./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix038.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/mix038.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/mix038.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix038.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 01:36:15,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:36:15,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:36:15,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:36:15,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:36:15,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:36:15,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:36:15,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:36:15,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:36:15,479 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:36:15,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:36:15,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:36:15,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:36:15,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:36:15,481 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:36:15,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:36:15,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:36:15,482 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:36:15,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:36:15,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:36:15,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:36:15,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:36:15,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:36:15,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:36:15,483 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:36:15,484 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:36:15,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:36:15,484 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:36:15,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:36:15,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:36:15,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:36:15,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:36:15,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:36:15,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:36:15,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:36:15,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:36:15,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:36:15,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:36:15,487 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:36:15,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:36:15,488 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:36:15,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:36:15,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:36:15,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:36:15,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:36:15,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:36:15,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:36:15,719 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:36:15,720 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:36:15,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix038.opt.yml/witness.yml [2024-06-28 01:36:15,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:36:15,878 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:36:15,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix038.opt.i [2024-06-28 01:36:17,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:36:17,202 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:36:17,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix038.opt.i [2024-06-28 01:36:17,217 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1832c5256/819e4725a0994082877f5e24f99e65e7/FLAGd9359a47c [2024-06-28 01:36:17,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1832c5256/819e4725a0994082877f5e24f99e65e7 [2024-06-28 01:36:17,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:36:17,228 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:36:17,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:36:17,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:36:17,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:36:17,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:36:15" (1/2) ... [2024-06-28 01:36:17,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507423ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:36:17, skipping insertion in model container [2024-06-28 01:36:17,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:36:15" (1/2) ... [2024-06-28 01:36:17,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@103eeb9c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:36:17, skipping insertion in model container [2024-06-28 01:36:17,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:36:17" (2/2) ... [2024-06-28 01:36:17,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507423ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17, skipping insertion in model container [2024-06-28 01:36:17,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:36:17" (2/2) ... [2024-06-28 01:36:17,236 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:36:17,302 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:36:17,303 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! 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$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) [2024-06-28 01:36:17,304 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && y$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_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 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)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) [2024-06-28 01:36:17,304 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! 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$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) [2024-06-28 01:36:17,304 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:36:17,304 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-28 01:36:17,336 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:36:17,487 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/mix038.opt.i[944,957] [2024-06-28 01:36:17,668 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:36:17,680 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:36:17,709 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/mix038.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:36:17,765 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:36:17,792 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:36:17,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17 WrapperNode [2024-06-28 01:36:17,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:36:17,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:36:17,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:36:17,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:36:17,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,876 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 129 [2024-06-28 01:36:17,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:36:17,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:36:17,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:36:17,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:36:17,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,907 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 01:36:17,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:36:17,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:36:17,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:36:17,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:36:17,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (1/1) ... [2024-06-28 01:36:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:36:17,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:36:17,958 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 01:36:17,961 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 01:36:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:36:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:36:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:36:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:36:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:36:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:36:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:36:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:36:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:36:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:36:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:36:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:36:17,994 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 01:36:18,102 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:36:18,104 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:36:18,485 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:36:18,485 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:36:18,633 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:36:18,633 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:36:18,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:36:18 BoogieIcfgContainer [2024-06-28 01:36:18,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:36:18,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:36:18,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:36:18,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:36:18,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:36:15" (1/4) ... [2024-06-28 01:36:18,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef4fa16 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:36:18, skipping insertion in model container [2024-06-28 01:36:18,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:36:17" (2/4) ... [2024-06-28 01:36:18,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef4fa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:36:18, skipping insertion in model container [2024-06-28 01:36:18,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:36:17" (3/4) ... [2024-06-28 01:36:18,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef4fa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:36:18, skipping insertion in model container [2024-06-28 01:36:18,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:36:18" (4/4) ... [2024-06-28 01:36:18,646 INFO L112 eAbstractionObserver]: Analyzing ICFG mix038.opt.i [2024-06-28 01:36:18,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:36:18,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:36:18,661 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:36:18,697 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:36:18,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:36:18,743 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:36:18,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:36:18,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 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 01:36:18,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:36:18,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:36:18,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:36:18,761 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;@2dd6181b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:36:18,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:36:18,764 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:36:18,764 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:36:18,764 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:36:18,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:18,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:36:18,765 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 01:36:18,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash 342413911, now seen corresponding path program 1 times [2024-06-28 01:36:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937392202] [2024-06-28 01:36:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:18,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:19,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937392202] [2024-06-28 01:36:19,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937392202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:19,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:19,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:36:19,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201102064] [2024-06-28 01:36:19,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:19,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:36:19,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:36:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:36:19,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-28 01:36:19,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:19,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:19,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-28 01:36:19,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:20,155 INFO L124 PetriNetUnfolderBase]: 3005/5043 cut-off events. [2024-06-28 01:36:20,155 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:36:20,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9458 conditions, 5043 events. 3005/5043 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33102 event pairs, 2435 based on Foata normal form. 151/4782 useless extension candidates. Maximal degree in co-relation 9446. Up to 4336 conditions per place. [2024-06-28 01:36:20,186 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 40 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:36:20,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 223 flow [2024-06-28 01:36:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:36:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:36:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-28 01:36:20,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-06-28 01:36:20,197 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 101 transitions. [2024-06-28 01:36:20,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 223 flow [2024-06-28 01:36:20,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:20,207 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:36:20,209 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 01:36:20,213 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:36:20,213 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:36:20,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:20,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:20,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:20,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:36:20,214 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 01:36:20,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:20,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1651640658, now seen corresponding path program 1 times [2024-06-28 01:36:20,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:20,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147470822] [2024-06-28 01:36:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:20,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147470822] [2024-06-28 01:36:20,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147470822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:20,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:20,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:36:20,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444762633] [2024-06-28 01:36:20,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:20,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:36:20,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:36:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:36:20,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:36:20,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:20,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:20,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:36:20,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:21,341 INFO L124 PetriNetUnfolderBase]: 3428/5531 cut-off events. [2024-06-28 01:36:21,341 INFO L125 PetriNetUnfolderBase]: For 738/738 co-relation queries the response was YES. [2024-06-28 01:36:21,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11741 conditions, 5531 events. 3428/5531 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 34477 event pairs, 1983 based on Foata normal form. 3/5187 useless extension candidates. Maximal degree in co-relation 11729. Up to 4908 conditions per place. [2024-06-28 01:36:21,371 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 52 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-28 01:36:21,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 319 flow [2024-06-28 01:36:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:36:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:36:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-28 01:36:21,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:36:21,376 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 128 transitions. [2024-06-28 01:36:21,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 319 flow [2024-06-28 01:36:21,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:36:21,382 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-28 01:36:21,382 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 01:36:21,383 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:36:21,383 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-28 01:36:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:21,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:21,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:21,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:36:21,386 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:21,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash 338748302, now seen corresponding path program 1 times [2024-06-28 01:36:21,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:21,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516442388] [2024-06-28 01:36:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:21,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:21,935 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 01:36:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516442388] [2024-06-28 01:36:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516442388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:21,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:36:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981103246] [2024-06-28 01:36:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:21,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:36:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:36:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:36:21,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:36:21,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:21,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:21,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:36:21,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:22,469 INFO L124 PetriNetUnfolderBase]: 3487/5781 cut-off events. [2024-06-28 01:36:22,469 INFO L125 PetriNetUnfolderBase]: For 2214/2214 co-relation queries the response was YES. [2024-06-28 01:36:22,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13296 conditions, 5781 events. 3487/5781 cut-off events. For 2214/2214 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 37511 event pairs, 1696 based on Foata normal form. 7/5412 useless extension candidates. Maximal degree in co-relation 13282. Up to 4772 conditions per place. [2024-06-28 01:36:22,501 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 72 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-28 01:36:22,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 531 flow [2024-06-28 01:36:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:36:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:36:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-06-28 01:36:22,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-06-28 01:36:22,506 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 5 states and 170 transitions. [2024-06-28 01:36:22,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 531 flow [2024-06-28 01:36:22,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 106 transitions, 512 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:36:22,510 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 306 flow [2024-06-28 01:36:22,510 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=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-06-28 01:36:22,511 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-28 01:36:22,511 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 306 flow [2024-06-28 01:36:22,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:22,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:22,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:22,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:36:22,512 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 01:36:22,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1735070523, now seen corresponding path program 1 times [2024-06-28 01:36:22,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:22,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41879275] [2024-06-28 01:36:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:22,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:23,134 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 01:36:23,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41879275] [2024-06-28 01:36:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41879275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:23,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:23,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:36:23,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27017957] [2024-06-28 01:36:23,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:23,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:36:23,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:23,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:36:23,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:36:23,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:36:23,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:23,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:23,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:36:23,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:23,832 INFO L124 PetriNetUnfolderBase]: 3729/6101 cut-off events. [2024-06-28 01:36:23,833 INFO L125 PetriNetUnfolderBase]: For 5839/5839 co-relation queries the response was YES. [2024-06-28 01:36:23,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16762 conditions, 6101 events. 3729/6101 cut-off events. For 5839/5839 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39250 event pairs, 1276 based on Foata normal form. 26/5688 useless extension candidates. Maximal degree in co-relation 16745. Up to 4816 conditions per place. [2024-06-28 01:36:23,858 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 84 selfloop transitions, 24 changer transitions 0/121 dead transitions. [2024-06-28 01:36:23,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 121 transitions, 686 flow [2024-06-28 01:36:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-06-28 01:36:23,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-06-28 01:36:23,860 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 306 flow. Second operand 6 states and 201 transitions. [2024-06-28 01:36:23,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 121 transitions, 686 flow [2024-06-28 01:36:23,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 121 transitions, 674 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:36:23,865 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 373 flow [2024-06-28 01:36:23,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-28 01:36:23,865 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-28 01:36:23,866 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 373 flow [2024-06-28 01:36:23,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:23,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:23,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:36:23,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:23,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:23,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1896007988, now seen corresponding path program 1 times [2024-06-28 01:36:23,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:23,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194080227] [2024-06-28 01:36:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:24,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:24,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194080227] [2024-06-28 01:36:24,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194080227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:24,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:24,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:36:24,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339405947] [2024-06-28 01:36:24,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:24,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:36:24,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:24,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:36:24,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:36:24,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:36:24,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 373 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 01:36:24,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:24,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:36:24,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:25,239 INFO L124 PetriNetUnfolderBase]: 3758/5886 cut-off events. [2024-06-28 01:36:25,239 INFO L125 PetriNetUnfolderBase]: For 7515/7515 co-relation queries the response was YES. [2024-06-28 01:36:25,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18036 conditions, 5886 events. 3758/5886 cut-off events. For 7515/7515 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 35285 event pairs, 1038 based on Foata normal form. 4/5592 useless extension candidates. Maximal degree in co-relation 18015. Up to 5353 conditions per place. [2024-06-28 01:36:25,267 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 68 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-06-28 01:36:25,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 579 flow [2024-06-28 01:36:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:36:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:36:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-28 01:36:25,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 01:36:25,270 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 373 flow. Second operand 5 states and 138 transitions. [2024-06-28 01:36:25,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 579 flow [2024-06-28 01:36:25,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 518 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:25,283 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 341 flow [2024-06-28 01:36:25,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 01:36:25,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:36:25,286 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 341 flow [2024-06-28 01:36:25,286 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 01:36:25,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:25,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:25,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:36:25,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:25,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:25,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1361817803, now seen corresponding path program 1 times [2024-06-28 01:36:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:25,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362408194] [2024-06-28 01:36:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362408194] [2024-06-28 01:36:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362408194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:25,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:36:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335641538] [2024-06-28 01:36:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:25,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:36:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:36:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:36:25,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 48 [2024-06-28 01:36:25,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 341 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 01:36:25,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:25,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 48 [2024-06-28 01:36:25,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:25,563 INFO L124 PetriNetUnfolderBase]: 1035/2367 cut-off events. [2024-06-28 01:36:25,564 INFO L125 PetriNetUnfolderBase]: For 2459/2699 co-relation queries the response was YES. [2024-06-28 01:36:25,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5381 conditions, 2367 events. 1035/2367 cut-off events. For 2459/2699 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18795 event pairs, 221 based on Foata normal form. 4/2224 useless extension candidates. Maximal degree in co-relation 5359. Up to 1130 conditions per place. [2024-06-28 01:36:25,577 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 25 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2024-06-28 01:36:25,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 367 flow [2024-06-28 01:36:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:36:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:36:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-28 01:36:25,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-06-28 01:36:25,578 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 341 flow. Second operand 3 states and 109 transitions. [2024-06-28 01:36:25,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 367 flow [2024-06-28 01:36:25,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:25,581 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 279 flow [2024-06-28 01:36:25,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-28 01:36:25,582 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-28 01:36:25,582 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 279 flow [2024-06-28 01:36:25,582 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 01:36:25,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:25,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:25,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:36:25,583 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 01:36:25,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash 991216787, now seen corresponding path program 1 times [2024-06-28 01:36:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730086256] [2024-06-28 01:36:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:26,144 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 01:36:26,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730086256] [2024-06-28 01:36:26,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730086256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:26,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:26,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:36:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345116287] [2024-06-28 01:36:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:26,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:36:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:36:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:36:26,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:26,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:36:26,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:26,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:26,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:26,967 INFO L124 PetriNetUnfolderBase]: 3711/5667 cut-off events. [2024-06-28 01:36:26,968 INFO L125 PetriNetUnfolderBase]: For 8987/8987 co-relation queries the response was YES. [2024-06-28 01:36:26,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16523 conditions, 5667 events. 3711/5667 cut-off events. For 8987/8987 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 32650 event pairs, 919 based on Foata normal form. 8/5657 useless extension candidates. Maximal degree in co-relation 16502. Up to 5068 conditions per place. [2024-06-28 01:36:26,997 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 68 selfloop transitions, 19 changer transitions 4/102 dead transitions. [2024-06-28 01:36:26,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 591 flow [2024-06-28 01:36:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-28 01:36:26,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 01:36:26,999 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 279 flow. Second operand 6 states and 168 transitions. [2024-06-28 01:36:26,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 591 flow [2024-06-28 01:36:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 102 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:36:27,007 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 333 flow [2024-06-28 01:36:27,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-06-28 01:36:27,009 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-28 01:36:27,009 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 333 flow [2024-06-28 01:36:27,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:36:27,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:27,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:27,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:36:27,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:27,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash 997555667, now seen corresponding path program 2 times [2024-06-28 01:36:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:27,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111197389] [2024-06-28 01:36:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:27,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:27,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111197389] [2024-06-28 01:36:27,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111197389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:27,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:27,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:36:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827457019] [2024-06-28 01:36:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:27,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:36:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:27,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:36:27,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:36:27,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:27,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:36:27,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:27,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:27,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:28,507 INFO L124 PetriNetUnfolderBase]: 3214/4912 cut-off events. [2024-06-28 01:36:28,507 INFO L125 PetriNetUnfolderBase]: For 8948/8948 co-relation queries the response was YES. [2024-06-28 01:36:28,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14677 conditions, 4912 events. 3214/4912 cut-off events. For 8948/8948 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 27811 event pairs, 845 based on Foata normal form. 4/4894 useless extension candidates. Maximal degree in co-relation 14654. Up to 4395 conditions per place. [2024-06-28 01:36:28,531 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 62 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2024-06-28 01:36:28,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 565 flow [2024-06-28 01:36:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 01:36:28,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:36:28,533 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 333 flow. Second operand 6 states and 160 transitions. [2024-06-28 01:36:28,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 565 flow [2024-06-28 01:36:28,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 536 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:28,542 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 352 flow [2024-06-28 01:36:28,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-28 01:36:28,544 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-28 01:36:28,544 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 352 flow [2024-06-28 01:36:28,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:36:28,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:28,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:28,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:36:28,545 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 01:36:28,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash 582645027, now seen corresponding path program 1 times [2024-06-28 01:36:28,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:28,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849589155] [2024-06-28 01:36:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:28,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:29,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:29,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849589155] [2024-06-28 01:36:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849589155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:29,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963249599] [2024-06-28 01:36:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:29,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:29,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:29,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:36:29,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 352 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 01:36:29,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:29,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:36:29,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:30,464 INFO L124 PetriNetUnfolderBase]: 2776/4450 cut-off events. [2024-06-28 01:36:30,464 INFO L125 PetriNetUnfolderBase]: For 8640/8640 co-relation queries the response was YES. [2024-06-28 01:36:30,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13250 conditions, 4450 events. 2776/4450 cut-off events. For 8640/8640 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26447 event pairs, 742 based on Foata normal form. 4/4439 useless extension candidates. Maximal degree in co-relation 13226. Up to 3962 conditions per place. [2024-06-28 01:36:30,485 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 79 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-28 01:36:30,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 104 transitions, 655 flow [2024-06-28 01:36:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:36:30,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 01:36:30,487 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 352 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:36:30,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 104 transitions, 655 flow [2024-06-28 01:36:30,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 585 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:30,495 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 362 flow [2024-06-28 01:36:30,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-28 01:36:30,496 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-28 01:36:30,496 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 362 flow [2024-06-28 01:36:30,496 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 01:36:30,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:30,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:36:30,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:30,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:30,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1256994759, now seen corresponding path program 1 times [2024-06-28 01:36:30,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:30,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952503221] [2024-06-28 01:36:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:30,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:31,092 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 01:36:31,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:31,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952503221] [2024-06-28 01:36:31,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952503221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:31,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:31,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:36:31,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581782754] [2024-06-28 01:36:31,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:31,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:36:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:36:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:36:31,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:36:31,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:31,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:31,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:36:31,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:31,597 INFO L124 PetriNetUnfolderBase]: 2778/4714 cut-off events. [2024-06-28 01:36:31,598 INFO L125 PetriNetUnfolderBase]: For 10412/10412 co-relation queries the response was YES. [2024-06-28 01:36:31,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13967 conditions, 4714 events. 2778/4714 cut-off events. For 10412/10412 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 30322 event pairs, 1095 based on Foata normal form. 1/4610 useless extension candidates. Maximal degree in co-relation 13941. Up to 4026 conditions per place. [2024-06-28 01:36:31,623 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 68 selfloop transitions, 9 changer transitions 0/89 dead transitions. [2024-06-28 01:36:31,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 89 transitions, 597 flow [2024-06-28 01:36:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:36:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:36:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-28 01:36:31,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:36:31,625 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 362 flow. Second operand 5 states and 126 transitions. [2024-06-28 01:36:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 89 transitions, 597 flow [2024-06-28 01:36:31,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 558 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:31,631 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 415 flow [2024-06-28 01:36:31,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-06-28 01:36:31,633 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 01:36:31,633 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 415 flow [2024-06-28 01:36:31,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:31,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:31,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:31,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:36:31,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:31,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:31,634 INFO L85 PathProgramCache]: Analyzing trace with hash 346094556, now seen corresponding path program 1 times [2024-06-28 01:36:31,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:31,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527008041] [2024-06-28 01:36:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:31,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:32,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:32,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527008041] [2024-06-28 01:36:32,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527008041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:32,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:32,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472326094] [2024-06-28 01:36:32,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:32,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:32,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:32,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 415 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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 01:36:32,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:32,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:32,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:32,941 INFO L124 PetriNetUnfolderBase]: 3210/5242 cut-off events. [2024-06-28 01:36:32,941 INFO L125 PetriNetUnfolderBase]: For 14792/14792 co-relation queries the response was YES. [2024-06-28 01:36:32,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16569 conditions, 5242 events. 3210/5242 cut-off events. For 14792/14792 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 32832 event pairs, 1280 based on Foata normal form. 1/5151 useless extension candidates. Maximal degree in co-relation 16541. Up to 4623 conditions per place. [2024-06-28 01:36:32,968 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 74 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2024-06-28 01:36:32,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 657 flow [2024-06-28 01:36:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:32,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:36:32,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:36:32,970 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 415 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:36:32,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 657 flow [2024-06-28 01:36:32,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 634 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:36:32,978 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 452 flow [2024-06-28 01:36:32,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-06-28 01:36:32,978 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 01:36:32,979 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 452 flow [2024-06-28 01:36:32,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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 01:36:32,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:32,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:32,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:36:32,979 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 01:36:32,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 389276246, now seen corresponding path program 1 times [2024-06-28 01:36:32,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:32,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758501038] [2024-06-28 01:36:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:32,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:33,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:33,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758501038] [2024-06-28 01:36:33,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758501038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:33,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:33,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:33,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372688019] [2024-06-28 01:36:33,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:33,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:33,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:33,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:33,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:33,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:33,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:33,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:34,611 INFO L124 PetriNetUnfolderBase]: 3632/5849 cut-off events. [2024-06-28 01:36:34,612 INFO L125 PetriNetUnfolderBase]: For 23642/23642 co-relation queries the response was YES. [2024-06-28 01:36:34,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19983 conditions, 5849 events. 3632/5849 cut-off events. For 23642/23642 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35924 event pairs, 673 based on Foata normal form. 16/5736 useless extension candidates. Maximal degree in co-relation 19953. Up to 4213 conditions per place. [2024-06-28 01:36:34,640 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 95 selfloop transitions, 24 changer transitions 0/131 dead transitions. [2024-06-28 01:36:34,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 888 flow [2024-06-28 01:36:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-28 01:36:34,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2024-06-28 01:36:34,642 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 452 flow. Second operand 7 states and 194 transitions. [2024-06-28 01:36:34,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 888 flow [2024-06-28 01:36:34,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 850 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:34,652 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 494 flow [2024-06-28 01:36:34,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-06-28 01:36:34,652 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-28 01:36:34,653 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 494 flow [2024-06-28 01:36:34,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:34,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:34,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:34,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:36:34,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:34,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash 389336696, now seen corresponding path program 2 times [2024-06-28 01:36:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091993154] [2024-06-28 01:36:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:35,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091993154] [2024-06-28 01:36:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091993154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:35,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447057329] [2024-06-28 01:36:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:35,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:35,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:35,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 494 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:35,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:35,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:35,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:36,332 INFO L124 PetriNetUnfolderBase]: 3742/6121 cut-off events. [2024-06-28 01:36:36,333 INFO L125 PetriNetUnfolderBase]: For 28005/28005 co-relation queries the response was YES. [2024-06-28 01:36:36,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21340 conditions, 6121 events. 3742/6121 cut-off events. For 28005/28005 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38640 event pairs, 1054 based on Foata normal form. 24/5996 useless extension candidates. Maximal degree in co-relation 21309. Up to 4908 conditions per place. [2024-06-28 01:36:36,368 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 90 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-06-28 01:36:36,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 864 flow [2024-06-28 01:36:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:36:36,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2024-06-28 01:36:36,370 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 494 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:36:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 864 flow [2024-06-28 01:36:36,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 127 transitions, 831 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:36,388 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 543 flow [2024-06-28 01:36:36,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2024-06-28 01:36:36,389 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 01:36:36,389 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 543 flow [2024-06-28 01:36:36,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:36,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:36,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:36:36,389 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 01:36:36,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1074711206, now seen corresponding path program 1 times [2024-06-28 01:36:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394895899] [2024-06-28 01:36:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:37,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:37,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394895899] [2024-06-28 01:36:37,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394895899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:37,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:37,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:36:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127738578] [2024-06-28 01:36:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:37,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:36:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:36:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:36:37,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:37,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 543 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:37,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:37,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:37,837 INFO L124 PetriNetUnfolderBase]: 3814/6229 cut-off events. [2024-06-28 01:36:37,837 INFO L125 PetriNetUnfolderBase]: For 30169/30169 co-relation queries the response was YES. [2024-06-28 01:36:37,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22406 conditions, 6229 events. 3814/6229 cut-off events. For 30169/30169 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 40176 event pairs, 1476 based on Foata normal form. 1/6098 useless extension candidates. Maximal degree in co-relation 22373. Up to 5474 conditions per place. [2024-06-28 01:36:37,876 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 87 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-28 01:36:37,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 112 transitions, 853 flow [2024-06-28 01:36:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:37,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:36:37,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-28 01:36:37,878 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 543 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:36:37,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 112 transitions, 853 flow [2024-06-28 01:36:37,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 791 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:37,900 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 586 flow [2024-06-28 01:36:37,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=586, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2024-06-28 01:36:37,901 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-06-28 01:36:37,901 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 586 flow [2024-06-28 01:36:37,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:37,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:37,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:36:37,902 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:37,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -352631008, now seen corresponding path program 1 times [2024-06-28 01:36:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570070652] [2024-06-28 01:36:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570070652] [2024-06-28 01:36:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570070652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:38,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:38,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241142413] [2024-06-28 01:36:38,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:38,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:38,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:38,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 586 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:38,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:38,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:38,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:39,766 INFO L124 PetriNetUnfolderBase]: 3857/6267 cut-off events. [2024-06-28 01:36:39,766 INFO L125 PetriNetUnfolderBase]: For 34090/34090 co-relation queries the response was YES. [2024-06-28 01:36:39,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23319 conditions, 6267 events. 3857/6267 cut-off events. For 34090/34090 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39688 event pairs, 1218 based on Foata normal form. 4/6122 useless extension candidates. Maximal degree in co-relation 23284. Up to 5263 conditions per place. [2024-06-28 01:36:39,812 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 97 selfloop transitions, 32 changer transitions 0/141 dead transitions. [2024-06-28 01:36:39,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 1023 flow [2024-06-28 01:36:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:39,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:36:39,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 01:36:39,814 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 586 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:36:39,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 1023 flow [2024-06-28 01:36:39,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 984 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:39,839 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 681 flow [2024-06-28 01:36:39,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2024-06-28 01:36:39,839 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-28 01:36:39,839 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 681 flow [2024-06-28 01:36:39,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:39,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:39,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:39,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:36:39,840 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:39,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1345919250, now seen corresponding path program 2 times [2024-06-28 01:36:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:39,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518050675] [2024-06-28 01:36:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:39,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:40,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518050675] [2024-06-28 01:36:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518050675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:40,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:40,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476630105] [2024-06-28 01:36:40,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:40,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:40,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:40,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 681 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:40,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:40,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:40,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:41,788 INFO L124 PetriNetUnfolderBase]: 3849/6257 cut-off events. [2024-06-28 01:36:41,789 INFO L125 PetriNetUnfolderBase]: For 39072/39072 co-relation queries the response was YES. [2024-06-28 01:36:41,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24322 conditions, 6257 events. 3849/6257 cut-off events. For 39072/39072 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 39608 event pairs, 1213 based on Foata normal form. 4/6114 useless extension candidates. Maximal degree in co-relation 24285. Up to 5251 conditions per place. [2024-06-28 01:36:41,825 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 98 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-06-28 01:36:41,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 148 transitions, 1164 flow [2024-06-28 01:36:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:36:41,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 01:36:41,826 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 681 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:36:41,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 148 transitions, 1164 flow [2024-06-28 01:36:41,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 1073 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:41,855 INFO L231 Difference]: Finished difference. Result has 98 places, 103 transitions, 778 flow [2024-06-28 01:36:41,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=778, PETRI_PLACES=98, PETRI_TRANSITIONS=103} [2024-06-28 01:36:41,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-06-28 01:36:41,856 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 103 transitions, 778 flow [2024-06-28 01:36:41,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:41,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:41,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:41,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:36:41,857 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:41,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1576135170, now seen corresponding path program 3 times [2024-06-28 01:36:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072312776] [2024-06-28 01:36:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:42,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:42,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072312776] [2024-06-28 01:36:42,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072312776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:42,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:42,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227484859] [2024-06-28 01:36:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:42,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:42,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:42,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 103 transitions, 778 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:42,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:42,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:42,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:43,772 INFO L124 PetriNetUnfolderBase]: 3934/6378 cut-off events. [2024-06-28 01:36:43,772 INFO L125 PetriNetUnfolderBase]: For 43706/43706 co-relation queries the response was YES. [2024-06-28 01:36:43,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25407 conditions, 6378 events. 3934/6378 cut-off events. For 43706/43706 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 40437 event pairs, 1015 based on Foata normal form. 4/6245 useless extension candidates. Maximal degree in co-relation 25368. Up to 5069 conditions per place. [2024-06-28 01:36:43,804 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 98 selfloop transitions, 45 changer transitions 0/155 dead transitions. [2024-06-28 01:36:43,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 1240 flow [2024-06-28 01:36:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 01:36:43,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-06-28 01:36:43,806 INFO L175 Difference]: Start difference. First operand has 98 places, 103 transitions, 778 flow. Second operand 8 states and 214 transitions. [2024-06-28 01:36:43,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 1240 flow [2024-06-28 01:36:43,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 155 transitions, 1170 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:43,833 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 862 flow [2024-06-28 01:36:43,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2024-06-28 01:36:43,834 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 01:36:43,834 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 862 flow [2024-06-28 01:36:43,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:43,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:43,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:43,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:36:43,834 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 01:36:43,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1086168806, now seen corresponding path program 2 times [2024-06-28 01:36:43,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:43,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278305168] [2024-06-28 01:36:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:44,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278305168] [2024-06-28 01:36:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278305168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:44,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:44,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:44,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861915719] [2024-06-28 01:36:44,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:44,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:44,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:44,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:44,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 862 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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 01:36:44,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:44,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:44,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:45,458 INFO L124 PetriNetUnfolderBase]: 3953/6495 cut-off events. [2024-06-28 01:36:45,458 INFO L125 PetriNetUnfolderBase]: For 48016/48028 co-relation queries the response was YES. [2024-06-28 01:36:45,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26066 conditions, 6495 events. 3953/6495 cut-off events. For 48016/48028 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 42378 event pairs, 1389 based on Foata normal form. 11/6364 useless extension candidates. Maximal degree in co-relation 26025. Up to 5667 conditions per place. [2024-06-28 01:36:45,496 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 98 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2024-06-28 01:36:45,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 1182 flow [2024-06-28 01:36:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:36:45,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:36:45,498 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 862 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:36:45,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 1182 flow [2024-06-28 01:36:45,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 1084 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:45,529 INFO L231 Difference]: Finished difference. Result has 105 places, 109 transitions, 850 flow [2024-06-28 01:36:45,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=105, PETRI_TRANSITIONS=109} [2024-06-28 01:36:45,530 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:36:45,530 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 109 transitions, 850 flow [2024-06-28 01:36:45,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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 01:36:45,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:45,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:45,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:36:45,531 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 01:36:45,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash -803261242, now seen corresponding path program 1 times [2024-06-28 01:36:45,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:45,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105557684] [2024-06-28 01:36:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:45,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:46,228 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 01:36:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105557684] [2024-06-28 01:36:46,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105557684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:46,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:46,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:46,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738949849] [2024-06-28 01:36:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:46,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:46,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:46,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:46,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:46,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:36:46,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 109 transitions, 850 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 01:36:46,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:46,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:36:46,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:47,027 INFO L124 PetriNetUnfolderBase]: 3557/6019 cut-off events. [2024-06-28 01:36:47,027 INFO L125 PetriNetUnfolderBase]: For 46327/46327 co-relation queries the response was YES. [2024-06-28 01:36:47,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24111 conditions, 6019 events. 3557/6019 cut-off events. For 46327/46327 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 40148 event pairs, 1207 based on Foata normal form. 2/5878 useless extension candidates. Maximal degree in co-relation 24069. Up to 5123 conditions per place. [2024-06-28 01:36:47,061 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 111 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2024-06-28 01:36:47,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 137 transitions, 1212 flow [2024-06-28 01:36:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:36:47,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:36:47,065 INFO L175 Difference]: Start difference. First operand has 105 places, 109 transitions, 850 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:36:47,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 137 transitions, 1212 flow [2024-06-28 01:36:47,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 137 transitions, 1148 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:47,113 INFO L231 Difference]: Finished difference. Result has 108 places, 116 transitions, 895 flow [2024-06-28 01:36:47,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=895, PETRI_PLACES=108, PETRI_TRANSITIONS=116} [2024-06-28 01:36:47,113 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 01:36:47,113 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 116 transitions, 895 flow [2024-06-28 01:36:47,115 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 01:36:47,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:47,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:47,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:36:47,123 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:47,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:47,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1086174758, now seen corresponding path program 2 times [2024-06-28 01:36:47,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:47,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485778434] [2024-06-28 01:36:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:47,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:47,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485778434] [2024-06-28 01:36:47,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485778434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:47,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:47,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303201258] [2024-06-28 01:36:47,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:47,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:47,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:47,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:47,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:36:47,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 116 transitions, 895 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 01:36:47,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:47,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:36:47,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:48,626 INFO L124 PetriNetUnfolderBase]: 3591/6231 cut-off events. [2024-06-28 01:36:48,626 INFO L125 PetriNetUnfolderBase]: For 51237/51243 co-relation queries the response was YES. [2024-06-28 01:36:48,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25343 conditions, 6231 events. 3591/6231 cut-off events. For 51237/51243 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 42572 event pairs, 1215 based on Foata normal form. 6/6041 useless extension candidates. Maximal degree in co-relation 25299. Up to 5144 conditions per place. [2024-06-28 01:36:48,666 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 109 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2024-06-28 01:36:48,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 140 transitions, 1245 flow [2024-06-28 01:36:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:36:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:36:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:36:48,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:36:48,667 INFO L175 Difference]: Start difference. First operand has 108 places, 116 transitions, 895 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:36:48,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 140 transitions, 1245 flow [2024-06-28 01:36:48,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 140 transitions, 1206 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:48,695 INFO L231 Difference]: Finished difference. Result has 111 places, 119 transitions, 934 flow [2024-06-28 01:36:48,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=934, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2024-06-28 01:36:48,696 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-28 01:36:48,696 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 934 flow [2024-06-28 01:36:48,697 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 01:36:48,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:48,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:48,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:36:48,697 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:48,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1086183686, now seen corresponding path program 1 times [2024-06-28 01:36:48,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058433224] [2024-06-28 01:36:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:49,402 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 01:36:49,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:49,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058433224] [2024-06-28 01:36:49,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058433224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:49,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:49,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:49,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542918433] [2024-06-28 01:36:49,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:49,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:49,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:49,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:49,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:49,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:49,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 934 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:49,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:49,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:49,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:50,269 INFO L124 PetriNetUnfolderBase]: 3823/6535 cut-off events. [2024-06-28 01:36:50,269 INFO L125 PetriNetUnfolderBase]: For 56168/56168 co-relation queries the response was YES. [2024-06-28 01:36:50,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27102 conditions, 6535 events. 3823/6535 cut-off events. For 56168/56168 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 44039 event pairs, 1322 based on Foata normal form. 1/6356 useless extension candidates. Maximal degree in co-relation 27057. Up to 5549 conditions per place. [2024-06-28 01:36:50,313 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 120 selfloop transitions, 15 changer transitions 0/146 dead transitions. [2024-06-28 01:36:50,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 146 transitions, 1310 flow [2024-06-28 01:36:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:36:50,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:36:50,315 INFO L175 Difference]: Start difference. First operand has 111 places, 119 transitions, 934 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:36:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 146 transitions, 1310 flow [2024-06-28 01:36:50,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 146 transitions, 1254 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:50,355 INFO L231 Difference]: Finished difference. Result has 114 places, 122 transitions, 956 flow [2024-06-28 01:36:50,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=956, PETRI_PLACES=114, PETRI_TRANSITIONS=122} [2024-06-28 01:36:50,356 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-28 01:36:50,356 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 122 transitions, 956 flow [2024-06-28 01:36:50,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:50,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:50,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:50,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:36:50,357 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:50,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:50,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1654218174, now seen corresponding path program 1 times [2024-06-28 01:36:50,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:50,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933050829] [2024-06-28 01:36:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:50,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:51,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:51,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933050829] [2024-06-28 01:36:51,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933050829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:51,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:51,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:51,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873019846] [2024-06-28 01:36:51,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:51,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:51,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:51,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:51,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 122 transitions, 956 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:51,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:51,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:51,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:51,978 INFO L124 PetriNetUnfolderBase]: 4056/6640 cut-off events. [2024-06-28 01:36:51,978 INFO L125 PetriNetUnfolderBase]: For 71029/71039 co-relation queries the response was YES. [2024-06-28 01:36:52,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29613 conditions, 6640 events. 4056/6640 cut-off events. For 71029/71039 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 43255 event pairs, 1378 based on Foata normal form. 11/6515 useless extension candidates. Maximal degree in co-relation 29567. Up to 5716 conditions per place. [2024-06-28 01:36:52,026 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 131 selfloop transitions, 29 changer transitions 0/172 dead transitions. [2024-06-28 01:36:52,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1519 flow [2024-06-28 01:36:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:36:52,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:36:52,027 INFO L175 Difference]: Start difference. First operand has 114 places, 122 transitions, 956 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:36:52,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1519 flow [2024-06-28 01:36:52,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 172 transitions, 1463 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:52,077 INFO L231 Difference]: Finished difference. Result has 118 places, 139 transitions, 1176 flow [2024-06-28 01:36:52,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1176, PETRI_PLACES=118, PETRI_TRANSITIONS=139} [2024-06-28 01:36:52,078 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 01:36:52,078 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 139 transitions, 1176 flow [2024-06-28 01:36:52,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:52,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:52,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:36:52,079 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 01:36:52,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1443987432, now seen corresponding path program 1 times [2024-06-28 01:36:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018425607] [2024-06-28 01:36:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:52,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:52,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018425607] [2024-06-28 01:36:52,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018425607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:52,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:52,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992869241] [2024-06-28 01:36:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:52,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:53,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:53,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 139 transitions, 1176 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:53,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:53,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:53,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:54,065 INFO L124 PetriNetUnfolderBase]: 4318/7064 cut-off events. [2024-06-28 01:36:54,065 INFO L125 PetriNetUnfolderBase]: For 84272/84276 co-relation queries the response was YES. [2024-06-28 01:36:54,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33331 conditions, 7064 events. 4318/7064 cut-off events. For 84272/84276 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 46475 event pairs, 1348 based on Foata normal form. 16/6941 useless extension candidates. Maximal degree in co-relation 33282. Up to 5422 conditions per place. [2024-06-28 01:36:54,123 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 138 selfloop transitions, 48 changer transitions 0/198 dead transitions. [2024-06-28 01:36:54,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 198 transitions, 1796 flow [2024-06-28 01:36:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:36:54,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2024-06-28 01:36:54,126 INFO L175 Difference]: Start difference. First operand has 118 places, 139 transitions, 1176 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:36:54,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 198 transitions, 1796 flow [2024-06-28 01:36:54,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 198 transitions, 1713 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:54,219 INFO L231 Difference]: Finished difference. Result has 125 places, 145 transitions, 1300 flow [2024-06-28 01:36:54,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1300, PETRI_PLACES=125, PETRI_TRANSITIONS=145} [2024-06-28 01:36:54,233 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 01:36:54,233 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 145 transitions, 1300 flow [2024-06-28 01:36:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:54,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:54,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:54,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:36:54,234 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:54,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1654517634, now seen corresponding path program 2 times [2024-06-28 01:36:54,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:54,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612918551] [2024-06-28 01:36:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:54,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:54,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612918551] [2024-06-28 01:36:54,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612918551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:54,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:54,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:36:54,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226714344] [2024-06-28 01:36:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:54,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:36:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:36:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:36:55,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:55,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 145 transitions, 1300 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:55,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:55,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:55,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:55,902 INFO L124 PetriNetUnfolderBase]: 4437/7325 cut-off events. [2024-06-28 01:36:55,902 INFO L125 PetriNetUnfolderBase]: For 92419/92429 co-relation queries the response was YES. [2024-06-28 01:36:55,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35578 conditions, 7325 events. 4437/7325 cut-off events. For 92419/92429 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 49033 event pairs, 1454 based on Foata normal form. 11/7183 useless extension candidates. Maximal degree in co-relation 35526. Up to 6161 conditions per place. [2024-06-28 01:36:55,966 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 138 selfloop transitions, 34 changer transitions 0/184 dead transitions. [2024-06-28 01:36:55,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 184 transitions, 1894 flow [2024-06-28 01:36:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 01:36:55,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 01:36:55,967 INFO L175 Difference]: Start difference. First operand has 125 places, 145 transitions, 1300 flow. Second operand 7 states and 180 transitions. [2024-06-28 01:36:55,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 184 transitions, 1894 flow [2024-06-28 01:36:56,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 184 transitions, 1821 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:56,047 INFO L231 Difference]: Finished difference. Result has 129 places, 153 transitions, 1431 flow [2024-06-28 01:36:56,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1431, PETRI_PLACES=129, PETRI_TRANSITIONS=153} [2024-06-28 01:36:56,048 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 01:36:56,048 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 153 transitions, 1431 flow [2024-06-28 01:36:56,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:56,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:56,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:56,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:36:56,049 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:56,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1043690031, now seen corresponding path program 1 times [2024-06-28 01:36:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001940455] [2024-06-28 01:36:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:56,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:56,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001940455] [2024-06-28 01:36:56,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001940455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:56,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:56,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:56,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525782491] [2024-06-28 01:36:56,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:56,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:56,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:36:56,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 153 transitions, 1431 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 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 01:36:56,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:56,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:36:56,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:57,799 INFO L124 PetriNetUnfolderBase]: 4704/7644 cut-off events. [2024-06-28 01:36:57,800 INFO L125 PetriNetUnfolderBase]: For 102352/102352 co-relation queries the response was YES. [2024-06-28 01:36:57,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37941 conditions, 7644 events. 4704/7644 cut-off events. For 102352/102352 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50366 event pairs, 1586 based on Foata normal form. 1/7494 useless extension candidates. Maximal degree in co-relation 37888. Up to 6805 conditions per place. [2024-06-28 01:36:57,862 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 16 changer transitions 0/184 dead transitions. [2024-06-28 01:36:57,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 184 transitions, 1911 flow [2024-06-28 01:36:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:36:57,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 01:36:57,865 INFO L175 Difference]: Start difference. First operand has 129 places, 153 transitions, 1431 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:36:57,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 184 transitions, 1911 flow [2024-06-28 01:36:57,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 184 transitions, 1837 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:57,954 INFO L231 Difference]: Finished difference. Result has 133 places, 156 transitions, 1449 flow [2024-06-28 01:36:57,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=133, PETRI_TRANSITIONS=156} [2024-06-28 01:36:57,955 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-28 01:36:57,955 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 156 transitions, 1449 flow [2024-06-28 01:36:57,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 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 01:36:57,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:57,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:57,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:36:57,956 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 01:36:57,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2147280508, now seen corresponding path program 2 times [2024-06-28 01:36:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:57,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7949425] [2024-06-28 01:36:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7949425] [2024-06-28 01:36:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7949425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:58,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:58,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310151311] [2024-06-28 01:36:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:58,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:58,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:58,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:36:58,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 156 transitions, 1449 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:58,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:58,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:36:58,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:59,972 INFO L124 PetriNetUnfolderBase]: 4509/7428 cut-off events. [2024-06-28 01:36:59,972 INFO L125 PetriNetUnfolderBase]: For 110663/110685 co-relation queries the response was YES. [2024-06-28 01:37:00,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37526 conditions, 7428 events. 4509/7428 cut-off events. For 110663/110685 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 49377 event pairs, 917 based on Foata normal form. 16/7277 useless extension candidates. Maximal degree in co-relation 37471. Up to 4898 conditions per place. [2024-06-28 01:37:00,039 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 141 selfloop transitions, 48 changer transitions 0/202 dead transitions. [2024-06-28 01:37:00,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 202 transitions, 1999 flow [2024-06-28 01:37:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:37:00,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2024-06-28 01:37:00,041 INFO L175 Difference]: Start difference. First operand has 133 places, 156 transitions, 1449 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:37:00,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 202 transitions, 1999 flow [2024-06-28 01:37:00,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 202 transitions, 1923 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:00,148 INFO L231 Difference]: Finished difference. Result has 135 places, 156 transitions, 1478 flow [2024-06-28 01:37:00,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1478, PETRI_PLACES=135, PETRI_TRANSITIONS=156} [2024-06-28 01:37:00,148 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:37:00,149 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 156 transitions, 1478 flow [2024-06-28 01:37:00,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:00,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:00,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:00,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:37:00,149 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 01:37:00,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 472640860, now seen corresponding path program 3 times [2024-06-28 01:37:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20184319] [2024-06-28 01:37:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:00,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20184319] [2024-06-28 01:37:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20184319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:00,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029801427] [2024-06-28 01:37:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:00,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:00,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:01,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:01,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 156 transitions, 1478 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:01,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:01,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:02,095 INFO L124 PetriNetUnfolderBase]: 4487/7339 cut-off events. [2024-06-28 01:37:02,095 INFO L125 PetriNetUnfolderBase]: For 114256/114272 co-relation queries the response was YES. [2024-06-28 01:37:02,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37708 conditions, 7339 events. 4487/7339 cut-off events. For 114256/114272 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 48303 event pairs, 767 based on Foata normal form. 16/7193 useless extension candidates. Maximal degree in co-relation 37652. Up to 4657 conditions per place. [2024-06-28 01:37:02,161 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 138 selfloop transitions, 45 changer transitions 0/196 dead transitions. [2024-06-28 01:37:02,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 196 transitions, 1970 flow [2024-06-28 01:37:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:37:02,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 01:37:02,163 INFO L175 Difference]: Start difference. First operand has 135 places, 156 transitions, 1478 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:37:02,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 196 transitions, 1970 flow [2024-06-28 01:37:02,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 196 transitions, 1849 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:02,253 INFO L231 Difference]: Finished difference. Result has 135 places, 155 transitions, 1419 flow [2024-06-28 01:37:02,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1419, PETRI_PLACES=135, PETRI_TRANSITIONS=155} [2024-06-28 01:37:02,253 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:37:02,254 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 155 transitions, 1419 flow [2024-06-28 01:37:02,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:02,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:02,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:02,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:37:02,254 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 01:37:02,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash -688058961, now seen corresponding path program 2 times [2024-06-28 01:37:02,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:02,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497469603] [2024-06-28 01:37:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497469603] [2024-06-28 01:37:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497469603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763481865] [2024-06-28 01:37:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:02,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:02,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 155 transitions, 1419 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:02,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:02,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:02,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:03,927 INFO L124 PetriNetUnfolderBase]: 4686/7979 cut-off events. [2024-06-28 01:37:03,927 INFO L125 PetriNetUnfolderBase]: For 109764/109781 co-relation queries the response was YES. [2024-06-28 01:37:03,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38917 conditions, 7979 events. 4686/7979 cut-off events. For 109764/109781 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 55178 event pairs, 1554 based on Foata normal form. 15/7749 useless extension candidates. Maximal degree in co-relation 38860. Up to 6717 conditions per place. [2024-06-28 01:37:03,985 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 147 selfloop transitions, 29 changer transitions 0/186 dead transitions. [2024-06-28 01:37:03,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 186 transitions, 2013 flow [2024-06-28 01:37:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:37:03,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:37:03,987 INFO L175 Difference]: Start difference. First operand has 135 places, 155 transitions, 1419 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:37:03,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 186 transitions, 2013 flow [2024-06-28 01:37:04,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 186 transitions, 1885 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:04,063 INFO L231 Difference]: Finished difference. Result has 136 places, 161 transitions, 1469 flow [2024-06-28 01:37:04,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1469, PETRI_PLACES=136, PETRI_TRANSITIONS=161} [2024-06-28 01:37:04,069 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-28 01:37:04,069 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 161 transitions, 1469 flow [2024-06-28 01:37:04,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:04,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:04,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:37:04,069 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 01:37:04,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash -688504431, now seen corresponding path program 3 times [2024-06-28 01:37:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:04,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606061244] [2024-06-28 01:37:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:04,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:04,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606061244] [2024-06-28 01:37:04,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606061244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:04,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336984630] [2024-06-28 01:37:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:04,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:04,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:04,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 161 transitions, 1469 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 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 01:37:04,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:04,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:04,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:05,791 INFO L124 PetriNetUnfolderBase]: 4683/7979 cut-off events. [2024-06-28 01:37:05,791 INFO L125 PetriNetUnfolderBase]: For 115473/115490 co-relation queries the response was YES. [2024-06-28 01:37:05,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38476 conditions, 7979 events. 4683/7979 cut-off events. For 115473/115490 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 55259 event pairs, 1556 based on Foata normal form. 15/7748 useless extension candidates. Maximal degree in co-relation 38419. Up to 6714 conditions per place. [2024-06-28 01:37:05,851 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 147 selfloop transitions, 28 changer transitions 0/185 dead transitions. [2024-06-28 01:37:05,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 185 transitions, 1901 flow [2024-06-28 01:37:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:37:05,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:37:05,852 INFO L175 Difference]: Start difference. First operand has 136 places, 161 transitions, 1469 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:37:05,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 185 transitions, 1901 flow [2024-06-28 01:37:05,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 185 transitions, 1795 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:05,932 INFO L231 Difference]: Finished difference. Result has 140 places, 161 transitions, 1425 flow [2024-06-28 01:37:05,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1425, PETRI_PLACES=140, PETRI_TRANSITIONS=161} [2024-06-28 01:37:05,934 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 01:37:05,934 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 161 transitions, 1425 flow [2024-06-28 01:37:05,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 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 01:37:05,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:05,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:05,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:37:05,935 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 01:37:05,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:05,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1664723454, now seen corresponding path program 3 times [2024-06-28 01:37:05,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:05,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184662801] [2024-06-28 01:37:05,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:05,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:06,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:06,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184662801] [2024-06-28 01:37:06,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184662801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:06,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:06,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:06,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947067015] [2024-06-28 01:37:06,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:06,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:06,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:06,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:06,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 161 transitions, 1425 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:06,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:06,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:06,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:07,620 INFO L124 PetriNetUnfolderBase]: 4567/7789 cut-off events. [2024-06-28 01:37:07,621 INFO L125 PetriNetUnfolderBase]: For 122266/122308 co-relation queries the response was YES. [2024-06-28 01:37:07,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38394 conditions, 7789 events. 4567/7789 cut-off events. For 122266/122308 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 53863 event pairs, 1464 based on Foata normal form. 9/7558 useless extension candidates. Maximal degree in co-relation 38335. Up to 6138 conditions per place. [2024-06-28 01:37:07,693 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 136 selfloop transitions, 47 changer transitions 0/198 dead transitions. [2024-06-28 01:37:07,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 198 transitions, 2133 flow [2024-06-28 01:37:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:37:07,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-28 01:37:07,695 INFO L175 Difference]: Start difference. First operand has 140 places, 161 transitions, 1425 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:37:07,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 198 transitions, 2133 flow [2024-06-28 01:37:07,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 198 transitions, 2059 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:07,880 INFO L231 Difference]: Finished difference. Result has 142 places, 169 transitions, 1597 flow [2024-06-28 01:37:07,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1597, PETRI_PLACES=142, PETRI_TRANSITIONS=169} [2024-06-28 01:37:07,880 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-28 01:37:07,881 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 169 transitions, 1597 flow [2024-06-28 01:37:07,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:07,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:07,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:07,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:37:07,881 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 01:37:07,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:07,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1471482100, now seen corresponding path program 1 times [2024-06-28 01:37:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587447363] [2024-06-28 01:37:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:07,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:08,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:08,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587447363] [2024-06-28 01:37:08,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587447363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:08,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:08,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:08,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109158863] [2024-06-28 01:37:08,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:08,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:08,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:08,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:37:08,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 169 transitions, 1597 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 01:37:08,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:08,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:37:08,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:09,847 INFO L124 PetriNetUnfolderBase]: 4073/6960 cut-off events. [2024-06-28 01:37:09,847 INFO L125 PetriNetUnfolderBase]: For 117376/117393 co-relation queries the response was YES. [2024-06-28 01:37:09,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36285 conditions, 6960 events. 4073/6960 cut-off events. For 117376/117393 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 47996 event pairs, 1273 based on Foata normal form. 6/6816 useless extension candidates. Maximal degree in co-relation 36224. Up to 5846 conditions per place. [2024-06-28 01:37:09,911 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 169 selfloop transitions, 17 changer transitions 0/202 dead transitions. [2024-06-28 01:37:09,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 202 transitions, 2132 flow [2024-06-28 01:37:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:37:09,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:37:09,913 INFO L175 Difference]: Start difference. First operand has 142 places, 169 transitions, 1597 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:37:09,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 202 transitions, 2132 flow [2024-06-28 01:37:10,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 202 transitions, 1984 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:10,030 INFO L231 Difference]: Finished difference. Result has 146 places, 176 transitions, 1601 flow [2024-06-28 01:37:10,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1601, PETRI_PLACES=146, PETRI_TRANSITIONS=176} [2024-06-28 01:37:10,031 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 01:37:10,031 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 176 transitions, 1601 flow [2024-06-28 01:37:10,031 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 01:37:10,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:10,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:10,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:37:10,032 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 01:37:10,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash -866373999, now seen corresponding path program 1 times [2024-06-28 01:37:10,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:10,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987437102] [2024-06-28 01:37:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:10,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:10,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:10,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987437102] [2024-06-28 01:37:10,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987437102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:10,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:10,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:10,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090308041] [2024-06-28 01:37:10,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:10,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:10,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:10,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:10,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:10,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 176 transitions, 1601 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:10,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:10,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:10,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:11,767 INFO L124 PetriNetUnfolderBase]: 4377/7306 cut-off events. [2024-06-28 01:37:11,767 INFO L125 PetriNetUnfolderBase]: For 121132/121132 co-relation queries the response was YES. [2024-06-28 01:37:11,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37442 conditions, 7306 events. 4377/7306 cut-off events. For 121132/121132 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 49377 event pairs, 1407 based on Foata normal form. 2/7165 useless extension candidates. Maximal degree in co-relation 37379. Up to 6309 conditions per place. [2024-06-28 01:37:11,836 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 179 selfloop transitions, 16 changer transitions 0/206 dead transitions. [2024-06-28 01:37:11,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 206 transitions, 2129 flow [2024-06-28 01:37:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:37:11,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:37:11,838 INFO L175 Difference]: Start difference. First operand has 146 places, 176 transitions, 1601 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:37:11,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 206 transitions, 2129 flow [2024-06-28 01:37:11,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 206 transitions, 2054 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:11,935 INFO L231 Difference]: Finished difference. Result has 149 places, 179 transitions, 1612 flow [2024-06-28 01:37:11,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1612, PETRI_PLACES=149, PETRI_TRANSITIONS=179} [2024-06-28 01:37:11,936 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 01:37:11,937 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 179 transitions, 1612 flow [2024-06-28 01:37:11,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:11,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:11,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:11,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:37:11,937 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 01:37:11,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash -688319919, now seen corresponding path program 2 times [2024-06-28 01:37:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327443124] [2024-06-28 01:37:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327443124] [2024-06-28 01:37:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327443124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:12,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:12,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:12,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645383712] [2024-06-28 01:37:12,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:12,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:12,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:12,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:12,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:12,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:12,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 179 transitions, 1612 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:12,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:12,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:12,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:13,784 INFO L124 PetriNetUnfolderBase]: 4436/7777 cut-off events. [2024-06-28 01:37:13,785 INFO L125 PetriNetUnfolderBase]: For 129294/129303 co-relation queries the response was YES. [2024-06-28 01:37:13,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39183 conditions, 7777 events. 4436/7777 cut-off events. For 129294/129303 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 55231 event pairs, 1401 based on Foata normal form. 8/7531 useless extension candidates. Maximal degree in co-relation 39119. Up to 6294 conditions per place. [2024-06-28 01:37:13,850 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 174 selfloop transitions, 28 changer transitions 0/213 dead transitions. [2024-06-28 01:37:13,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 213 transitions, 2286 flow [2024-06-28 01:37:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:37:13,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 01:37:13,852 INFO L175 Difference]: Start difference. First operand has 149 places, 179 transitions, 1612 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:37:13,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 213 transitions, 2286 flow [2024-06-28 01:37:13,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 213 transitions, 2222 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:13,960 INFO L231 Difference]: Finished difference. Result has 151 places, 185 transitions, 1712 flow [2024-06-28 01:37:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1712, PETRI_PLACES=151, PETRI_TRANSITIONS=185} [2024-06-28 01:37:13,961 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 01:37:13,961 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 185 transitions, 1712 flow [2024-06-28 01:37:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:13,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:13,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:37:13,962 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 01:37:13,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1884408059, now seen corresponding path program 3 times [2024-06-28 01:37:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:13,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106251778] [2024-06-28 01:37:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:13,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106251778] [2024-06-28 01:37:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106251778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:14,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525592870] [2024-06-28 01:37:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:14,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:14,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:14,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:14,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:14,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 185 transitions, 1712 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:14,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:14,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:14,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:15,582 INFO L124 PetriNetUnfolderBase]: 4430/7778 cut-off events. [2024-06-28 01:37:15,583 INFO L125 PetriNetUnfolderBase]: For 136646/136655 co-relation queries the response was YES. [2024-06-28 01:37:15,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39824 conditions, 7778 events. 4430/7778 cut-off events. For 136646/136655 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 55367 event pairs, 1392 based on Foata normal form. 8/7528 useless extension candidates. Maximal degree in co-relation 39759. Up to 6289 conditions per place. [2024-06-28 01:37:15,663 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 172 selfloop transitions, 29 changer transitions 0/212 dead transitions. [2024-06-28 01:37:15,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 212 transitions, 2226 flow [2024-06-28 01:37:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:37:15,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-28 01:37:15,664 INFO L175 Difference]: Start difference. First operand has 151 places, 185 transitions, 1712 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:37:15,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 212 transitions, 2226 flow [2024-06-28 01:37:15,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 212 transitions, 2126 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:15,893 INFO L231 Difference]: Finished difference. Result has 155 places, 185 transitions, 1676 flow [2024-06-28 01:37:15,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1676, PETRI_PLACES=155, PETRI_TRANSITIONS=185} [2024-06-28 01:37:15,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-28 01:37:15,894 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 185 transitions, 1676 flow [2024-06-28 01:37:15,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:15,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:15,894 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 01:37:15,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:37:15,894 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 01:37:15,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1996052605, now seen corresponding path program 1 times [2024-06-28 01:37:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:15,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641103357] [2024-06-28 01:37:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:15,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641103357] [2024-06-28 01:37:16,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641103357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:16,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:16,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:16,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379671529] [2024-06-28 01:37:16,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:16,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:16,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:16,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:16,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 185 transitions, 1676 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:16,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:16,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:16,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:17,739 INFO L124 PetriNetUnfolderBase]: 4913/7923 cut-off events. [2024-06-28 01:37:17,739 INFO L125 PetriNetUnfolderBase]: For 162638/162647 co-relation queries the response was YES. [2024-06-28 01:37:17,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43537 conditions, 7923 events. 4913/7923 cut-off events. For 162638/162647 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 51997 event pairs, 1616 based on Foata normal form. 9/7784 useless extension candidates. Maximal degree in co-relation 43470. Up to 6941 conditions per place. [2024-06-28 01:37:17,827 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 185 selfloop transitions, 33 changer transitions 0/228 dead transitions. [2024-06-28 01:37:17,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 228 transitions, 2306 flow [2024-06-28 01:37:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:37:17,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:37:17,829 INFO L175 Difference]: Start difference. First operand has 155 places, 185 transitions, 1676 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:37:17,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 228 transitions, 2306 flow [2024-06-28 01:37:17,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 2238 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:17,972 INFO L231 Difference]: Finished difference. Result has 157 places, 189 transitions, 1757 flow [2024-06-28 01:37:17,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1757, PETRI_PLACES=157, PETRI_TRANSITIONS=189} [2024-06-28 01:37:17,973 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-28 01:37:17,973 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 189 transitions, 1757 flow [2024-06-28 01:37:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:17,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:17,973 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 01:37:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:37:17,974 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 01:37:17,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -259715225, now seen corresponding path program 1 times [2024-06-28 01:37:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:17,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888624973] [2024-06-28 01:37:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888624973] [2024-06-28 01:37:18,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888624973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:18,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672442673] [2024-06-28 01:37:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:18,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:18,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:18,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:18,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 189 transitions, 1757 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:18,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:18,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:18,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:19,746 INFO L124 PetriNetUnfolderBase]: 4763/7801 cut-off events. [2024-06-28 01:37:19,747 INFO L125 PetriNetUnfolderBase]: For 177875/177920 co-relation queries the response was YES. [2024-06-28 01:37:19,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44589 conditions, 7801 events. 4763/7801 cut-off events. For 177875/177920 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 52362 event pairs, 1503 based on Foata normal form. 14/7659 useless extension candidates. Maximal degree in co-relation 44521. Up to 6637 conditions per place. [2024-06-28 01:37:19,823 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 176 selfloop transitions, 29 changer transitions 0/224 dead transitions. [2024-06-28 01:37:19,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 224 transitions, 2319 flow [2024-06-28 01:37:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:37:19,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-28 01:37:19,825 INFO L175 Difference]: Start difference. First operand has 157 places, 189 transitions, 1757 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:37:19,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 224 transitions, 2319 flow [2024-06-28 01:37:19,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 224 transitions, 2196 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:19,970 INFO L231 Difference]: Finished difference. Result has 158 places, 194 transitions, 1771 flow [2024-06-28 01:37:19,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1771, PETRI_PLACES=158, PETRI_TRANSITIONS=194} [2024-06-28 01:37:19,970 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-28 01:37:19,971 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 194 transitions, 1771 flow [2024-06-28 01:37:19,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:19,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:19,971 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 01:37:19,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:37:19,971 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 01:37:19,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2005339461, now seen corresponding path program 2 times [2024-06-28 01:37:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524291329] [2024-06-28 01:37:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524291329] [2024-06-28 01:37:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524291329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:20,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:20,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888450903] [2024-06-28 01:37:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:20,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:20,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:20,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 194 transitions, 1771 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:20,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:20,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:20,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:21,872 INFO L124 PetriNetUnfolderBase]: 4787/7839 cut-off events. [2024-06-28 01:37:21,873 INFO L125 PetriNetUnfolderBase]: For 183259/183292 co-relation queries the response was YES. [2024-06-28 01:37:21,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44886 conditions, 7839 events. 4787/7839 cut-off events. For 183259/183292 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 52675 event pairs, 1492 based on Foata normal form. 14/7699 useless extension candidates. Maximal degree in co-relation 44817. Up to 6498 conditions per place. [2024-06-28 01:37:21,958 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 168 selfloop transitions, 41 changer transitions 0/228 dead transitions. [2024-06-28 01:37:21,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 228 transitions, 2417 flow [2024-06-28 01:37:21,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:37:21,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-28 01:37:21,959 INFO L175 Difference]: Start difference. First operand has 158 places, 194 transitions, 1771 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:37:21,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 228 transitions, 2417 flow [2024-06-28 01:37:22,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 228 transitions, 2347 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:22,123 INFO L231 Difference]: Finished difference. Result has 162 places, 197 transitions, 1848 flow [2024-06-28 01:37:22,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1848, PETRI_PLACES=162, PETRI_TRANSITIONS=197} [2024-06-28 01:37:22,124 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-06-28 01:37:22,124 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 197 transitions, 1848 flow [2024-06-28 01:37:22,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:22,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:22,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:22,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:37:22,124 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 01:37:22,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2005348389, now seen corresponding path program 1 times [2024-06-28 01:37:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:22,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886280010] [2024-06-28 01:37:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886280010] [2024-06-28 01:37:22,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886280010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:22,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:22,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255520648] [2024-06-28 01:37:22,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:22,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:22,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:22,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:22,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:22,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 197 transitions, 1848 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:22,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:22,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:22,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:24,129 INFO L124 PetriNetUnfolderBase]: 5026/8114 cut-off events. [2024-06-28 01:37:24,130 INFO L125 PetriNetUnfolderBase]: For 186293/186293 co-relation queries the response was YES. [2024-06-28 01:37:24,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46115 conditions, 8114 events. 5026/8114 cut-off events. For 186293/186293 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 53503 event pairs, 1619 based on Foata normal form. 1/7961 useless extension candidates. Maximal degree in co-relation 46045. Up to 7222 conditions per place. [2024-06-28 01:37:24,198 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 204 selfloop transitions, 19 changer transitions 0/233 dead transitions. [2024-06-28 01:37:24,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 233 transitions, 2464 flow [2024-06-28 01:37:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:37:24,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-28 01:37:24,200 INFO L175 Difference]: Start difference. First operand has 162 places, 197 transitions, 1848 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:37:24,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 233 transitions, 2464 flow [2024-06-28 01:37:24,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 233 transitions, 2367 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:24,371 INFO L231 Difference]: Finished difference. Result has 166 places, 200 transitions, 1861 flow [2024-06-28 01:37:24,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1861, PETRI_PLACES=166, PETRI_TRANSITIONS=200} [2024-06-28 01:37:24,371 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-28 01:37:24,371 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 200 transitions, 1861 flow [2024-06-28 01:37:24,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:24,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:24,372 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 01:37:24,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:37:24,372 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 01:37:24,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:24,372 INFO L85 PathProgramCache]: Analyzing trace with hash -249547857, now seen corresponding path program 2 times [2024-06-28 01:37:24,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:24,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117955708] [2024-06-28 01:37:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:24,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:25,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:25,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117955708] [2024-06-28 01:37:25,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117955708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:25,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:25,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:25,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557730662] [2024-06-28 01:37:25,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:25,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:25,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:25,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:25,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:25,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:25,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 200 transitions, 1861 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:25,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:25,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:25,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:26,306 INFO L124 PetriNetUnfolderBase]: 5181/8357 cut-off events. [2024-06-28 01:37:26,306 INFO L125 PetriNetUnfolderBase]: For 200214/200223 co-relation queries the response was YES. [2024-06-28 01:37:26,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48194 conditions, 8357 events. 5181/8357 cut-off events. For 200214/200223 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 55386 event pairs, 1605 based on Foata normal form. 9/8206 useless extension candidates. Maximal degree in co-relation 48123. Up to 6912 conditions per place. [2024-06-28 01:37:26,396 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 187 selfloop transitions, 50 changer transitions 0/247 dead transitions. [2024-06-28 01:37:26,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 247 transitions, 2801 flow [2024-06-28 01:37:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:37:26,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:37:26,397 INFO L175 Difference]: Start difference. First operand has 166 places, 200 transitions, 1861 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:37:26,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 247 transitions, 2801 flow [2024-06-28 01:37:26,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 247 transitions, 2713 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:26,581 INFO L231 Difference]: Finished difference. Result has 169 places, 208 transitions, 2057 flow [2024-06-28 01:37:26,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2057, PETRI_PLACES=169, PETRI_TRANSITIONS=208} [2024-06-28 01:37:26,582 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-28 01:37:26,582 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 208 transitions, 2057 flow [2024-06-28 01:37:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:26,582 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 01:37:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:37:26,583 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 01:37:26,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2005335865, now seen corresponding path program 3 times [2024-06-28 01:37:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215909626] [2024-06-28 01:37:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215909626] [2024-06-28 01:37:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215909626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:27,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:27,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364752910] [2024-06-28 01:37:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:27,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:27,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:27,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:27,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:27,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:27,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 208 transitions, 2057 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:27,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:27,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:27,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:28,872 INFO L124 PetriNetUnfolderBase]: 5216/8428 cut-off events. [2024-06-28 01:37:28,872 INFO L125 PetriNetUnfolderBase]: For 219259/219268 co-relation queries the response was YES. [2024-06-28 01:37:28,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50463 conditions, 8428 events. 5216/8428 cut-off events. For 219259/219268 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 56074 event pairs, 1626 based on Foata normal form. 9/8275 useless extension candidates. Maximal degree in co-relation 50390. Up to 6945 conditions per place. [2024-06-28 01:37:28,955 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 185 selfloop transitions, 54 changer transitions 0/249 dead transitions. [2024-06-28 01:37:28,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 249 transitions, 2834 flow [2024-06-28 01:37:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:37:28,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:37:28,957 INFO L175 Difference]: Start difference. First operand has 169 places, 208 transitions, 2057 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:37:28,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 249 transitions, 2834 flow [2024-06-28 01:37:29,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 249 transitions, 2690 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:29,187 INFO L231 Difference]: Finished difference. Result has 173 places, 212 transitions, 2119 flow [2024-06-28 01:37:29,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2119, PETRI_PLACES=173, PETRI_TRANSITIONS=212} [2024-06-28 01:37:29,187 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-28 01:37:29,188 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 212 transitions, 2119 flow [2024-06-28 01:37:29,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:29,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:29,188 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 01:37:29,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:37:29,188 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 01:37:29,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:29,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1636412027, now seen corresponding path program 3 times [2024-06-28 01:37:29,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:29,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814602095] [2024-06-28 01:37:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:29,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:29,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:29,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814602095] [2024-06-28 01:37:29,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814602095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:29,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284382820] [2024-06-28 01:37:29,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:29,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:29,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:29,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 212 transitions, 2119 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:29,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:29,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:29,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:31,117 INFO L124 PetriNetUnfolderBase]: 4961/8120 cut-off events. [2024-06-28 01:37:31,117 INFO L125 PetriNetUnfolderBase]: For 226448/226489 co-relation queries the response was YES. [2024-06-28 01:37:31,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49426 conditions, 8120 events. 4961/8120 cut-off events. For 226448/226489 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54724 event pairs, 1576 based on Foata normal form. 16/7969 useless extension candidates. Maximal degree in co-relation 49351. Up to 6877 conditions per place. [2024-06-28 01:37:31,197 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 188 selfloop transitions, 29 changer transitions 0/239 dead transitions. [2024-06-28 01:37:31,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 239 transitions, 2633 flow [2024-06-28 01:37:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:37:31,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:37:31,200 INFO L175 Difference]: Start difference. First operand has 173 places, 212 transitions, 2119 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:37:31,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 239 transitions, 2633 flow [2024-06-28 01:37:31,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 239 transitions, 2473 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:31,448 INFO L231 Difference]: Finished difference. Result has 175 places, 212 transitions, 2023 flow [2024-06-28 01:37:31,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2023, PETRI_PLACES=175, PETRI_TRANSITIONS=212} [2024-06-28 01:37:31,448 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-28 01:37:31,448 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 212 transitions, 2023 flow [2024-06-28 01:37:31,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:31,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:31,449 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 01:37:31,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:37:31,449 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 01:37:31,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1160075301, now seen corresponding path program 4 times [2024-06-28 01:37:31,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:31,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102360393] [2024-06-28 01:37:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:32,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102360393] [2024-06-28 01:37:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102360393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:32,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:32,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:32,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069286565] [2024-06-28 01:37:32,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:32,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:32,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:32,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:32,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:32,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:32,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 212 transitions, 2023 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:32,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:32,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:32,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:33,393 INFO L124 PetriNetUnfolderBase]: 5040/8223 cut-off events. [2024-06-28 01:37:33,393 INFO L125 PetriNetUnfolderBase]: For 235853/235968 co-relation queries the response was YES. [2024-06-28 01:37:33,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49933 conditions, 8223 events. 5040/8223 cut-off events. For 235853/235968 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 55492 event pairs, 1534 based on Foata normal form. 16/8045 useless extension candidates. Maximal degree in co-relation 49857. Up to 6892 conditions per place. [2024-06-28 01:37:33,484 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 182 selfloop transitions, 38 changer transitions 0/242 dead transitions. [2024-06-28 01:37:33,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 242 transitions, 2611 flow [2024-06-28 01:37:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:37:33,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:37:33,485 INFO L175 Difference]: Start difference. First operand has 175 places, 212 transitions, 2023 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:37:33,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 242 transitions, 2611 flow [2024-06-28 01:37:33,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 242 transitions, 2474 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:33,717 INFO L231 Difference]: Finished difference. Result has 174 places, 215 transitions, 2026 flow [2024-06-28 01:37:33,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2026, PETRI_PLACES=174, PETRI_TRANSITIONS=215} [2024-06-28 01:37:33,718 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-28 01:37:33,718 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 215 transitions, 2026 flow [2024-06-28 01:37:33,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:33,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:33,719 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 01:37:33,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:37:33,719 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 01:37:33,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash 136905093, now seen corresponding path program 5 times [2024-06-28 01:37:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:33,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341549671] [2024-06-28 01:37:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:34,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341549671] [2024-06-28 01:37:34,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341549671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:34,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:34,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53514836] [2024-06-28 01:37:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:34,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:34,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:34,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:34,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 215 transitions, 2026 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:34,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:34,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:34,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:35,495 INFO L124 PetriNetUnfolderBase]: 5135/8677 cut-off events. [2024-06-28 01:37:35,495 INFO L125 PetriNetUnfolderBase]: For 246323/246545 co-relation queries the response was YES. [2024-06-28 01:37:35,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51098 conditions, 8677 events. 5135/8677 cut-off events. For 246323/246545 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 60667 event pairs, 1516 based on Foata normal form. 15/8385 useless extension candidates. Maximal degree in co-relation 51021. Up to 6698 conditions per place. [2024-06-28 01:37:35,600 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 163 selfloop transitions, 61 changer transitions 0/246 dead transitions. [2024-06-28 01:37:35,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 246 transitions, 2726 flow [2024-06-28 01:37:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:37:35,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-28 01:37:35,621 INFO L175 Difference]: Start difference. First operand has 174 places, 215 transitions, 2026 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:37:35,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 246 transitions, 2726 flow [2024-06-28 01:37:35,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 246 transitions, 2618 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:35,866 INFO L231 Difference]: Finished difference. Result has 176 places, 218 transitions, 2104 flow [2024-06-28 01:37:35,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2104, PETRI_PLACES=176, PETRI_TRANSITIONS=218} [2024-06-28 01:37:35,867 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-28 01:37:35,867 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 218 transitions, 2104 flow [2024-06-28 01:37:35,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:35,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:35,867 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 01:37:35,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:37:35,867 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 01:37:35,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash 131191173, now seen corresponding path program 6 times [2024-06-28 01:37:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849556676] [2024-06-28 01:37:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:35,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:36,484 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 01:37:36,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:36,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849556676] [2024-06-28 01:37:36,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849556676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:36,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:36,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:36,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607160888] [2024-06-28 01:37:36,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:36,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:36,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:36,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:36,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 218 transitions, 2104 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:36,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:36,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:36,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:37,757 INFO L124 PetriNetUnfolderBase]: 5115/8641 cut-off events. [2024-06-28 01:37:37,757 INFO L125 PetriNetUnfolderBase]: For 251695/251917 co-relation queries the response was YES. [2024-06-28 01:37:37,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51065 conditions, 8641 events. 5115/8641 cut-off events. For 251695/251917 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 60540 event pairs, 1503 based on Foata normal form. 17/8351 useless extension candidates. Maximal degree in co-relation 50987. Up to 6681 conditions per place. [2024-06-28 01:37:37,845 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 166 selfloop transitions, 57 changer transitions 0/245 dead transitions. [2024-06-28 01:37:37,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 245 transitions, 2662 flow [2024-06-28 01:37:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:37:37,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-28 01:37:37,846 INFO L175 Difference]: Start difference. First operand has 176 places, 218 transitions, 2104 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:37:37,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 245 transitions, 2662 flow [2024-06-28 01:37:38,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 245 transitions, 2475 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:38,074 INFO L231 Difference]: Finished difference. Result has 179 places, 218 transitions, 2039 flow [2024-06-28 01:37:38,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2039, PETRI_PLACES=179, PETRI_TRANSITIONS=218} [2024-06-28 01:37:38,075 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-28 01:37:38,075 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 218 transitions, 2039 flow [2024-06-28 01:37:38,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:38,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:38,076 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 01:37:38,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:37:38,076 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 01:37:38,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 131187577, now seen corresponding path program 4 times [2024-06-28 01:37:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:38,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698343099] [2024-06-28 01:37:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:38,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:38,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:38,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698343099] [2024-06-28 01:37:38,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698343099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:38,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:38,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522657271] [2024-06-28 01:37:38,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:38,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:38,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:38,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:38,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 218 transitions, 2039 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:38,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:38,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:38,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:40,050 INFO L124 PetriNetUnfolderBase]: 5400/9146 cut-off events. [2024-06-28 01:37:40,050 INFO L125 PetriNetUnfolderBase]: For 254919/254928 co-relation queries the response was YES. [2024-06-28 01:37:40,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52970 conditions, 9146 events. 5400/9146 cut-off events. For 254919/254928 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 63891 event pairs, 1649 based on Foata normal form. 9/8873 useless extension candidates. Maximal degree in co-relation 52891. Up to 6631 conditions per place. [2024-06-28 01:37:40,145 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 170 selfloop transitions, 86 changer transitions 0/266 dead transitions. [2024-06-28 01:37:40,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 266 transitions, 3207 flow [2024-06-28 01:37:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:37:40,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:37:40,146 INFO L175 Difference]: Start difference. First operand has 179 places, 218 transitions, 2039 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:37:40,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 266 transitions, 3207 flow [2024-06-28 01:37:40,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 266 transitions, 3066 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:37:40,370 INFO L231 Difference]: Finished difference. Result has 181 places, 230 transitions, 2369 flow [2024-06-28 01:37:40,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2369, PETRI_PLACES=181, PETRI_TRANSITIONS=230} [2024-06-28 01:37:40,370 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-28 01:37:40,371 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 230 transitions, 2369 flow [2024-06-28 01:37:40,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:40,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:40,371 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 01:37:40,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:37:40,371 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:40,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash 145484901, now seen corresponding path program 2 times [2024-06-28 01:37:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283156619] [2024-06-28 01:37:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:41,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:41,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283156619] [2024-06-28 01:37:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283156619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:41,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872211232] [2024-06-28 01:37:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:41,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:41,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:41,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:41,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:41,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 230 transitions, 2369 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:41,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:41,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:41,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:42,534 INFO L124 PetriNetUnfolderBase]: 5422/9288 cut-off events. [2024-06-28 01:37:42,534 INFO L125 PetriNetUnfolderBase]: For 275146/275161 co-relation queries the response was YES. [2024-06-28 01:37:42,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55330 conditions, 9288 events. 5422/9288 cut-off events. For 275146/275161 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 66110 event pairs, 1687 based on Foata normal form. 13/8989 useless extension candidates. Maximal degree in co-relation 55249. Up to 7665 conditions per place. [2024-06-28 01:37:42,635 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 219 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2024-06-28 01:37:42,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 268 transitions, 3243 flow [2024-06-28 01:37:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:37:42,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-28 01:37:42,637 INFO L175 Difference]: Start difference. First operand has 181 places, 230 transitions, 2369 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:37:42,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 268 transitions, 3243 flow [2024-06-28 01:37:42,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 268 transitions, 3011 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:42,924 INFO L231 Difference]: Finished difference. Result has 186 places, 238 transitions, 2403 flow [2024-06-28 01:37:42,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2403, PETRI_PLACES=186, PETRI_TRANSITIONS=238} [2024-06-28 01:37:42,925 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-28 01:37:42,925 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 238 transitions, 2403 flow [2024-06-28 01:37:42,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:42,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:42,925 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 01:37:42,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:37:42,926 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:42,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash 145009237, now seen corresponding path program 5 times [2024-06-28 01:37:42,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:42,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708531099] [2024-06-28 01:37:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:42,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:43,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708531099] [2024-06-28 01:37:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708531099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:43,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:43,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:43,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055833711] [2024-06-28 01:37:43,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:43,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:43,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:43,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:43,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:43,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 238 transitions, 2403 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:43,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:43,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:43,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:45,100 INFO L124 PetriNetUnfolderBase]: 5557/9350 cut-off events. [2024-06-28 01:37:45,101 INFO L125 PetriNetUnfolderBase]: For 282612/282621 co-relation queries the response was YES. [2024-06-28 01:37:45,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55714 conditions, 9350 events. 5557/9350 cut-off events. For 282612/282621 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 65133 event pairs, 1608 based on Foata normal form. 9/9082 useless extension candidates. Maximal degree in co-relation 55631. Up to 6764 conditions per place. [2024-06-28 01:37:45,197 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 176 selfloop transitions, 95 changer transitions 0/281 dead transitions. [2024-06-28 01:37:45,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 281 transitions, 3418 flow [2024-06-28 01:37:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:37:45,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:37:45,198 INFO L175 Difference]: Start difference. First operand has 186 places, 238 transitions, 2403 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:37:45,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 281 transitions, 3418 flow [2024-06-28 01:37:45,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 281 transitions, 3302 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:45,573 INFO L231 Difference]: Finished difference. Result has 191 places, 246 transitions, 2651 flow [2024-06-28 01:37:45,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2651, PETRI_PLACES=191, PETRI_TRANSITIONS=246} [2024-06-28 01:37:45,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-28 01:37:45,574 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 246 transitions, 2651 flow [2024-06-28 01:37:45,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:45,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:45,575 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 01:37:45,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:37:45,575 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:45,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash 145009671, now seen corresponding path program 3 times [2024-06-28 01:37:45,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:45,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76111677] [2024-06-28 01:37:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:45,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:46,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76111677] [2024-06-28 01:37:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76111677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:46,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044457189] [2024-06-28 01:37:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:46,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:46,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 246 transitions, 2651 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:46,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:46,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:46,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:47,809 INFO L124 PetriNetUnfolderBase]: 5574/9540 cut-off events. [2024-06-28 01:37:47,809 INFO L125 PetriNetUnfolderBase]: For 291074/291089 co-relation queries the response was YES. [2024-06-28 01:37:47,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57246 conditions, 9540 events. 5574/9540 cut-off events. For 291074/291089 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 68097 event pairs, 1719 based on Foata normal form. 13/9232 useless extension candidates. Maximal degree in co-relation 57160. Up to 7866 conditions per place. [2024-06-28 01:37:47,897 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 229 selfloop transitions, 40 changer transitions 0/279 dead transitions. [2024-06-28 01:37:47,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 279 transitions, 3460 flow [2024-06-28 01:37:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:37:47,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:37:47,898 INFO L175 Difference]: Start difference. First operand has 191 places, 246 transitions, 2651 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:37:47,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 279 transitions, 3460 flow [2024-06-28 01:37:48,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 279 transitions, 3259 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:48,249 INFO L231 Difference]: Finished difference. Result has 195 places, 249 transitions, 2605 flow [2024-06-28 01:37:48,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2605, PETRI_PLACES=195, PETRI_TRANSITIONS=249} [2024-06-28 01:37:48,249 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 141 predicate places. [2024-06-28 01:37:48,250 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 249 transitions, 2605 flow [2024-06-28 01:37:48,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:48,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:48,250 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 01:37:48,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:37:48,250 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:48,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash 131200101, now seen corresponding path program 4 times [2024-06-28 01:37:48,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:48,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167814588] [2024-06-28 01:37:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:48,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:48,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167814588] [2024-06-28 01:37:48,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167814588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:48,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:48,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:48,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825848525] [2024-06-28 01:37:48,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:48,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:48,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:49,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:49,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 249 transitions, 2605 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:49,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:49,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:49,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:50,283 INFO L124 PetriNetUnfolderBase]: 5571/9535 cut-off events. [2024-06-28 01:37:50,283 INFO L125 PetriNetUnfolderBase]: For 295190/295205 co-relation queries the response was YES. [2024-06-28 01:37:50,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56401 conditions, 9535 events. 5571/9535 cut-off events. For 295190/295205 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 68060 event pairs, 1717 based on Foata normal form. 13/9230 useless extension candidates. Maximal degree in co-relation 56314. Up to 7863 conditions per place. [2024-06-28 01:37:50,392 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 229 selfloop transitions, 40 changer transitions 0/279 dead transitions. [2024-06-28 01:37:50,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 279 transitions, 3262 flow [2024-06-28 01:37:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:37:50,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:37:50,393 INFO L175 Difference]: Start difference. First operand has 195 places, 249 transitions, 2605 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:37:50,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 279 transitions, 3262 flow [2024-06-28 01:37:50,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 279 transitions, 3102 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:50,767 INFO L231 Difference]: Finished difference. Result has 198 places, 250 transitions, 2540 flow [2024-06-28 01:37:50,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2540, PETRI_PLACES=198, PETRI_TRANSITIONS=250} [2024-06-28 01:37:50,767 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-28 01:37:50,768 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 250 transitions, 2540 flow [2024-06-28 01:37:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:50,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:50,768 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 01:37:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:37:50,768 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 01:37:50,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash 131199667, now seen corresponding path program 6 times [2024-06-28 01:37:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162553371] [2024-06-28 01:37:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:51,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:51,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162553371] [2024-06-28 01:37:51,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162553371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:51,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:51,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110904287] [2024-06-28 01:37:51,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:51,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:51,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:37:51,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 250 transitions, 2540 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:51,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:51,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:37:51,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:52,866 INFO L124 PetriNetUnfolderBase]: 5566/9408 cut-off events. [2024-06-28 01:37:52,866 INFO L125 PetriNetUnfolderBase]: For 299677/299686 co-relation queries the response was YES. [2024-06-28 01:37:52,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56011 conditions, 9408 events. 5566/9408 cut-off events. For 299677/299686 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 65919 event pairs, 1652 based on Foata normal form. 9/9132 useless extension candidates. Maximal degree in co-relation 55923. Up to 6781 conditions per place. [2024-06-28 01:37:52,980 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 187 selfloop transitions, 89 changer transitions 0/286 dead transitions. [2024-06-28 01:37:52,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 286 transitions, 3522 flow [2024-06-28 01:37:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:37:52,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:37:52,982 INFO L175 Difference]: Start difference. First operand has 198 places, 250 transitions, 2540 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:37:52,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 286 transitions, 3522 flow [2024-06-28 01:37:53,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 286 transitions, 3398 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:53,339 INFO L231 Difference]: Finished difference. Result has 201 places, 250 transitions, 2602 flow [2024-06-28 01:37:53,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2602, PETRI_PLACES=201, PETRI_TRANSITIONS=250} [2024-06-28 01:37:53,339 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-06-28 01:37:53,339 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 250 transitions, 2602 flow [2024-06-28 01:37:53,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:53,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:53,340 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 01:37:53,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:37:53,340 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 01:37:53,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1628694205, now seen corresponding path program 1 times [2024-06-28 01:37:53,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:53,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225998522] [2024-06-28 01:37:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:54,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:54,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225998522] [2024-06-28 01:37:54,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225998522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:54,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:54,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:54,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613813143] [2024-06-28 01:37:54,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:54,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:54,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:54,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:54,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:54,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:54,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 250 transitions, 2602 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:37:54,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:54,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:54,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:55,647 INFO L124 PetriNetUnfolderBase]: 5258/8690 cut-off events. [2024-06-28 01:37:55,648 INFO L125 PetriNetUnfolderBase]: For 305706/305710 co-relation queries the response was YES. [2024-06-28 01:37:55,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54577 conditions, 8690 events. 5258/8690 cut-off events. For 305706/305710 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 59858 event pairs, 1611 based on Foata normal form. 1/8512 useless extension candidates. Maximal degree in co-relation 54488. Up to 7470 conditions per place. [2024-06-28 01:37:55,756 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 248 selfloop transitions, 20 changer transitions 0/284 dead transitions. [2024-06-28 01:37:55,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 284 transitions, 3294 flow [2024-06-28 01:37:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:37:55,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 01:37:55,757 INFO L175 Difference]: Start difference. First operand has 201 places, 250 transitions, 2602 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:37:55,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 284 transitions, 3294 flow [2024-06-28 01:37:56,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 284 transitions, 3034 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:37:56,088 INFO L231 Difference]: Finished difference. Result has 200 places, 253 transitions, 2456 flow [2024-06-28 01:37:56,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2456, PETRI_PLACES=200, PETRI_TRANSITIONS=253} [2024-06-28 01:37:56,088 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 01:37:56,089 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 253 transitions, 2456 flow [2024-06-28 01:37:56,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:37:56,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:56,089 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 01:37:56,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:37:56,090 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 01:37:56,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:56,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1087789211, now seen corresponding path program 1 times [2024-06-28 01:37:56,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:56,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476659001] [2024-06-28 01:37:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:56,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:56,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476659001] [2024-06-28 01:37:56,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476659001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:56,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:56,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:56,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239371649] [2024-06-28 01:37:56,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:56,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:56,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:56,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:56,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 253 transitions, 2456 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:37:56,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:56,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:56,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:58,352 INFO L124 PetriNetUnfolderBase]: 5282/8737 cut-off events. [2024-06-28 01:37:58,353 INFO L125 PetriNetUnfolderBase]: For 318992/318996 co-relation queries the response was YES. [2024-06-28 01:37:58,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54355 conditions, 8737 events. 5282/8737 cut-off events. For 318992/318996 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 60311 event pairs, 1583 based on Foata normal form. 4/8563 useless extension candidates. Maximal degree in co-relation 54267. Up to 7459 conditions per place. [2024-06-28 01:37:58,442 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 254 selfloop transitions, 19 changer transitions 0/289 dead transitions. [2024-06-28 01:37:58,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 289 transitions, 3182 flow [2024-06-28 01:37:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:37:58,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:37:58,443 INFO L175 Difference]: Start difference. First operand has 200 places, 253 transitions, 2456 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:37:58,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 289 transitions, 3182 flow [2024-06-28 01:37:58,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 289 transitions, 3090 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:58,767 INFO L231 Difference]: Finished difference. Result has 202 places, 256 transitions, 2468 flow [2024-06-28 01:37:58,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2468, PETRI_PLACES=202, PETRI_TRANSITIONS=256} [2024-06-28 01:37:58,768 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-28 01:37:58,768 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 256 transitions, 2468 flow [2024-06-28 01:37:58,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:37:58,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:58,768 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 01:37:58,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:37:58,769 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 01:37:58,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash 145194183, now seen corresponding path program 2 times [2024-06-28 01:37:58,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:58,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657611006] [2024-06-28 01:37:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:59,462 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 01:37:59,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:59,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657611006] [2024-06-28 01:37:59,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657611006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:59,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:59,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613579901] [2024-06-28 01:37:59,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:59,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:59,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:59,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:59,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:59,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:59,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 256 transitions, 2468 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:37:59,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:59,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:59,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:00,889 INFO L124 PetriNetUnfolderBase]: 5501/9505 cut-off events. [2024-06-28 01:38:00,889 INFO L125 PetriNetUnfolderBase]: For 349311/349348 co-relation queries the response was YES. [2024-06-28 01:38:00,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58073 conditions, 9505 events. 5501/9505 cut-off events. For 349311/349348 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 68956 event pairs, 1558 based on Foata normal form. 10/9202 useless extension candidates. Maximal degree in co-relation 57984. Up to 7541 conditions per place. [2024-06-28 01:38:01,019 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 241 selfloop transitions, 43 changer transitions 0/300 dead transitions. [2024-06-28 01:38:01,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 300 transitions, 3562 flow [2024-06-28 01:38:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:38:01,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:38:01,025 INFO L175 Difference]: Start difference. First operand has 202 places, 256 transitions, 2468 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:38:01,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 300 transitions, 3562 flow [2024-06-28 01:38:01,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 300 transitions, 3480 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:01,452 INFO L231 Difference]: Finished difference. Result has 204 places, 265 transitions, 2664 flow [2024-06-28 01:38:01,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2386, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2664, PETRI_PLACES=204, PETRI_TRANSITIONS=265} [2024-06-28 01:38:01,454 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-28 01:38:01,454 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 265 transitions, 2664 flow [2024-06-28 01:38:01,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:01,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:01,454 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 01:38:01,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:38:01,454 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 01:38:01,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash 145490853, now seen corresponding path program 3 times [2024-06-28 01:38:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:01,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416848231] [2024-06-28 01:38:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:02,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416848231] [2024-06-28 01:38:02,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416848231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:02,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:02,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:02,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926398251] [2024-06-28 01:38:02,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:02,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:02,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 265 transitions, 2664 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:02,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:02,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:02,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:03,725 INFO L124 PetriNetUnfolderBase]: 5489/9484 cut-off events. [2024-06-28 01:38:03,726 INFO L125 PetriNetUnfolderBase]: For 358597/358634 co-relation queries the response was YES. [2024-06-28 01:38:03,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58664 conditions, 9484 events. 5489/9484 cut-off events. For 358597/358634 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 68756 event pairs, 1553 based on Foata normal form. 10/9184 useless extension candidates. Maximal degree in co-relation 58574. Up to 7533 conditions per place. [2024-06-28 01:38:03,847 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 238 selfloop transitions, 45 changer transitions 0/299 dead transitions. [2024-06-28 01:38:03,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 299 transitions, 3476 flow [2024-06-28 01:38:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:38:03,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:38:03,848 INFO L175 Difference]: Start difference. First operand has 204 places, 265 transitions, 2664 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:38:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 299 transitions, 3476 flow [2024-06-28 01:38:04,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 299 transitions, 3348 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:04,265 INFO L231 Difference]: Finished difference. Result has 209 places, 265 transitions, 2633 flow [2024-06-28 01:38:04,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2633, PETRI_PLACES=209, PETRI_TRANSITIONS=265} [2024-06-28 01:38:04,266 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-28 01:38:04,266 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 265 transitions, 2633 flow [2024-06-28 01:38:04,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:04,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:04,266 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 01:38:04,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:38:04,267 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 01:38:04,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 136919973, now seen corresponding path program 4 times [2024-06-28 01:38:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:04,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699841577] [2024-06-28 01:38:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:04,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:05,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699841577] [2024-06-28 01:38:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699841577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:05,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:05,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967079302] [2024-06-28 01:38:05,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:05,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:05,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:05,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:05,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 265 transitions, 2633 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:05,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:05,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:05,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:06,451 INFO L124 PetriNetUnfolderBase]: 5441/9402 cut-off events. [2024-06-28 01:38:06,452 INFO L125 PetriNetUnfolderBase]: For 357223/357260 co-relation queries the response was YES. [2024-06-28 01:38:06,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57908 conditions, 9402 events. 5441/9402 cut-off events. For 357223/357260 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 68121 event pairs, 1574 based on Foata normal form. 10/9101 useless extension candidates. Maximal degree in co-relation 57816. Up to 7495 conditions per place. [2024-06-28 01:38:06,577 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 240 selfloop transitions, 42 changer transitions 0/298 dead transitions. [2024-06-28 01:38:06,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 298 transitions, 3339 flow [2024-06-28 01:38:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:38:06,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:38:06,579 INFO L175 Difference]: Start difference. First operand has 209 places, 265 transitions, 2633 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:38:06,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 298 transitions, 3339 flow [2024-06-28 01:38:06,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 298 transitions, 3219 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:06,948 INFO L231 Difference]: Finished difference. Result has 211 places, 265 transitions, 2603 flow [2024-06-28 01:38:06,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2603, PETRI_PLACES=211, PETRI_TRANSITIONS=265} [2024-06-28 01:38:06,948 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 157 predicate places. [2024-06-28 01:38:06,948 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 265 transitions, 2603 flow [2024-06-28 01:38:06,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:06,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:06,949 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 01:38:06,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:38:06,949 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 01:38:06,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash 145501765, now seen corresponding path program 1 times [2024-06-28 01:38:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:06,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269312046] [2024-06-28 01:38:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:07,910 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 01:38:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269312046] [2024-06-28 01:38:07,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269312046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:07,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:07,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254926066] [2024-06-28 01:38:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:07,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:07,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:07,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 265 transitions, 2603 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:07,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:07,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:07,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:09,439 INFO L124 PetriNetUnfolderBase]: 5807/9627 cut-off events. [2024-06-28 01:38:09,439 INFO L125 PetriNetUnfolderBase]: For 361755/361755 co-relation queries the response was YES. [2024-06-28 01:38:09,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59664 conditions, 9627 events. 5807/9627 cut-off events. For 361755/361755 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 66791 event pairs, 1738 based on Foata normal form. 1/9378 useless extension candidates. Maximal degree in co-relation 59571. Up to 8262 conditions per place. [2024-06-28 01:38:09,542 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 270 selfloop transitions, 35 changer transitions 0/315 dead transitions. [2024-06-28 01:38:09,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 315 transitions, 3759 flow [2024-06-28 01:38:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-28 01:38:09,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2024-06-28 01:38:09,545 INFO L175 Difference]: Start difference. First operand has 211 places, 265 transitions, 2603 flow. Second operand 9 states and 202 transitions. [2024-06-28 01:38:09,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 315 transitions, 3759 flow [2024-06-28 01:38:09,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 315 transitions, 3631 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:09,927 INFO L231 Difference]: Finished difference. Result has 216 places, 280 transitions, 3010 flow [2024-06-28 01:38:09,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3010, PETRI_PLACES=216, PETRI_TRANSITIONS=280} [2024-06-28 01:38:09,927 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-28 01:38:09,927 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 280 transitions, 3010 flow [2024-06-28 01:38:09,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:09,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:09,928 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 01:38:09,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:38:09,928 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 01:38:09,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash 565457823, now seen corresponding path program 1 times [2024-06-28 01:38:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279797599] [2024-06-28 01:38:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:09,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:10,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279797599] [2024-06-28 01:38:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279797599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:10,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075198647] [2024-06-28 01:38:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:10,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:10,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:10,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 280 transitions, 3010 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:10,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:10,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:10,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:12,423 INFO L124 PetriNetUnfolderBase]: 5638/9245 cut-off events. [2024-06-28 01:38:12,423 INFO L125 PetriNetUnfolderBase]: For 392317/392357 co-relation queries the response was YES. [2024-06-28 01:38:12,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60448 conditions, 9245 events. 5638/9245 cut-off events. For 392317/392357 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 63733 event pairs, 1388 based on Foata normal form. 24/9062 useless extension candidates. Maximal degree in co-relation 60350. Up to 7574 conditions per place. [2024-06-28 01:38:12,517 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 268 selfloop transitions, 32 changer transitions 0/329 dead transitions. [2024-06-28 01:38:12,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 329 transitions, 3854 flow [2024-06-28 01:38:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:38:12,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-28 01:38:12,519 INFO L175 Difference]: Start difference. First operand has 216 places, 280 transitions, 3010 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:38:12,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 329 transitions, 3854 flow [2024-06-28 01:38:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 329 transitions, 3501 flow, removed 164 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:13,010 INFO L231 Difference]: Finished difference. Result has 222 places, 286 transitions, 2843 flow [2024-06-28 01:38:13,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2843, PETRI_PLACES=222, PETRI_TRANSITIONS=286} [2024-06-28 01:38:13,010 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-28 01:38:13,010 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 286 transitions, 2843 flow [2024-06-28 01:38:13,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:13,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:13,011 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 01:38:13,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:38:13,011 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 01:38:13,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1739716989, now seen corresponding path program 2 times [2024-06-28 01:38:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:13,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430443162] [2024-06-28 01:38:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:13,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:13,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430443162] [2024-06-28 01:38:13,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430443162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:13,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:13,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427656137] [2024-06-28 01:38:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:13,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:13,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 286 transitions, 2843 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:13,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:13,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:13,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:15,437 INFO L124 PetriNetUnfolderBase]: 5782/9464 cut-off events. [2024-06-28 01:38:15,438 INFO L125 PetriNetUnfolderBase]: For 414753/414777 co-relation queries the response was YES. [2024-06-28 01:38:15,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63286 conditions, 9464 events. 5782/9464 cut-off events. For 414753/414777 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 65408 event pairs, 1695 based on Foata normal form. 26/9291 useless extension candidates. Maximal degree in co-relation 63186. Up to 7789 conditions per place. [2024-06-28 01:38:15,567 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 270 selfloop transitions, 32 changer transitions 0/331 dead transitions. [2024-06-28 01:38:15,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 331 transitions, 3693 flow [2024-06-28 01:38:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:15,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:38:15,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-28 01:38:15,568 INFO L175 Difference]: Start difference. First operand has 222 places, 286 transitions, 2843 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:38:15,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 331 transitions, 3693 flow [2024-06-28 01:38:16,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 331 transitions, 3571 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:16,278 INFO L231 Difference]: Finished difference. Result has 225 places, 288 transitions, 2863 flow [2024-06-28 01:38:16,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2863, PETRI_PLACES=225, PETRI_TRANSITIONS=288} [2024-06-28 01:38:16,278 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-28 01:38:16,278 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 288 transitions, 2863 flow [2024-06-28 01:38:16,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:16,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:16,279 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 01:38:16,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:38:16,279 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:16,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 565796157, now seen corresponding path program 1 times [2024-06-28 01:38:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:16,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629298617] [2024-06-28 01:38:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:17,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:17,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629298617] [2024-06-28 01:38:17,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629298617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:17,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:17,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971093437] [2024-06-28 01:38:17,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:17,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:17,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:17,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:17,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 288 transitions, 2863 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:17,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:17,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:17,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:18,937 INFO L124 PetriNetUnfolderBase]: 6142/9947 cut-off events. [2024-06-28 01:38:18,937 INFO L125 PetriNetUnfolderBase]: For 412913/412922 co-relation queries the response was YES. [2024-06-28 01:38:19,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65600 conditions, 9947 events. 6142/9947 cut-off events. For 412913/412922 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 67934 event pairs, 1872 based on Foata normal form. 9/9748 useless extension candidates. Maximal degree in co-relation 65499. Up to 8599 conditions per place. [2024-06-28 01:38:19,072 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 289 selfloop transitions, 38 changer transitions 0/337 dead transitions. [2024-06-28 01:38:19,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 337 transitions, 3781 flow [2024-06-28 01:38:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:38:19,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 01:38:19,074 INFO L175 Difference]: Start difference. First operand has 225 places, 288 transitions, 2863 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:38:19,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 337 transitions, 3781 flow [2024-06-28 01:38:19,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 337 transitions, 3673 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:19,705 INFO L231 Difference]: Finished difference. Result has 228 places, 292 transitions, 2942 flow [2024-06-28 01:38:19,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2942, PETRI_PLACES=228, PETRI_TRANSITIONS=292} [2024-06-28 01:38:19,706 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-28 01:38:19,706 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 292 transitions, 2942 flow [2024-06-28 01:38:19,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:19,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:19,706 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 01:38:19,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:38:19,707 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 01:38:19,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2035858749, now seen corresponding path program 3 times [2024-06-28 01:38:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277201096] [2024-06-28 01:38:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:20,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:20,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277201096] [2024-06-28 01:38:20,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277201096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:20,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:20,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:20,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513414031] [2024-06-28 01:38:20,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:20,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:20,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:20,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:20,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:20,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:20,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 292 transitions, 2942 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:20,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:20,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:20,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:22,264 INFO L124 PetriNetUnfolderBase]: 6004/9834 cut-off events. [2024-06-28 01:38:22,265 INFO L125 PetriNetUnfolderBase]: For 457342/457470 co-relation queries the response was YES. [2024-06-28 01:38:22,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66993 conditions, 9834 events. 6004/9834 cut-off events. For 457342/457470 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 68450 event pairs, 1692 based on Foata normal form. 56/9653 useless extension candidates. Maximal degree in co-relation 66891. Up to 7921 conditions per place. [2024-06-28 01:38:22,391 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 261 selfloop transitions, 44 changer transitions 0/334 dead transitions. [2024-06-28 01:38:22,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 334 transitions, 3820 flow [2024-06-28 01:38:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:38:22,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:38:22,393 INFO L175 Difference]: Start difference. First operand has 228 places, 292 transitions, 2942 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:38:22,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 334 transitions, 3820 flow [2024-06-28 01:38:23,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 334 transitions, 3661 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:23,096 INFO L231 Difference]: Finished difference. Result has 229 places, 294 transitions, 2955 flow [2024-06-28 01:38:23,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2955, PETRI_PLACES=229, PETRI_TRANSITIONS=294} [2024-06-28 01:38:23,097 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-28 01:38:23,097 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 294 transitions, 2955 flow [2024-06-28 01:38:23,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:23,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:23,097 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 01:38:23,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:38:23,098 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 01:38:23,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:23,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1600882413, now seen corresponding path program 1 times [2024-06-28 01:38:23,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:23,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997167864] [2024-06-28 01:38:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:23,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:23,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997167864] [2024-06-28 01:38:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997167864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:23,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91982139] [2024-06-28 01:38:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:24,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:24,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 294 transitions, 2955 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:24,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:24,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:24,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:25,810 INFO L124 PetriNetUnfolderBase]: 6022/9900 cut-off events. [2024-06-28 01:38:25,810 INFO L125 PetriNetUnfolderBase]: For 452949/453006 co-relation queries the response was YES. [2024-06-28 01:38:25,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67635 conditions, 9900 events. 6022/9900 cut-off events. For 452949/453006 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 69082 event pairs, 1772 based on Foata normal form. 32/9695 useless extension candidates. Maximal degree in co-relation 67532. Up to 8199 conditions per place. [2024-06-28 01:38:25,938 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 276 selfloop transitions, 46 changer transitions 0/351 dead transitions. [2024-06-28 01:38:25,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 351 transitions, 3995 flow [2024-06-28 01:38:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:38:25,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:38:25,940 INFO L175 Difference]: Start difference. First operand has 229 places, 294 transitions, 2955 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:38:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 351 transitions, 3995 flow [2024-06-28 01:38:26,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 351 transitions, 3859 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:26,571 INFO L231 Difference]: Finished difference. Result has 233 places, 314 transitions, 3272 flow [2024-06-28 01:38:26,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3272, PETRI_PLACES=233, PETRI_TRANSITIONS=314} [2024-06-28 01:38:26,572 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-28 01:38:26,572 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 314 transitions, 3272 flow [2024-06-28 01:38:26,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:38:26,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:26,572 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 01:38:26,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:38:26,573 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 01:38:26,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1857928018, now seen corresponding path program 1 times [2024-06-28 01:38:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703547074] [2024-06-28 01:38:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:26,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:27,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:27,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703547074] [2024-06-28 01:38:27,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703547074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:27,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:27,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29805230] [2024-06-28 01:38:27,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:27,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:27,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:27,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:27,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 314 transitions, 3272 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:27,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:27,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:27,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:28,970 INFO L124 PetriNetUnfolderBase]: 6400/10400 cut-off events. [2024-06-28 01:38:28,970 INFO L125 PetriNetUnfolderBase]: For 472801/472810 co-relation queries the response was YES. [2024-06-28 01:38:29,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71372 conditions, 10400 events. 6400/10400 cut-off events. For 472801/472810 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 71771 event pairs, 1904 based on Foata normal form. 10/10182 useless extension candidates. Maximal degree in co-relation 71266. Up to 8976 conditions per place. [2024-06-28 01:38:29,102 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 311 selfloop transitions, 33 changer transitions 0/354 dead transitions. [2024-06-28 01:38:29,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 354 transitions, 4165 flow [2024-06-28 01:38:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:38:29,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:38:29,104 INFO L175 Difference]: Start difference. First operand has 233 places, 314 transitions, 3272 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:38:29,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 354 transitions, 4165 flow [2024-06-28 01:38:29,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 354 transitions, 3993 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:29,964 INFO L231 Difference]: Finished difference. Result has 237 places, 318 transitions, 3252 flow [2024-06-28 01:38:29,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3252, PETRI_PLACES=237, PETRI_TRANSITIONS=318} [2024-06-28 01:38:29,965 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2024-06-28 01:38:29,965 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 318 transitions, 3252 flow [2024-06-28 01:38:29,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:29,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:29,965 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 01:38:29,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:38:29,965 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 01:38:29,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -631298980, now seen corresponding path program 2 times [2024-06-28 01:38:29,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:29,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075368220] [2024-06-28 01:38:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:29,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:30,735 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 01:38:30,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075368220] [2024-06-28 01:38:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075368220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:30,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:30,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:30,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486293682] [2024-06-28 01:38:30,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:30,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:30,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:30,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:30,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 318 transitions, 3252 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:30,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:30,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:30,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:32,561 INFO L124 PetriNetUnfolderBase]: 6468/10509 cut-off events. [2024-06-28 01:38:32,561 INFO L125 PetriNetUnfolderBase]: For 485120/485129 co-relation queries the response was YES. [2024-06-28 01:38:32,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72049 conditions, 10509 events. 6468/10509 cut-off events. For 485120/485129 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 72648 event pairs, 1838 based on Foata normal form. 10/10287 useless extension candidates. Maximal degree in co-relation 71942. Up to 8612 conditions per place. [2024-06-28 01:38:32,720 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 288 selfloop transitions, 61 changer transitions 0/359 dead transitions. [2024-06-28 01:38:32,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 359 transitions, 4309 flow [2024-06-28 01:38:32,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:38:32,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:38:32,722 INFO L175 Difference]: Start difference. First operand has 237 places, 318 transitions, 3252 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:38:32,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 359 transitions, 4309 flow [2024-06-28 01:38:33,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 359 transitions, 4202 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:33,367 INFO L231 Difference]: Finished difference. Result has 239 places, 322 transitions, 3358 flow [2024-06-28 01:38:33,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3358, PETRI_PLACES=239, PETRI_TRANSITIONS=322} [2024-06-28 01:38:33,368 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-28 01:38:33,368 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 322 transitions, 3358 flow [2024-06-28 01:38:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:33,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:33,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:33,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:38:33,369 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 01:38:33,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2035982098, now seen corresponding path program 3 times [2024-06-28 01:38:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:33,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375095067] [2024-06-28 01:38:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:33,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:34,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375095067] [2024-06-28 01:38:34,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375095067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:34,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:34,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:34,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592390982] [2024-06-28 01:38:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:34,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:34,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:34,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:34,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 322 transitions, 3358 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:34,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:34,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:34,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:36,062 INFO L124 PetriNetUnfolderBase]: 6496/10546 cut-off events. [2024-06-28 01:38:36,062 INFO L125 PetriNetUnfolderBase]: For 493651/493660 co-relation queries the response was YES. [2024-06-28 01:38:36,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72654 conditions, 10546 events. 6496/10546 cut-off events. For 493651/493660 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 72746 event pairs, 1897 based on Foata normal form. 10/10330 useless extension candidates. Maximal degree in co-relation 72546. Up to 8625 conditions per place. [2024-06-28 01:38:36,216 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 289 selfloop transitions, 63 changer transitions 0/362 dead transitions. [2024-06-28 01:38:36,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 362 transitions, 4417 flow [2024-06-28 01:38:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:38:36,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:38:36,218 INFO L175 Difference]: Start difference. First operand has 239 places, 322 transitions, 3358 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:38:36,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 362 transitions, 4417 flow [2024-06-28 01:38:37,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 362 transitions, 4274 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:37,040 INFO L231 Difference]: Finished difference. Result has 242 places, 325 transitions, 3423 flow [2024-06-28 01:38:37,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3423, PETRI_PLACES=242, PETRI_TRANSITIONS=325} [2024-06-28 01:38:37,053 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-28 01:38:37,054 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 325 transitions, 3423 flow [2024-06-28 01:38:37,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:37,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:37,054 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 01:38:37,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:38:37,054 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 01:38:37,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2035870653, now seen corresponding path program 2 times [2024-06-28 01:38:37,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:37,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415270228] [2024-06-28 01:38:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:37,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415270228] [2024-06-28 01:38:37,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415270228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:37,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:37,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:37,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520481047] [2024-06-28 01:38:37,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:37,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:37,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:37,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:37,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 325 transitions, 3423 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:37,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:37,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:37,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:39,934 INFO L124 PetriNetUnfolderBase]: 7476/12100 cut-off events. [2024-06-28 01:38:39,934 INFO L125 PetriNetUnfolderBase]: For 533740/533749 co-relation queries the response was YES. [2024-06-28 01:38:40,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82365 conditions, 12100 events. 7476/12100 cut-off events. For 533740/533749 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 84548 event pairs, 2104 based on Foata normal form. 9/11839 useless extension candidates. Maximal degree in co-relation 82256. Up to 9591 conditions per place. [2024-06-28 01:38:40,108 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 352 selfloop transitions, 87 changer transitions 0/449 dead transitions. [2024-06-28 01:38:40,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 449 transitions, 5900 flow [2024-06-28 01:38:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-28 01:38:40,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:38:40,110 INFO L175 Difference]: Start difference. First operand has 242 places, 325 transitions, 3423 flow. Second operand 10 states and 240 transitions. [2024-06-28 01:38:40,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 449 transitions, 5900 flow [2024-06-28 01:38:41,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 449 transitions, 5640 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:41,178 INFO L231 Difference]: Finished difference. Result has 252 places, 387 transitions, 4453 flow [2024-06-28 01:38:41,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4453, PETRI_PLACES=252, PETRI_TRANSITIONS=387} [2024-06-28 01:38:41,179 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 01:38:41,179 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 387 transitions, 4453 flow [2024-06-28 01:38:41,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:41,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:41,179 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 01:38:41,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:38:41,179 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 01:38:41,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1500961185, now seen corresponding path program 3 times [2024-06-28 01:38:41,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747640850] [2024-06-28 01:38:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:41,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:42,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:42,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747640850] [2024-06-28 01:38:42,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747640850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:42,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:42,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744208343] [2024-06-28 01:38:42,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:42,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:42,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:42,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:42,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 387 transitions, 4453 flow. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:42,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:42,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:44,678 INFO L124 PetriNetUnfolderBase]: 8792/14181 cut-off events. [2024-06-28 01:38:44,678 INFO L125 PetriNetUnfolderBase]: For 636030/636041 co-relation queries the response was YES. [2024-06-28 01:38:44,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99334 conditions, 14181 events. 8792/14181 cut-off events. For 636030/636041 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 101021 event pairs, 2286 based on Foata normal form. 14/13863 useless extension candidates. Maximal degree in co-relation 99219. Up to 10496 conditions per place. [2024-06-28 01:38:44,923 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 385 selfloop transitions, 148 changer transitions 0/543 dead transitions. [2024-06-28 01:38:44,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 543 transitions, 7854 flow [2024-06-28 01:38:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 01:38:44,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-28 01:38:44,925 INFO L175 Difference]: Start difference. First operand has 252 places, 387 transitions, 4453 flow. Second operand 10 states and 249 transitions. [2024-06-28 01:38:44,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 543 transitions, 7854 flow [2024-06-28 01:38:46,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 543 transitions, 7566 flow, removed 143 selfloop flow, removed 1 redundant places. [2024-06-28 01:38:46,373 INFO L231 Difference]: Finished difference. Result has 265 places, 470 transitions, 6262 flow [2024-06-28 01:38:46,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6262, PETRI_PLACES=265, PETRI_TRANSITIONS=470} [2024-06-28 01:38:46,373 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-28 01:38:46,373 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 470 transitions, 6262 flow [2024-06-28 01:38:46,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:46,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:46,374 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 01:38:46,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:38:46,374 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 01:38:46,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash -961708284, now seen corresponding path program 1 times [2024-06-28 01:38:46,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:46,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498512817] [2024-06-28 01:38:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:46,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:47,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:47,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498512817] [2024-06-28 01:38:47,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498512817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:47,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:47,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:47,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503061569] [2024-06-28 01:38:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:47,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:47,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:47,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:47,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 470 transitions, 6262 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:47,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:47,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:47,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:49,930 INFO L124 PetriNetUnfolderBase]: 8809/14212 cut-off events. [2024-06-28 01:38:49,931 INFO L125 PetriNetUnfolderBase]: For 665242/665242 co-relation queries the response was YES. [2024-06-28 01:38:50,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104342 conditions, 14212 events. 8809/14212 cut-off events. For 665242/665242 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 101281 event pairs, 3095 based on Foata normal form. 1/13892 useless extension candidates. Maximal degree in co-relation 104220. Up to 12337 conditions per place. [2024-06-28 01:38:50,281 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 478 selfloop transitions, 36 changer transitions 0/524 dead transitions. [2024-06-28 01:38:50,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 524 transitions, 7685 flow [2024-06-28 01:38:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-28 01:38:50,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:38:50,283 INFO L175 Difference]: Start difference. First operand has 265 places, 470 transitions, 6262 flow. Second operand 10 states and 230 transitions. [2024-06-28 01:38:50,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 524 transitions, 7685 flow [2024-06-28 01:38:51,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 524 transitions, 7436 flow, removed 119 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:51,869 INFO L231 Difference]: Finished difference. Result has 277 places, 483 transitions, 6353 flow [2024-06-28 01:38:51,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6013, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6353, PETRI_PLACES=277, PETRI_TRANSITIONS=483} [2024-06-28 01:38:51,870 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-28 01:38:51,870 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 483 transitions, 6353 flow [2024-06-28 01:38:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:51,871 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 01:38:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:38:51,871 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 01:38:51,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:51,871 INFO L85 PathProgramCache]: Analyzing trace with hash 760409669, now seen corresponding path program 4 times [2024-06-28 01:38:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691479837] [2024-06-28 01:38:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:53,229 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 01:38:53,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:53,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691479837] [2024-06-28 01:38:53,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691479837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:53,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:53,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:53,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355024185] [2024-06-28 01:38:53,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:53,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:53,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:53,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:53,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 483 transitions, 6353 flow. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:53,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:53,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:53,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:56,705 INFO L124 PetriNetUnfolderBase]: 8840/14270 cut-off events. [2024-06-28 01:38:56,706 INFO L125 PetriNetUnfolderBase]: For 670016/670025 co-relation queries the response was YES. [2024-06-28 01:38:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104608 conditions, 14270 events. 8840/14270 cut-off events. For 670016/670025 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 101701 event pairs, 2441 based on Foata normal form. 9/13963 useless extension candidates. Maximal degree in co-relation 104480. Up to 10547 conditions per place. [2024-06-28 01:38:56,927 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 379 selfloop transitions, 163 changer transitions 0/552 dead transitions. [2024-06-28 01:38:56,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 552 transitions, 8246 flow [2024-06-28 01:38:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 01:38:56,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:38:56,928 INFO L175 Difference]: Start difference. First operand has 277 places, 483 transitions, 6353 flow. Second operand 10 states and 250 transitions. [2024-06-28 01:38:56,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 552 transitions, 8246 flow [2024-06-28 01:38:58,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 552 transitions, 8102 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:58,500 INFO L231 Difference]: Finished difference. Result has 286 places, 494 transitions, 6907 flow [2024-06-28 01:38:58,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6209, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6907, PETRI_PLACES=286, PETRI_TRANSITIONS=494} [2024-06-28 01:38:58,501 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-06-28 01:38:58,501 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 494 transitions, 6907 flow [2024-06-28 01:38:58,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:58,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:58,501 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 01:38:58,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:38:58,502 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 01:38:58,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:58,502 INFO L85 PathProgramCache]: Analyzing trace with hash 760797479, now seen corresponding path program 5 times [2024-06-28 01:38:58,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:58,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404337231] [2024-06-28 01:38:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:59,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:59,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404337231] [2024-06-28 01:38:59,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404337231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:59,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:59,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261721560] [2024-06-28 01:38:59,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:59,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:59,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:59,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:59,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:59,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 494 transitions, 6907 flow. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:59,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:59,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:59,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:02,860 INFO L124 PetriNetUnfolderBase]: 8830/14066 cut-off events. [2024-06-28 01:39:02,860 INFO L125 PetriNetUnfolderBase]: For 683544/683553 co-relation queries the response was YES. [2024-06-28 01:39:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106818 conditions, 14066 events. 8830/14066 cut-off events. For 683544/683553 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 98291 event pairs, 2258 based on Foata normal form. 12/13806 useless extension candidates. Maximal degree in co-relation 106686. Up to 10543 conditions per place. [2024-06-28 01:39:03,210 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 393 selfloop transitions, 149 changer transitions 0/552 dead transitions. [2024-06-28 01:39:03,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 552 transitions, 8603 flow [2024-06-28 01:39:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-28 01:39:03,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 01:39:03,211 INFO L175 Difference]: Start difference. First operand has 286 places, 494 transitions, 6907 flow. Second operand 10 states and 248 transitions. [2024-06-28 01:39:03,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 552 transitions, 8603 flow [2024-06-28 01:39:05,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 552 transitions, 8177 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:05,039 INFO L231 Difference]: Finished difference. Result has 291 places, 499 transitions, 6903 flow [2024-06-28 01:39:05,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6481, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6903, PETRI_PLACES=291, PETRI_TRANSITIONS=499} [2024-06-28 01:39:05,040 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2024-06-28 01:39:05,041 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 499 transitions, 6903 flow [2024-06-28 01:39:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:05,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:05,041 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 01:39:05,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:39:05,041 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 01:39:05,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 853965492, now seen corresponding path program 2 times [2024-06-28 01:39:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151273812] [2024-06-28 01:39:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:05,837 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 01:39:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151273812] [2024-06-28 01:39:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151273812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:05,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:05,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:05,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927059346] [2024-06-28 01:39:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:05,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:05,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:05,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 499 transitions, 6903 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:05,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:05,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:05,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:09,063 INFO L124 PetriNetUnfolderBase]: 8847/14299 cut-off events. [2024-06-28 01:39:09,064 INFO L125 PetriNetUnfolderBase]: For 692650/692650 co-relation queries the response was YES. [2024-06-28 01:39:09,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107896 conditions, 14299 events. 8847/14299 cut-off events. For 692650/692650 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 102394 event pairs, 2966 based on Foata normal form. 1/13976 useless extension candidates. Maximal degree in co-relation 107762. Up to 12348 conditions per place. [2024-06-28 01:39:09,276 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 483 selfloop transitions, 45 changer transitions 0/538 dead transitions. [2024-06-28 01:39:09,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 538 transitions, 8241 flow [2024-06-28 01:39:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 01:39:09,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-06-28 01:39:09,278 INFO L175 Difference]: Start difference. First operand has 291 places, 499 transitions, 6903 flow. Second operand 9 states and 206 transitions. [2024-06-28 01:39:09,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 538 transitions, 8241 flow [2024-06-28 01:39:10,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 538 transitions, 8005 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:10,947 INFO L231 Difference]: Finished difference. Result has 294 places, 502 transitions, 6888 flow [2024-06-28 01:39:10,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6667, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6888, PETRI_PLACES=294, PETRI_TRANSITIONS=502} [2024-06-28 01:39:10,948 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-28 01:39:10,948 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 502 transitions, 6888 flow [2024-06-28 01:39:10,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:10,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:10,949 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 01:39:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:39:10,949 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 01:39:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 853965027, now seen corresponding path program 6 times [2024-06-28 01:39:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696236756] [2024-06-28 01:39:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:11,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696236756] [2024-06-28 01:39:11,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696236756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:11,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:11,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:11,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849612575] [2024-06-28 01:39:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:11,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:11,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 502 transitions, 6888 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:11,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:11,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:15,155 INFO L124 PetriNetUnfolderBase]: 8902/14278 cut-off events. [2024-06-28 01:39:15,155 INFO L125 PetriNetUnfolderBase]: For 710969/710978 co-relation queries the response was YES. [2024-06-28 01:39:15,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108183 conditions, 14278 events. 8902/14278 cut-off events. For 710969/710978 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 101346 event pairs, 1923 based on Foata normal form. 9/13975 useless extension candidates. Maximal degree in co-relation 108048. Up to 9733 conditions per place. [2024-06-28 01:39:15,350 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 340 selfloop transitions, 198 changer transitions 0/548 dead transitions. [2024-06-28 01:39:15,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 548 transitions, 8561 flow [2024-06-28 01:39:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:39:15,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:39:15,351 INFO L175 Difference]: Start difference. First operand has 294 places, 502 transitions, 6888 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:39:15,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 548 transitions, 8561 flow [2024-06-28 01:39:16,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 548 transitions, 8366 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:16,995 INFO L231 Difference]: Finished difference. Result has 296 places, 506 transitions, 7228 flow [2024-06-28 01:39:16,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6697, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7228, PETRI_PLACES=296, PETRI_TRANSITIONS=506} [2024-06-28 01:39:16,995 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-28 01:39:16,995 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 506 transitions, 7228 flow [2024-06-28 01:39:16,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:16,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:16,996 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 01:39:16,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:39:16,996 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 01:39:16,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:16,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2036245443, now seen corresponding path program 7 times [2024-06-28 01:39:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:16,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735332585] [2024-06-28 01:39:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:16,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:17,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:17,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735332585] [2024-06-28 01:39:17,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735332585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:17,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:17,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:17,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450281056] [2024-06-28 01:39:17,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:17,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:17,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:17,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:17,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:17,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:17,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 506 transitions, 7228 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:17,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:17,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:21,267 INFO L124 PetriNetUnfolderBase]: 8897/14338 cut-off events. [2024-06-28 01:39:21,268 INFO L125 PetriNetUnfolderBase]: For 705305/705314 co-relation queries the response was YES. [2024-06-28 01:39:21,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109543 conditions, 14338 events. 8897/14338 cut-off events. For 705305/705314 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 102374 event pairs, 2133 based on Foata normal form. 9/14013 useless extension candidates. Maximal degree in co-relation 109407. Up to 10540 conditions per place. [2024-06-28 01:39:21,703 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 397 selfloop transitions, 159 changer transitions 0/566 dead transitions. [2024-06-28 01:39:21,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 566 transitions, 8988 flow [2024-06-28 01:39:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-28 01:39:21,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:39:21,704 INFO L175 Difference]: Start difference. First operand has 296 places, 506 transitions, 7228 flow. Second operand 10 states and 238 transitions. [2024-06-28 01:39:21,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 566 transitions, 8988 flow [2024-06-28 01:39:23,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 566 transitions, 8477 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:23,253 INFO L231 Difference]: Finished difference. Result has 301 places, 511 transitions, 7229 flow [2024-06-28 01:39:23,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6733, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7229, PETRI_PLACES=301, PETRI_TRANSITIONS=511} [2024-06-28 01:39:23,254 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 247 predicate places. [2024-06-28 01:39:23,254 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 511 transitions, 7229 flow [2024-06-28 01:39:23,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:23,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:23,255 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 01:39:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:39:23,255 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 01:39:23,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash -228163331, now seen corresponding path program 4 times [2024-06-28 01:39:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914308187] [2024-06-28 01:39:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:24,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:24,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914308187] [2024-06-28 01:39:24,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914308187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:24,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:24,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:24,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713163367] [2024-06-28 01:39:24,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:24,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:24,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:39:24,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 511 transitions, 7229 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:39:24,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:24,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:39:24,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:27,356 INFO L124 PetriNetUnfolderBase]: 8457/14090 cut-off events. [2024-06-28 01:39:27,357 INFO L125 PetriNetUnfolderBase]: For 756101/756313 co-relation queries the response was YES. [2024-06-28 01:39:27,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107570 conditions, 14090 events. 8457/14090 cut-off events. For 756101/756313 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 104926 event pairs, 1784 based on Foata normal form. 119/13613 useless extension candidates. Maximal degree in co-relation 107432. Up to 10415 conditions per place. [2024-06-28 01:39:27,599 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 394 selfloop transitions, 113 changer transitions 0/549 dead transitions. [2024-06-28 01:39:27,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 549 transitions, 8577 flow [2024-06-28 01:39:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:39:27,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-28 01:39:27,600 INFO L175 Difference]: Start difference. First operand has 301 places, 511 transitions, 7229 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:39:27,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 549 transitions, 8577 flow [2024-06-28 01:39:29,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 549 transitions, 8447 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:29,570 INFO L231 Difference]: Finished difference. Result has 306 places, 513 transitions, 7425 flow [2024-06-28 01:39:29,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7099, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7425, PETRI_PLACES=306, PETRI_TRANSITIONS=513} [2024-06-28 01:39:29,571 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 252 predicate places. [2024-06-28 01:39:29,571 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 513 transitions, 7425 flow [2024-06-28 01:39:29,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:39:29,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:29,571 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 01:39:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:39:29,572 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 01:39:29,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash 787899637, now seen corresponding path program 2 times [2024-06-28 01:39:29,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:29,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822702395] [2024-06-28 01:39:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822702395] [2024-06-28 01:39:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822702395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:30,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:30,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325292987] [2024-06-28 01:39:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:30,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:39:30,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 513 transitions, 7425 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:39:30,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:30,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:39:30,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:33,534 INFO L124 PetriNetUnfolderBase]: 8445/13850 cut-off events. [2024-06-28 01:39:33,534 INFO L125 PetriNetUnfolderBase]: For 740731/740847 co-relation queries the response was YES. [2024-06-28 01:39:33,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108036 conditions, 13850 events. 8445/13850 cut-off events. For 740731/740847 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 100969 event pairs, 2189 based on Foata normal form. 95/13581 useless extension candidates. Maximal degree in co-relation 107897. Up to 11203 conditions per place. [2024-06-28 01:39:33,725 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 442 selfloop transitions, 71 changer transitions 0/555 dead transitions. [2024-06-28 01:39:33,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 555 transitions, 8730 flow [2024-06-28 01:39:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:39:33,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:39:33,727 INFO L175 Difference]: Start difference. First operand has 306 places, 513 transitions, 7425 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:39:33,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 555 transitions, 8730 flow [2024-06-28 01:39:35,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 555 transitions, 8440 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:35,541 INFO L231 Difference]: Finished difference. Result has 310 places, 520 transitions, 7455 flow [2024-06-28 01:39:35,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7135, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7455, PETRI_PLACES=310, PETRI_TRANSITIONS=520} [2024-06-28 01:39:35,542 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 256 predicate places. [2024-06-28 01:39:35,542 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 520 transitions, 7455 flow [2024-06-28 01:39:35,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:39:35,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:35,542 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 01:39:35,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:39:35,542 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 01:39:35,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2114457636, now seen corresponding path program 4 times [2024-06-28 01:39:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:35,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331757145] [2024-06-28 01:39:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331757145] [2024-06-28 01:39:36,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331757145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:36,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:36,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240851780] [2024-06-28 01:39:36,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:36,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:36,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:36,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:36,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 520 transitions, 7455 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:36,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:36,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:36,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:39,880 INFO L124 PetriNetUnfolderBase]: 9017/14569 cut-off events. [2024-06-28 01:39:39,880 INFO L125 PetriNetUnfolderBase]: For 733564/733564 co-relation queries the response was YES. [2024-06-28 01:39:40,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110396 conditions, 14569 events. 9017/14569 cut-off events. For 733564/733564 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 104425 event pairs, 2454 based on Foata normal form. 4/14230 useless extension candidates. Maximal degree in co-relation 110254. Up to 12428 conditions per place. [2024-06-28 01:39:40,088 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 482 selfloop transitions, 63 changer transitions 0/555 dead transitions. [2024-06-28 01:39:40,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 555 transitions, 8709 flow [2024-06-28 01:39:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:39:40,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 01:39:40,090 INFO L175 Difference]: Start difference. First operand has 310 places, 520 transitions, 7455 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:39:40,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 555 transitions, 8709 flow [2024-06-28 01:39:41,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 555 transitions, 8455 flow, removed 85 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:41,973 INFO L231 Difference]: Finished difference. Result has 315 places, 520 transitions, 7337 flow [2024-06-28 01:39:41,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7201, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7337, PETRI_PLACES=315, PETRI_TRANSITIONS=520} [2024-06-28 01:39:41,974 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 261 predicate places. [2024-06-28 01:39:41,974 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 520 transitions, 7337 flow [2024-06-28 01:39:41,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:41,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:41,974 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 01:39:41,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:39:41,974 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 01:39:41,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1468549323, now seen corresponding path program 3 times [2024-06-28 01:39:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639366395] [2024-06-28 01:39:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:42,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:42,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639366395] [2024-06-28 01:39:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639366395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:42,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:42,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460589301] [2024-06-28 01:39:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:42,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:42,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:42,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:42,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:42,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:39:42,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 520 transitions, 7337 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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 01:39:42,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:42,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:39:42,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand