-28 02:19:03,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 667 transitions, 11117 flow [2024-06-28 02:19:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:19:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:19:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:19:03,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 02:19:03,145 INFO L175 Difference]: Start difference. First operand has 397 places, 642 transitions, 8864 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:19:03,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 667 transitions, 11117 flow [2024-06-28 02:19:08,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 667 transitions, 10467 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:19:08,227 INFO L231 Difference]: Finished difference. Result has 399 places, 645 transitions, 8719 flow [2024-06-28 02:19:08,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8224, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8719, PETRI_PLACES=399, PETRI_TRANSITIONS=645} [2024-06-28 02:19:08,227 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 345 predicate places. [2024-06-28 02:19:08,228 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 645 transitions, 8719 flow [2024-06-28 02:19:08,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:08,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:19:08,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:19:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:19:08,228 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:19:08,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:19:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1400484321, now seen corresponding path program 9 times [2024-06-28 02:19:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:19:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843241234] [2024-06-28 02:19:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:19:08,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:08,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843241234] [2024-06-28 02:19:08,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843241234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:08,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:08,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:19:08,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857164044] [2024-06-28 02:19:08,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:08,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:19:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:08,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:19:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:19:08,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:08,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 645 transitions, 8719 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:08,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:08,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:08,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:11,264 INFO L124 PetriNetUnfolderBase]: 7028/11966 cut-off events. [2024-06-28 02:19:11,264 INFO L125 PetriNetUnfolderBase]: For 768237/768237 co-relation queries the response was YES. [2024-06-28 02:19:11,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85233 conditions, 11966 events. 7028/11966 cut-off events. For 768237/768237 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 88454 event pairs, 1928 based on Foata normal form. 2/11430 useless extension candidates. Maximal degree in co-relation 85060. Up to 9199 conditions per place. [2024-06-28 02:19:11,450 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 449 selfloop transitions, 207 changer transitions 0/669 dead transitions. [2024-06-28 02:19:11,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 669 transitions, 10758 flow [2024-06-28 02:19:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:19:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:19:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:19:11,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 02:19:11,451 INFO L175 Difference]: Start difference. First operand has 399 places, 645 transitions, 8719 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:19:11,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 669 transitions, 10758 flow [2024-06-28 02:19:15,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 669 transitions, 10169 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 02:19:15,544 INFO L231 Difference]: Finished difference. Result has 400 places, 648 transitions, 8625 flow [2024-06-28 02:19:15,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8139, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8625, PETRI_PLACES=400, PETRI_TRANSITIONS=648} [2024-06-28 02:19:15,544 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 346 predicate places. [2024-06-28 02:19:15,544 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 648 transitions, 8625 flow [2024-06-28 02:19:15,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:15,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:19:15,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:19:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:19:15,545 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:19:15,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:19:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1473236925, now seen corresponding path program 10 times [2024-06-28 02:19:15,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:19:15,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236394801] [2024-06-28 02:19:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:19:16,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236394801] [2024-06-28 02:19:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236394801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:16,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:19:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239845975] [2024-06-28 02:19:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:16,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:19:16,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:19:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:19:16,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:16,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 648 transitions, 8625 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:16,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:16,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:18,609 INFO L124 PetriNetUnfolderBase]: 7056/12014 cut-off events. [2024-06-28 02:19:18,609 INFO L125 PetriNetUnfolderBase]: For 776792/776792 co-relation queries the response was YES. [2024-06-28 02:19:18,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85470 conditions, 12014 events. 7056/12014 cut-off events. For 776792/776792 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 88876 event pairs, 1910 based on Foata normal form. 2/11480 useless extension candidates. Maximal degree in co-relation 85296. Up to 10134 conditions per place. [2024-06-28 02:19:18,783 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 584 selfloop transitions, 73 changer transitions 0/670 dead transitions. [2024-06-28 02:19:18,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 670 transitions, 10177 flow [2024-06-28 02:19:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:19:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:19:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:19:18,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:19:18,784 INFO L175 Difference]: Start difference. First operand has 400 places, 648 transitions, 8625 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:19:18,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 670 transitions, 10177 flow [2024-06-28 02:19:24,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 670 transitions, 9779 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:19:24,073 INFO L231 Difference]: Finished difference. Result has 403 places, 654 transitions, 8499 flow [2024-06-28 02:19:24,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8235, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8499, PETRI_PLACES=403, PETRI_TRANSITIONS=654} [2024-06-28 02:19:24,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 349 predicate places. [2024-06-28 02:19:24,074 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 654 transitions, 8499 flow [2024-06-28 02:19:24,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:24,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:19:24,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:19:24,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:19:24,074 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:19:24,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:19:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1100462469, now seen corresponding path program 11 times [2024-06-28 02:19:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:19:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509757014] [2024-06-28 02:19:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:19:24,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:24,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509757014] [2024-06-28 02:19:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509757014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:24,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:24,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:19:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274877786] [2024-06-28 02:19:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:24,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:19:24,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:24,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:19:24,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:19:24,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:24,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 654 transitions, 8499 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:24,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:24,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:24,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:27,099 INFO L124 PetriNetUnfolderBase]: 7050/12006 cut-off events. [2024-06-28 02:19:27,099 INFO L125 PetriNetUnfolderBase]: For 773242/773242 co-relation queries the response was YES. [2024-06-28 02:19:27,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84455 conditions, 12006 events. 7050/12006 cut-off events. For 773242/773242 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 88771 event pairs, 1906 based on Foata normal form. 2/11472 useless extension candidates. Maximal degree in co-relation 84280. Up to 10061 conditions per place. [2024-06-28 02:19:27,279 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 581 selfloop transitions, 78 changer transitions 0/672 dead transitions. [2024-06-28 02:19:27,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 672 transitions, 10195 flow [2024-06-28 02:19:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:19:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:19:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:19:27,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 02:19:27,280 INFO L175 Difference]: Start difference. First operand has 403 places, 654 transitions, 8499 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:19:27,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 672 transitions, 10195 flow [2024-06-28 02:19:32,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 672 transitions, 9918 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 02:19:32,064 INFO L231 Difference]: Finished difference. Result has 405 places, 654 transitions, 8385 flow [2024-06-28 02:19:32,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8222, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8385, PETRI_PLACES=405, PETRI_TRANSITIONS=654} [2024-06-28 02:19:32,064 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 351 predicate places. [2024-06-28 02:19:32,064 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 654 transitions, 8385 flow [2024-06-28 02:19:32,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:32,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:19:32,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:19:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:19:32,065 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:19:32,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:19:32,065 INFO L85 PathProgramCache]: Analyzing trace with hash 945717539, now seen corresponding path program 12 times [2024-06-28 02:19:32,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:19:32,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112811334] [2024-06-28 02:19:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:32,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:19:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112811334] [2024-06-28 02:19:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112811334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:32,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:32,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:19:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410331436] [2024-06-28 02:19:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:32,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:19:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:19:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:19:32,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:32,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 654 transitions, 8385 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:32,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:32,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:32,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:35,348 INFO L124 PetriNetUnfolderBase]: 7044/11998 cut-off events. [2024-06-28 02:19:35,348 INFO L125 PetriNetUnfolderBase]: For 769885/769885 co-relation queries the response was YES. [2024-06-28 02:19:35,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83893 conditions, 11998 events. 7044/11998 cut-off events. For 769885/769885 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 88719 event pairs, 1905 based on Foata normal form. 2/11464 useless extension candidates. Maximal degree in co-relation 83718. Up to 10056 conditions per place. [2024-06-28 02:19:35,525 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 582 selfloop transitions, 81 changer transitions 0/676 dead transitions. [2024-06-28 02:19:35,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 676 transitions, 9923 flow [2024-06-28 02:19:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:19:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:19:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-28 02:19:35,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 02:19:35,526 INFO L175 Difference]: Start difference. First operand has 405 places, 654 transitions, 8385 flow. Second operand 10 states and 230 transitions. [2024-06-28 02:19:35,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 676 transitions, 9923 flow [2024-06-28 02:19:40,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 676 transitions, 9494 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 02:19:40,541 INFO L231 Difference]: Finished difference. Result has 408 places, 654 transitions, 8124 flow [2024-06-28 02:19:40,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7956, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8124, PETRI_PLACES=408, PETRI_TRANSITIONS=654} [2024-06-28 02:19:40,541 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 354 predicate places. [2024-06-28 02:19:40,542 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 654 transitions, 8124 flow [2024-06-28 02:19:40,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:40,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:19:40,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:19:40,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:19:40,542 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:19:40,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:19:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1725520793, now seen corresponding path program 1 times [2024-06-28 02:19:40,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:19:40,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131213040] [2024-06-28 02:19:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:41,163 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 02:19:41,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:41,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131213040] [2024-06-28 02:19:41,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131213040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:41,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:41,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:19:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794740835] [2024-06-28 02:19:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:19:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:19:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:19:41,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:41,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 654 transitions, 8124 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:41,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:41,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:41,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:43,994 INFO L124 PetriNetUnfolderBase]: 7075/12029 cut-off events. [2024-06-28 02:19:43,994 INFO L125 PetriNetUnfolderBase]: For 780695/780695 co-relation queries the response was YES. [2024-06-28 02:19:44,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83490 conditions, 12029 events. 7075/12029 cut-off events. For 780695/780695 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 88646 event pairs, 1545 based on Foata normal form. 2/11497 useless extension candidates. Maximal degree in co-relation 83316. Up to 9546 conditions per place. [2024-06-28 02:19:44,146 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 565 selfloop transitions, 104 changer transitions 0/682 dead transitions. [2024-06-28 02:19:44,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 682 transitions, 9664 flow [2024-06-28 02:19:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:19:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:19:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:19:44,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 02:19:44,147 INFO L175 Difference]: Start difference. First operand has 408 places, 654 transitions, 8124 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:19:44,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 682 transitions, 9664 flow [2024-06-28 02:19:48,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 682 transitions, 9452 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:19:48,197 INFO L231 Difference]: Finished difference. Result has 405 places, 656 transitions, 8194 flow [2024-06-28 02:19:48,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7912, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8194, PETRI_PLACES=405, PETRI_TRANSITIONS=656} [2024-06-28 02:19:48,198 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 351 predicate places. [2024-06-28 02:19:48,198 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 656 transitions, 8194 flow [2024-06-28 02:19:48,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:48,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:19:48,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:19:48,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:19:48,198 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:19:48,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:19:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1416440503, now seen corresponding path program 2 times [2024-06-28 02:19:48,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:19:48,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93552069] [2024-06-28 02:19:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:48,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:19:48,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93552069] [2024-06-28 02:19:48,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93552069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:48,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:48,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:19:48,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098518774] [2024-06-28 02:19:48,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:48,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:19:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:19:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:19:48,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:48,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 656 transitions, 8194 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:48,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:48,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:48,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:51,711 INFO L124 PetriNetUnfolderBase]: 7114/12109 cut-off events. [2024-06-28 02:19:51,712 INFO L125 PetriNetUnfolderBase]: For 793266/793266 co-relation queries the response was YES. [2024-06-28 02:19:51,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84797 conditions, 12109 events. 7114/12109 cut-off events. For 793266/793266 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 89522 event pairs, 1913 based on Foata normal form. 2/11577 useless extension candidates. Maximal degree in co-relation 84622. Up to 10047 conditions per place. [2024-06-28 02:19:51,884 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 599 selfloop transitions, 70 changer transitions 0/682 dead transitions. [2024-06-28 02:19:51,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 682 transitions, 9998 flow [2024-06-28 02:19:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:19:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:19:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:19:51,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 02:19:51,885 INFO L175 Difference]: Start difference. First operand has 405 places, 656 transitions, 8194 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:19:51,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 682 transitions, 9998 flow [2024-06-28 02:19:56,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 682 transitions, 9758 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:19:56,112 INFO L231 Difference]: Finished difference. Result has 407 places, 660 transitions, 8217 flow [2024-06-28 02:19:56,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7954, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8217, PETRI_PLACES=407, PETRI_TRANSITIONS=660} [2024-06-28 02:19:56,112 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 353 predicate places. [2024-06-28 02:19:56,112 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 660 transitions, 8217 flow [2024-06-28 02:19:56,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:56,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:19:56,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:19:56,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:19:56,113 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:19:56,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:19:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1418213281, now seen corresponding path program 3 times [2024-06-28 02:19:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:19:56,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569309578] [2024-06-28 02:19:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:19:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:19:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:19:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:19:56,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:19:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569309578] [2024-06-28 02:19:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569309578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:19:56,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:19:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:19:56,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214850829] [2024-06-28 02:19:56,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:19:56,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:19:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:19:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:19:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:19:56,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:19:56,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 660 transitions, 8217 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:19:56,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:19:56,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:19:56,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:19:59,680 INFO L124 PetriNetUnfolderBase]: 7109/12110 cut-off events. [2024-06-28 02:19:59,681 INFO L125 PetriNetUnfolderBase]: For 789698/789698 co-relation queries the response was YES. [2024-06-28 02:19:59,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84266 conditions, 12110 events. 7109/12110 cut-off events. For 789698/789698 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 89614 event pairs, 1925 based on Foata normal form. 2/11572 useless extension candidates. Maximal degree in co-relation 84090. Up to 10194 conditions per place. [2024-06-28 02:19:59,836 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 593 selfloop transitions, 71 changer transitions 0/677 dead transitions. [2024-06-28 02:19:59,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 677 transitions, 9647 flow [2024-06-28 02:19:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:19:59,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:19:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:19:59,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 02:19:59,837 INFO L175 Difference]: Start difference. First operand has 407 places, 660 transitions, 8217 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:19:59,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 677 transitions, 9647 flow [2024-06-28 02:20:03,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 677 transitions, 9480 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 02:20:03,735 INFO L231 Difference]: Finished difference. Result has 411 places, 660 transitions, 8199 flow [2024-06-28 02:20:03,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8050, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8199, PETRI_PLACES=411, PETRI_TRANSITIONS=660} [2024-06-28 02:20:03,735 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 357 predicate places. [2024-06-28 02:20:03,735 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 660 transitions, 8199 flow [2024-06-28 02:20:03,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:03,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:20:03,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:20:03,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:20:03,736 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:20:03,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:20:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2091723995, now seen corresponding path program 1 times [2024-06-28 02:20:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:20:03,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879199328] [2024-06-28 02:20:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:20:03,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:20:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:20:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:20:04,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:20:04,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879199328] [2024-06-28 02:20:04,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879199328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:20:04,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:20:04,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:20:04,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231371752] [2024-06-28 02:20:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:20:04,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:20:04,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:20:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:20:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:20:04,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:20:04,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 660 transitions, 8199 flow. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:04,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:20:04,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:20:04,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:20:07,661 INFO L124 PetriNetUnfolderBase]: 7176/12231 cut-off events. [2024-06-28 02:20:07,662 INFO L125 PetriNetUnfolderBase]: For 816836/816836 co-relation queries the response was YES. [2024-06-28 02:20:07,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85557 conditions, 12231 events. 7176/12231 cut-off events. For 816836/816836 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 90704 event pairs, 1940 based on Foata normal form. 2/11693 useless extension candidates. Maximal degree in co-relation 85379. Up to 10215 conditions per place. [2024-06-28 02:20:07,820 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 607 selfloop transitions, 74 changer transitions 0/694 dead transitions. [2024-06-28 02:20:07,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 694 transitions, 10121 flow [2024-06-28 02:20:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:20:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:20:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:20:07,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:20:07,821 INFO L175 Difference]: Start difference. First operand has 411 places, 660 transitions, 8199 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:20:07,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 694 transitions, 10121 flow [2024-06-28 02:20:13,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 694 transitions, 9959 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:20:13,556 INFO L231 Difference]: Finished difference. Result has 414 places, 664 transitions, 8346 flow [2024-06-28 02:20:13,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8037, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8346, PETRI_PLACES=414, PETRI_TRANSITIONS=664} [2024-06-28 02:20:13,557 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 360 predicate places. [2024-06-28 02:20:13,557 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 664 transitions, 8346 flow [2024-06-28 02:20:13,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:13,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:20:13,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:20:13,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:20:13,557 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:20:13,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:20:13,557 INFO L85 PathProgramCache]: Analyzing trace with hash 611585121, now seen corresponding path program 2 times [2024-06-28 02:20:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:20:13,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668615934] [2024-06-28 02:20:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:20:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:20:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:20:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:20:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:20:14,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668615934] [2024-06-28 02:20:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668615934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:20:14,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:20:14,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:20:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484071976] [2024-06-28 02:20:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:20:14,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:20:14,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:20:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:20:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:20:14,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:20:14,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 664 transitions, 8346 flow. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:14,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:20:14,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:20:14,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:20:17,332 INFO L124 PetriNetUnfolderBase]: 7207/12289 cut-off events. [2024-06-28 02:20:17,332 INFO L125 PetriNetUnfolderBase]: For 840539/840539 co-relation queries the response was YES. [2024-06-28 02:20:17,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86803 conditions, 12289 events. 7207/12289 cut-off events. For 840539/840539 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 91139 event pairs, 1956 based on Foata normal form. 2/11747 useless extension candidates. Maximal degree in co-relation 86624. Up to 10340 conditions per place. [2024-06-28 02:20:17,491 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 608 selfloop transitions, 70 changer transitions 0/691 dead transitions. [2024-06-28 02:20:17,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 691 transitions, 9934 flow [2024-06-28 02:20:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:20:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:20:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:20:17,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 02:20:17,492 INFO L175 Difference]: Start difference. First operand has 414 places, 664 transitions, 8346 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:20:17,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 691 transitions, 9934 flow [2024-06-28 02:20:23,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 691 transitions, 9728 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-28 02:20:23,804 INFO L231 Difference]: Finished difference. Result has 418 places, 666 transitions, 8369 flow [2024-06-28 02:20:23,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8164, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8369, PETRI_PLACES=418, PETRI_TRANSITIONS=666} [2024-06-28 02:20:23,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 364 predicate places. [2024-06-28 02:20:23,804 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 666 transitions, 8369 flow [2024-06-28 02:20:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:23,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:20:23,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:20:23,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:20:23,804 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:20:23,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:20:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1621235135, now seen corresponding path program 3 times [2024-06-28 02:20:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:20:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511359182] [2024-06-28 02:20:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:20:23,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:20:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:20:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:20:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:20:24,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511359182] [2024-06-28 02:20:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511359182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:20:24,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:20:24,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:20:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969019849] [2024-06-28 02:20:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:20:24,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:20:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:20:24,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:20:24,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:20:24,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:20:24,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 666 transitions, 8369 flow. Second operand has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:24,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:20:24,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:20:24,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:20:27,664 INFO L124 PetriNetUnfolderBase]: 7202/12282 cut-off events. [2024-06-28 02:20:27,665 INFO L125 PetriNetUnfolderBase]: For 827467/827467 co-relation queries the response was YES. [2024-06-28 02:20:27,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86026 conditions, 12282 events. 7202/12282 cut-off events. For 827467/827467 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 91147 event pairs, 1955 based on Foata normal form. 2/11740 useless extension candidates. Maximal degree in co-relation 85845. Up to 10348 conditions per place. [2024-06-28 02:20:27,842 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 612 selfloop transitions, 66 changer transitions 0/691 dead transitions. [2024-06-28 02:20:27,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 691 transitions, 9877 flow [2024-06-28 02:20:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:20:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:20:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:20:27,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 02:20:27,843 INFO L175 Difference]: Start difference. First operand has 418 places, 666 transitions, 8369 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:20:27,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 691 transitions, 9877 flow [2024-06-28 02:20:33,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 691 transitions, 9652 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 02:20:33,090 INFO L231 Difference]: Finished difference. Result has 420 places, 666 transitions, 8281 flow [2024-06-28 02:20:33,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8144, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8281, PETRI_PLACES=420, PETRI_TRANSITIONS=666} [2024-06-28 02:20:33,091 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 366 predicate places. [2024-06-28 02:20:33,091 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 666 transitions, 8281 flow [2024-06-28 02:20:33,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:33,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:20:33,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:20:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:20:33,091 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:20:33,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:20:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1425171045, now seen corresponding path program 4 times [2024-06-28 02:20:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:20:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548628127] [2024-06-28 02:20:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:20:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:20:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:20:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:20:33,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:20:33,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548628127] [2024-06-28 02:20:33,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548628127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:20:33,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:20:33,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:20:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172510962] [2024-06-28 02:20:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:20:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:20:33,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:20:33,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:20:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:20:34,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:20:34,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 666 transitions, 8281 flow. Second operand has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:34,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:20:34,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:20:34,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:20:36,753 INFO L124 PetriNetUnfolderBase]: 7233/12340 cut-off events. [2024-06-28 02:20:36,754 INFO L125 PetriNetUnfolderBase]: For 838344/838344 co-relation queries the response was YES. [2024-06-28 02:20:36,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86172 conditions, 12340 events. 7233/12340 cut-off events. For 838344/838344 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 91681 event pairs, 1982 based on Foata normal form. 2/11792 useless extension candidates. Maximal degree in co-relation 85990. Up to 10287 conditions per place. [2024-06-28 02:20:37,098 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 587 selfloop transitions, 91 changer transitions 0/691 dead transitions. [2024-06-28 02:20:37,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 691 transitions, 9863 flow [2024-06-28 02:20:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:20:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:20:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:20:37,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 02:20:37,099 INFO L175 Difference]: Start difference. First operand has 420 places, 666 transitions, 8281 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:20:37,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 691 transitions, 9863 flow [2024-06-28 02:20:42,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 691 transitions, 9712 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:20:42,999 INFO L231 Difference]: Finished difference. Result has 421 places, 668 transitions, 8401 flow [2024-06-28 02:20:42,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8130, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8401, PETRI_PLACES=421, PETRI_TRANSITIONS=668} [2024-06-28 02:20:42,999 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 367 predicate places. [2024-06-28 02:20:42,999 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 668 transitions, 8401 flow [2024-06-28 02:20:42,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:42,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:20:42,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:20:42,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:20:42,999 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:20:43,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:20:43,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1414695525, now seen corresponding path program 5 times [2024-06-28 02:20:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:20:43,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530703946] [2024-06-28 02:20:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:20:43,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:20:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:20:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:20:43,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:20:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530703946] [2024-06-28 02:20:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530703946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:20:43,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:20:43,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:20:43,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302829266] [2024-06-28 02:20:43,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:20:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:20:43,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:20:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:20:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:20:43,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:20:43,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 668 transitions, 8401 flow. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:43,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:20:43,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:20:43,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:20:46,791 INFO L124 PetriNetUnfolderBase]: 7300/12451 cut-off events. [2024-06-28 02:20:46,791 INFO L125 PetriNetUnfolderBase]: For 883257/883257 co-relation queries the response was YES. [2024-06-28 02:20:46,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88443 conditions, 12451 events. 7300/12451 cut-off events. For 883257/883257 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 92661 event pairs, 1976 based on Foata normal form. 2/11898 useless extension candidates. Maximal degree in co-relation 88260. Up to 10263 conditions per place. [2024-06-28 02:20:46,977 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 580 selfloop transitions, 108 changer transitions 0/701 dead transitions. [2024-06-28 02:20:46,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 701 transitions, 10365 flow [2024-06-28 02:20:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:20:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:20:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:20:46,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:20:46,978 INFO L175 Difference]: Start difference. First operand has 421 places, 668 transitions, 8401 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:20:46,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 701 transitions, 10365 flow [2024-06-28 02:20:53,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 701 transitions, 10110 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 02:20:53,649 INFO L231 Difference]: Finished difference. Result has 424 places, 673 transitions, 8563 flow [2024-06-28 02:20:53,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8146, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8563, PETRI_PLACES=424, PETRI_TRANSITIONS=673} [2024-06-28 02:20:53,649 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 370 predicate places. [2024-06-28 02:20:53,649 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 673 transitions, 8563 flow [2024-06-28 02:20:53,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:53,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:20:53,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:20:53,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:20:53,649 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:20:53,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:20:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1116679615, now seen corresponding path program 6 times [2024-06-28 02:20:53,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:20:53,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290769023] [2024-06-28 02:20:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:20:53,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:20:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:20:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:20:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:20:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290769023] [2024-06-28 02:20:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290769023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:20:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:20:54,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:20:54,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482670903] [2024-06-28 02:20:54,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:20:54,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:20:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:20:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:20:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:20:54,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:20:54,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 673 transitions, 8563 flow. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:20:54,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:20:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:20:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:20:57,573 INFO L124 PetriNetUnfolderBase]: 7331/12518 cut-off events. [2024-06-28 02:20:57,573 INFO L125 PetriNetUnfolderBase]: For 903951/903951 co-relation queries the response was YES. [2024-06-28 02:20:57,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89543 conditions, 12518 events. 7331/12518 cut-off events. For 903951/903951 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 93354 event pairs, 2002 based on Foata normal form. 2/11962 useless extension candidates. Maximal degree in co-relation 89358. Up to 10409 conditions per place. [2024-06-28 02:20:57,742 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 583 selfloop transitions, 102 changer transitions 0/698 dead transitions. [2024-06-28 02:20:57,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 698 transitions, 10169 flow [2024-06-28 02:20:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:20:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:20:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:20:57,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 02:20:57,743 INFO L175 Difference]: Start difference. First operand has 424 places, 673 transitions, 8563 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:20:57,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 698 transitions, 10169 flow [2024-06-28 02:21:04,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 698 transitions, 9898 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 02:21:04,063 INFO L231 Difference]: Finished difference. Result has 428 places, 675 transitions, 8595 flow [2024-06-28 02:21:04,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8320, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8595, PETRI_PLACES=428, PETRI_TRANSITIONS=675} [2024-06-28 02:21:04,063 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 374 predicate places. [2024-06-28 02:21:04,063 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 675 transitions, 8595 flow [2024-06-28 02:21:04,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:04,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:04,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:04,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:21:04,064 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:21:04,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:04,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2114667109, now seen corresponding path program 7 times [2024-06-28 02:21:04,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:04,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828985810] [2024-06-28 02:21:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:04,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828985810] [2024-06-28 02:21:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828985810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:04,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:21:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568054] [2024-06-28 02:21:04,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:04,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:21:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:04,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:21:04,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:21:05,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:21:05,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 675 transitions, 8595 flow. Second operand has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:05,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:05,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:21:05,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:08,178 INFO L124 PetriNetUnfolderBase]: 7398/12824 cut-off events. [2024-06-28 02:21:08,178 INFO L125 PetriNetUnfolderBase]: For 930847/930847 co-relation queries the response was YES. [2024-06-28 02:21:08,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90874 conditions, 12824 events. 7398/12824 cut-off events. For 930847/930847 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 96770 event pairs, 1875 based on Foata normal form. 2/12246 useless extension candidates. Maximal degree in co-relation 90687. Up to 9781 conditions per place. [2024-06-28 02:21:08,348 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 551 selfloop transitions, 152 changer transitions 0/716 dead transitions. [2024-06-28 02:21:08,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 716 transitions, 10967 flow [2024-06-28 02:21:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:21:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:21:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:21:08,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 02:21:08,349 INFO L175 Difference]: Start difference. First operand has 428 places, 675 transitions, 8595 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:21:08,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 716 transitions, 10967 flow [2024-06-28 02:21:11,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 716 transitions, 10714 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:21:11,888 INFO L231 Difference]: Finished difference. Result has 431 places, 683 transitions, 8985 flow [2024-06-28 02:21:11,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8342, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8985, PETRI_PLACES=431, PETRI_TRANSITIONS=683} [2024-06-28 02:21:11,889 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 377 predicate places. [2024-06-28 02:21:11,889 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 683 transitions, 8985 flow [2024-06-28 02:21:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:11,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:11,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:11,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:21:11,890 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:21:11,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash 416827071, now seen corresponding path program 8 times [2024-06-28 02:21:11,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:11,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152955684] [2024-06-28 02:21:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:12,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:12,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152955684] [2024-06-28 02:21:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152955684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:12,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:21:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371722240] [2024-06-28 02:21:12,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:12,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:21:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:12,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:21:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:21:12,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:21:12,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 683 transitions, 8985 flow. Second operand has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:12,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:12,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:21:12,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:15,876 INFO L124 PetriNetUnfolderBase]: 7465/12947 cut-off events. [2024-06-28 02:21:15,876 INFO L125 PetriNetUnfolderBase]: For 978670/978670 co-relation queries the response was YES. [2024-06-28 02:21:16,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94179 conditions, 12947 events. 7465/12947 cut-off events. For 978670/978670 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97937 event pairs, 1902 based on Foata normal form. 2/12365 useless extension candidates. Maximal degree in co-relation 93990. Up to 9841 conditions per place. [2024-06-28 02:21:16,262 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 549 selfloop transitions, 158 changer transitions 0/720 dead transitions. [2024-06-28 02:21:16,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 720 transitions, 11271 flow [2024-06-28 02:21:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:21:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:21:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:21:16,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 02:21:16,264 INFO L175 Difference]: Start difference. First operand has 431 places, 683 transitions, 8985 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:21:16,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 720 transitions, 11271 flow