./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix038_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix038_tso.oepc.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_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix038_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:25:42,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:25:42,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:25:42,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:25:42,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:25:42,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:25:42,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:25:42,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:25:42,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:25:42,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:25:42,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:25:42,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:25:42,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:25:42,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:25:42,254 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:25:42,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:25:42,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:25:42,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:25:42,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:25:42,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:25:42,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:25:42,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:25:42,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:25:42,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:25:42,260 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:25:42,260 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:25:42,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:25:42,261 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:25:42,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:25:42,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:25:42,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:25:42,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:25:42,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:25:42,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:25:42,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:25:42,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:25:42,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:25:42,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:25:42,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:25:42,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:25:42,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:25:42,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:25:42,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:25:42,265 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:25:42,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:25:42,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:25:42,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:25:42,514 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:25:42,515 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:25:42,516 INFO L431 ainManager$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_tso.oepc.yml/witness.yml [2024-06-28 03:25:42,676 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:25:42,677 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:25:42,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix038_tso.oepc.i [2024-06-28 03:25:43,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:25:43,946 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:25:43,950 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix038_tso.oepc.i [2024-06-28 03:25:43,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96fb6fd44/4e3a78b53593444b8155722039038048/FLAG578634e85 [2024-06-28 03:25:43,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96fb6fd44/4e3a78b53593444b8155722039038048 [2024-06-28 03:25:43,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:25:43,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:25:43,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:25:43,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:25:43,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:25:43,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:25:42" (1/2) ... [2024-06-28 03:25:43,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6ec5b7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:25:43, skipping insertion in model container [2024-06-28 03:25:43,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:25:42" (1/2) ... [2024-06-28 03:25:43,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d84a2bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:25:43, skipping insertion in model container [2024-06-28 03:25:43,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:25:43" (2/2) ... [2024-06-28 03:25:43,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6ec5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:43, skipping insertion in model container [2024-06-28 03:25:43,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:25:43" (2/2) ... [2024-06-28 03:25:43,983 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:25:44,070 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:25:44,071 INFO L97 edCorrectnessWitness]: Location invariant before [L833-L833] (((((((((((((((((((! multithreaded || x$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 03:25:44,072 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((((! multithreaded || x$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$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)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 03:25:44,072 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((((! multithreaded || x$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 03:25:44,072 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:25:44,072 INFO L106 edCorrectnessWitness]: ghost_update [L831-L831] multithreaded = 1; [2024-06-28 03:25:44,123 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:25:44,467 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:25:44,477 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:25:44,607 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:25:44,650 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:25:44,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44 WrapperNode [2024-06-28 03:25:44,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:25:44,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:25:44,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:25:44,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:25:44,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,696 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 146 [2024-06-28 03:25:44,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:25:44,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:25:44,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:25:44,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:25:44,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,735 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 03:25:44,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:25:44,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:25:44,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:25:44,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:25:44,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (1/1) ... [2024-06-28 03:25:44,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:25:44,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:25:44,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:25:44,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:25:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:25:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:25:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:25:44,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:25:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:25:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:25:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:25:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:25:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:25:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:25:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:25:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:25:44,847 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:25:44,969 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:25:44,970 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:25:45,345 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:25:45,345 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:25:45,503 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:25:45,504 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:25:45,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:25:45 BoogieIcfgContainer [2024-06-28 03:25:45,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:25:45,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:25:45,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:25:45,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:25:45,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:25:42" (1/4) ... [2024-06-28 03:25:45,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1dc9b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:25:45, skipping insertion in model container [2024-06-28 03:25:45,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:25:43" (2/4) ... [2024-06-28 03:25:45,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1dc9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:25:45, skipping insertion in model container [2024-06-28 03:25:45,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:25:44" (3/4) ... [2024-06-28 03:25:45,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1dc9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:25:45, skipping insertion in model container [2024-06-28 03:25:45,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:25:45" (4/4) ... [2024-06-28 03:25:45,513 INFO L112 eAbstractionObserver]: Analyzing ICFG mix038_tso.oepc.i [2024-06-28 03:25:45,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:25:45,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:25:45,526 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:25:45,559 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:25:45,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:25:45,612 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 03:25:45,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:25:45,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:25:45,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:25:45,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 03:25:45,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:25:45,638 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;@18d32f2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:25:45,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:25:45,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:25:45,644 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:25:45,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:25:45,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:45,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:25:45,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:45,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:45,650 INFO L85 PathProgramCache]: Analyzing trace with hash 378883743, now seen corresponding path program 1 times [2024-06-28 03:25:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:45,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455249758] [2024-06-28 03:25:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:46,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455249758] [2024-06-28 03:25:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455249758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:46,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:25:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784977167] [2024-06-28 03:25:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:46,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:25:46,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:25:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:25:46,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-28 03:25:46,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:46,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:46,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-28 03:25:46,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:47,022 INFO L124 PetriNetUnfolderBase]: 1363/2170 cut-off events. [2024-06-28 03:25:47,022 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 03:25:47,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4294 conditions, 2170 events. 1363/2170 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10777 event pairs, 964 based on Foata normal form. 1/2092 useless extension candidates. Maximal degree in co-relation 4282. Up to 2037 conditions per place. [2024-06-28 03:25:47,040 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-28 03:25:47,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 173 flow [2024-06-28 03:25:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:25:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:25:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-28 03:25:47,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-28 03:25:47,052 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 75 transitions. [2024-06-28 03:25:47,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 173 flow [2024-06-28 03:25:47,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:25:47,056 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 03:25:47,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 03:25:47,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 03:25:47,060 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 03:25:47,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:47,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:47,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:47,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:25:47,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:47,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:47,061 INFO L85 PathProgramCache]: Analyzing trace with hash -964910146, now seen corresponding path program 1 times [2024-06-28 03:25:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:47,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858244895] [2024-06-28 03:25:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:47,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858244895] [2024-06-28 03:25:47,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858244895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:47,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:47,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:25:47,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635511585] [2024-06-28 03:25:47,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:25:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:47,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:25:47,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:25:47,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:25:47,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:47,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:47,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:25:47,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:47,857 INFO L124 PetriNetUnfolderBase]: 1564/2415 cut-off events. [2024-06-28 03:25:47,858 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2024-06-28 03:25:47,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5442 conditions, 2415 events. 1564/2415 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11760 event pairs, 981 based on Foata normal form. 3/2379 useless extension candidates. Maximal degree in co-relation 5430. Up to 2310 conditions per place. [2024-06-28 03:25:47,870 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 40 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-28 03:25:47,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 242 flow [2024-06-28 03:25:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:25:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:25:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-28 03:25:47,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-28 03:25:47,872 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 94 transitions. [2024-06-28 03:25:47,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 242 flow [2024-06-28 03:25:47,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:25:47,874 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-28 03:25:47,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-28 03:25:47,875 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-28 03:25:47,875 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-28 03:25:47,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:47,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:47,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:47,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:25:47,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:47,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash 152557638, now seen corresponding path program 1 times [2024-06-28 03:25:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:47,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386747861] [2024-06-28 03:25:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:47,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:48,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386747861] [2024-06-28 03:25:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386747861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:48,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:48,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:25:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095383550] [2024-06-28 03:25:48,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:48,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:25:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:25:48,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:25:48,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:25:48,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:48,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:48,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:25:48,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:48,730 INFO L124 PetriNetUnfolderBase]: 1552/2399 cut-off events. [2024-06-28 03:25:48,730 INFO L125 PetriNetUnfolderBase]: For 1262/1262 co-relation queries the response was YES. [2024-06-28 03:25:48,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5994 conditions, 2399 events. 1552/2399 cut-off events. For 1262/1262 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11673 event pairs, 697 based on Foata normal form. 6/2366 useless extension candidates. Maximal degree in co-relation 5980. Up to 2262 conditions per place. [2024-06-28 03:25:48,740 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 48 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-28 03:25:48,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 324 flow [2024-06-28 03:25:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:25:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:25:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-28 03:25:48,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-06-28 03:25:48,742 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 5 states and 116 transitions. [2024-06-28 03:25:48,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 324 flow [2024-06-28 03:25:48,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 310 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:25:48,744 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 174 flow [2024-06-28 03:25:48,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 03:25:48,745 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-28 03:25:48,745 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 174 flow [2024-06-28 03:25:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:48,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:48,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:25:48,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:48,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1140494977, now seen corresponding path program 1 times [2024-06-28 03:25:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752884282] [2024-06-28 03:25:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752884282] [2024-06-28 03:25:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752884282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:49,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:25:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654268015] [2024-06-28 03:25:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:49,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:25:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:25:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:25:49,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:25:49,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:49,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:49,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:25:49,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:50,229 INFO L124 PetriNetUnfolderBase]: 1543/2382 cut-off events. [2024-06-28 03:25:50,229 INFO L125 PetriNetUnfolderBase]: For 2338/2338 co-relation queries the response was YES. [2024-06-28 03:25:50,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6524 conditions, 2382 events. 1543/2382 cut-off events. For 2338/2338 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11552 event pairs, 534 based on Foata normal form. 6/2349 useless extension candidates. Maximal degree in co-relation 6509. Up to 2217 conditions per place. [2024-06-28 03:25:50,240 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 52 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-06-28 03:25:50,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 378 flow [2024-06-28 03:25:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:25:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:25:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 03:25:50,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 03:25:50,242 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 174 flow. Second operand 6 states and 133 transitions. [2024-06-28 03:25:50,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 378 flow [2024-06-28 03:25:50,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 354 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:25:50,244 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 193 flow [2024-06-28 03:25:50,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-28 03:25:50,245 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-28 03:25:50,245 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 193 flow [2024-06-28 03:25:50,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:50,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:50,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:50,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:25:50,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:50,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -4445516, now seen corresponding path program 1 times [2024-06-28 03:25:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:50,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293391246] [2024-06-28 03:25:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:50,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:50,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293391246] [2024-06-28 03:25:50,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293391246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:50,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:50,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:25:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647571092] [2024-06-28 03:25:50,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:50,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:25:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:25:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:25:50,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:50,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 03:25:50,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:50,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:50,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:51,184 INFO L124 PetriNetUnfolderBase]: 1331/2196 cut-off events. [2024-06-28 03:25:51,185 INFO L125 PetriNetUnfolderBase]: For 3113/3113 co-relation queries the response was YES. [2024-06-28 03:25:51,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6201 conditions, 2196 events. 1331/2196 cut-off events. For 3113/3113 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11393 event pairs, 638 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 6184. Up to 1979 conditions per place. [2024-06-28 03:25:51,194 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 42 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-06-28 03:25:51,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 349 flow [2024-06-28 03:25:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:25:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:25:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:25:51,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:25:51,196 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 193 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:25:51,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 349 flow [2024-06-28 03:25:51,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 314 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:51,199 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 223 flow [2024-06-28 03:25:51,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 03:25:51,200 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-28 03:25:51,200 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 223 flow [2024-06-28 03:25:51,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 03:25:51,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:51,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:51,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:25:51,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:51,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1670634987, now seen corresponding path program 1 times [2024-06-28 03:25:51,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487107356] [2024-06-28 03:25:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:51,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:51,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487107356] [2024-06-28 03:25:51,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487107356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:51,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:51,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:25:51,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237503642] [2024-06-28 03:25:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:51,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:25:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:25:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:25:51,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:51,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:51,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:51,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:51,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:52,354 INFO L124 PetriNetUnfolderBase]: 1549/2420 cut-off events. [2024-06-28 03:25:52,354 INFO L125 PetriNetUnfolderBase]: For 5050/5050 co-relation queries the response was YES. [2024-06-28 03:25:52,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 2420 events. 1549/2420 cut-off events. For 5050/5050 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11905 event pairs, 737 based on Foata normal form. 2/2407 useless extension candidates. Maximal degree in co-relation 7477. Up to 2277 conditions per place. [2024-06-28 03:25:52,367 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 51 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 03:25:52,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 415 flow [2024-06-28 03:25:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:25:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:25:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:25:52,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 03:25:52,369 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 223 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:25:52,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 415 flow [2024-06-28 03:25:52,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 391 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:25:52,372 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 257 flow [2024-06-28 03:25:52,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-28 03:25:52,373 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-28 03:25:52,373 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 257 flow [2024-06-28 03:25:52,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:52,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:52,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:52,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:25:52,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:52,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:52,374 INFO L85 PathProgramCache]: Analyzing trace with hash 22846931, now seen corresponding path program 2 times [2024-06-28 03:25:52,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:52,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065147427] [2024-06-28 03:25:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:52,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:53,092 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 03:25:53,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065147427] [2024-06-28 03:25:53,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065147427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:53,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:53,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:25:53,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105530578] [2024-06-28 03:25:53,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:53,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:25:53,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:53,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:25:53,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:25:53,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:53,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:53,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:53,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:53,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:53,495 INFO L124 PetriNetUnfolderBase]: 1544/2419 cut-off events. [2024-06-28 03:25:53,496 INFO L125 PetriNetUnfolderBase]: For 6821/6827 co-relation queries the response was YES. [2024-06-28 03:25:53,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8039 conditions, 2419 events. 1544/2419 cut-off events. For 6821/6827 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11950 event pairs, 734 based on Foata normal form. 6/2413 useless extension candidates. Maximal degree in co-relation 8018. Up to 2252 conditions per place. [2024-06-28 03:25:53,512 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 48 selfloop transitions, 16 changer transitions 0/69 dead transitions. [2024-06-28 03:25:53,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 451 flow [2024-06-28 03:25:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:25:53,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:25:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 03:25:53,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-06-28 03:25:53,514 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 257 flow. Second operand 6 states and 109 transitions. [2024-06-28 03:25:53,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 451 flow [2024-06-28 03:25:53,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 417 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:53,518 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 295 flow [2024-06-28 03:25:53,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 03:25:53,520 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-06-28 03:25:53,520 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 295 flow [2024-06-28 03:25:53,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:53,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:53,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:25:53,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:53,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash 22854867, now seen corresponding path program 1 times [2024-06-28 03:25:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:53,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153747114] [2024-06-28 03:25:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:54,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:54,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153747114] [2024-06-28 03:25:54,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153747114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:54,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:54,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:25:54,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343834559] [2024-06-28 03:25:54,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:54,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:25:54,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:25:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:25:54,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:54,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 295 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:54,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:54,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:54,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:54,802 INFO L124 PetriNetUnfolderBase]: 1629/2626 cut-off events. [2024-06-28 03:25:54,803 INFO L125 PetriNetUnfolderBase]: For 8994/8994 co-relation queries the response was YES. [2024-06-28 03:25:54,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8997 conditions, 2626 events. 1629/2626 cut-off events. For 8994/8994 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13303 event pairs, 757 based on Foata normal form. 2/2614 useless extension candidates. Maximal degree in co-relation 8975. Up to 2393 conditions per place. [2024-06-28 03:25:54,814 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 58 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-28 03:25:54,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 526 flow [2024-06-28 03:25:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:25:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:25:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:25:54,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 03:25:54,817 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 295 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:25:54,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 526 flow [2024-06-28 03:25:54,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 475 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:54,822 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 333 flow [2024-06-28 03:25:54,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-06-28 03:25:54,822 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-28 03:25:54,823 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 333 flow [2024-06-28 03:25:54,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:54,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:54,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:54,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:25:54,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:54,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash 476608907, now seen corresponding path program 1 times [2024-06-28 03:25:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025782018] [2024-06-28 03:25:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:54,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:55,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:55,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025782018] [2024-06-28 03:25:55,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025782018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:55,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:55,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:25:55,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451429453] [2024-06-28 03:25:55,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:55,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:25:55,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:55,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:25:55,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:25:55,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:55,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:55,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:55,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:55,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:56,060 INFO L124 PetriNetUnfolderBase]: 1874/2909 cut-off events. [2024-06-28 03:25:56,060 INFO L125 PetriNetUnfolderBase]: For 13470/13480 co-relation queries the response was YES. [2024-06-28 03:25:56,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11031 conditions, 2909 events. 1874/2909 cut-off events. For 13470/13480 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14504 event pairs, 662 based on Foata normal form. 4/2887 useless extension candidates. Maximal degree in co-relation 11007. Up to 2679 conditions per place. [2024-06-28 03:25:56,073 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 67 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-06-28 03:25:56,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 98 transitions, 663 flow [2024-06-28 03:25:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:25:56,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:25:56,075 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 333 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:25:56,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 98 transitions, 663 flow [2024-06-28 03:25:56,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 621 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:56,082 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 457 flow [2024-06-28 03:25:56,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=457, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-28 03:25:56,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-28 03:25:56,083 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 457 flow [2024-06-28 03:25:56,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:56,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:56,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:25:56,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:56,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash 531124043, now seen corresponding path program 2 times [2024-06-28 03:25:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:56,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064298163] [2024-06-28 03:25:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:56,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:56,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064298163] [2024-06-28 03:25:56,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064298163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:56,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:56,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:25:56,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199966844] [2024-06-28 03:25:56,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:56,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:25:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:56,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:25:56,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:25:56,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:56,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 457 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:56,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:56,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:56,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:57,412 INFO L124 PetriNetUnfolderBase]: 2003/3108 cut-off events. [2024-06-28 03:25:57,412 INFO L125 PetriNetUnfolderBase]: For 18401/18411 co-relation queries the response was YES. [2024-06-28 03:25:57,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12982 conditions, 3108 events. 2003/3108 cut-off events. For 18401/18411 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15521 event pairs, 606 based on Foata normal form. 18/3106 useless extension candidates. Maximal degree in co-relation 12954. Up to 2720 conditions per place. [2024-06-28 03:25:57,426 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 71 selfloop transitions, 31 changer transitions 0/108 dead transitions. [2024-06-28 03:25:57,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 853 flow [2024-06-28 03:25:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:25:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:25:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:25:57,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-28 03:25:57,428 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 457 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:25:57,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 853 flow [2024-06-28 03:25:57,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 807 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 03:25:57,441 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 585 flow [2024-06-28 03:25:57,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-28 03:25:57,443 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-28 03:25:57,443 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 585 flow [2024-06-28 03:25:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:57,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:57,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:25:57,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:57,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash -154186843, now seen corresponding path program 3 times [2024-06-28 03:25:57,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:57,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357218955] [2024-06-28 03:25:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:58,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:58,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357218955] [2024-06-28 03:25:58,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357218955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:58,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:58,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:25:58,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351966105] [2024-06-28 03:25:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:58,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:25:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:25:58,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:25:58,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:58,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 585 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:58,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:58,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:58,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:58,850 INFO L124 PetriNetUnfolderBase]: 2011/3107 cut-off events. [2024-06-28 03:25:58,851 INFO L125 PetriNetUnfolderBase]: For 24055/24081 co-relation queries the response was YES. [2024-06-28 03:25:58,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14083 conditions, 3107 events. 2011/3107 cut-off events. For 24055/24081 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15538 event pairs, 563 based on Foata normal form. 21/3098 useless extension candidates. Maximal degree in co-relation 14052. Up to 2591 conditions per place. [2024-06-28 03:25:58,869 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 68 selfloop transitions, 45 changer transitions 0/119 dead transitions. [2024-06-28 03:25:58,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 1079 flow [2024-06-28 03:25:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:25:58,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:25:58,870 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 585 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:25:58,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 1079 flow [2024-06-28 03:25:58,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 1025 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 03:25:58,883 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 745 flow [2024-06-28 03:25:58,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=745, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2024-06-28 03:25:58,884 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-28 03:25:58,884 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 745 flow [2024-06-28 03:25:58,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:58,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:58,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:25:58,885 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:58,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2129704241, now seen corresponding path program 4 times [2024-06-28 03:25:58,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:58,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364535730] [2024-06-28 03:25:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:58,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364535730] [2024-06-28 03:25:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364535730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:59,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:59,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:25:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853454385] [2024-06-28 03:25:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:59,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:25:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:25:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:25:59,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:59,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:59,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:59,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:00,022 INFO L124 PetriNetUnfolderBase]: 2066/3197 cut-off events. [2024-06-28 03:26:00,022 INFO L125 PetriNetUnfolderBase]: For 29219/29245 co-relation queries the response was YES. [2024-06-28 03:26:00,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15653 conditions, 3197 events. 2066/3197 cut-off events. For 29219/29245 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16084 event pairs, 607 based on Foata normal form. 15/3195 useless extension candidates. Maximal degree in co-relation 15619. Up to 2936 conditions per place. [2024-06-28 03:26:00,040 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 89 selfloop transitions, 39 changer transitions 0/134 dead transitions. [2024-06-28 03:26:00,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 134 transitions, 1227 flow [2024-06-28 03:26:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:26:00,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:26:00,042 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 745 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:26:00,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 134 transitions, 1227 flow [2024-06-28 03:26:00,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 1087 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:00,063 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 885 flow [2024-06-28 03:26:00,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=885, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2024-06-28 03:26:00,064 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-28 03:26:00,064 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 885 flow [2024-06-28 03:26:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:00,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:00,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:00,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:26:00,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:00,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1208214585, now seen corresponding path program 5 times [2024-06-28 03:26:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040187453] [2024-06-28 03:26:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:00,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:00,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:00,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040187453] [2024-06-28 03:26:00,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040187453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:00,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:00,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110426610] [2024-06-28 03:26:00,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:00,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:00,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:00,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:00,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:00,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:00,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:01,226 INFO L124 PetriNetUnfolderBase]: 2105/3256 cut-off events. [2024-06-28 03:26:01,226 INFO L125 PetriNetUnfolderBase]: For 33289/33313 co-relation queries the response was YES. [2024-06-28 03:26:01,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16477 conditions, 3256 events. 2105/3256 cut-off events. For 33289/33313 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16433 event pairs, 631 based on Foata normal form. 13/3255 useless extension candidates. Maximal degree in co-relation 16440. Up to 2965 conditions per place. [2024-06-28 03:26:01,246 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 99 selfloop transitions, 52 changer transitions 0/157 dead transitions. [2024-06-28 03:26:01,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 157 transitions, 1549 flow [2024-06-28 03:26:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:26:01,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-28 03:26:01,248 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 885 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:26:01,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 157 transitions, 1549 flow [2024-06-28 03:26:01,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 157 transitions, 1447 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 03:26:01,279 INFO L231 Difference]: Finished difference. Result has 95 places, 132 transitions, 1265 flow [2024-06-28 03:26:01,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1265, PETRI_PLACES=95, PETRI_TRANSITIONS=132} [2024-06-28 03:26:01,280 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-28 03:26:01,280 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 132 transitions, 1265 flow [2024-06-28 03:26:01,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:01,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:01,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:01,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:26:01,281 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:01,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:01,281 INFO L85 PathProgramCache]: Analyzing trace with hash -153940579, now seen corresponding path program 1 times [2024-06-28 03:26:01,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:01,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879176238] [2024-06-28 03:26:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:01,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:02,144 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 03:26:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879176238] [2024-06-28 03:26:02,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879176238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:02,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:02,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941652626] [2024-06-28 03:26:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:02,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:02,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:02,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:02,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 132 transitions, 1265 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:02,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:02,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:02,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:02,820 INFO L124 PetriNetUnfolderBase]: 2080/3288 cut-off events. [2024-06-28 03:26:02,820 INFO L125 PetriNetUnfolderBase]: For 32267/32267 co-relation queries the response was YES. [2024-06-28 03:26:02,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16283 conditions, 3288 events. 2080/3288 cut-off events. For 32267/32267 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16609 event pairs, 660 based on Foata normal form. 4/3274 useless extension candidates. Maximal degree in co-relation 16242. Up to 3032 conditions per place. [2024-06-28 03:26:02,845 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 135 selfloop transitions, 17 changer transitions 0/157 dead transitions. [2024-06-28 03:26:02,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 1677 flow [2024-06-28 03:26:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:26:02,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:26:02,847 INFO L175 Difference]: Start difference. First operand has 95 places, 132 transitions, 1265 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:26:02,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 1677 flow [2024-06-28 03:26:02,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 1600 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:02,880 INFO L231 Difference]: Finished difference. Result has 99 places, 134 transitions, 1263 flow [2024-06-28 03:26:02,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1263, PETRI_PLACES=99, PETRI_TRANSITIONS=134} [2024-06-28 03:26:02,881 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-28 03:26:02,881 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 134 transitions, 1263 flow [2024-06-28 03:26:02,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:02,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:02,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:26:02,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:02,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 323932773, now seen corresponding path program 1 times [2024-06-28 03:26:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:02,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703542001] [2024-06-28 03:26:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703542001] [2024-06-28 03:26:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703542001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:03,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:26:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085826583] [2024-06-28 03:26:03,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:03,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:26:03,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:03,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:26:03,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:26:03,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:03,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 134 transitions, 1263 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:03,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:03,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:03,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:03,923 INFO L124 PetriNetUnfolderBase]: 2077/3284 cut-off events. [2024-06-28 03:26:03,923 INFO L125 PetriNetUnfolderBase]: For 34139/34139 co-relation queries the response was YES. [2024-06-28 03:26:03,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16414 conditions, 3284 events. 2077/3284 cut-off events. For 34139/34139 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16485 event pairs, 664 based on Foata normal form. 1/3267 useless extension candidates. Maximal degree in co-relation 16373. Up to 3070 conditions per place. [2024-06-28 03:26:03,938 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 130 selfloop transitions, 9 changer transitions 0/144 dead transitions. [2024-06-28 03:26:03,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 144 transitions, 1585 flow [2024-06-28 03:26:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:26:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:26:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-28 03:26:03,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 03:26:03,940 INFO L175 Difference]: Start difference. First operand has 99 places, 134 transitions, 1263 flow. Second operand 5 states and 87 transitions. [2024-06-28 03:26:03,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 144 transitions, 1585 flow [2024-06-28 03:26:03,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 144 transitions, 1528 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:03,969 INFO L231 Difference]: Finished difference. Result has 98 places, 137 transitions, 1258 flow [2024-06-28 03:26:03,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1258, PETRI_PLACES=98, PETRI_TRANSITIONS=137} [2024-06-28 03:26:03,971 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-28 03:26:03,971 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 137 transitions, 1258 flow [2024-06-28 03:26:03,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:03,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:03,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:03,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:26:03,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:03,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash -718832398, now seen corresponding path program 1 times [2024-06-28 03:26:03,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:03,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66079017] [2024-06-28 03:26:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:04,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:04,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66079017] [2024-06-28 03:26:04,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66079017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:04,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:04,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119964922] [2024-06-28 03:26:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:04,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:05,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:05,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 137 transitions, 1258 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:05,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:05,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:05,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:05,695 INFO L124 PetriNetUnfolderBase]: 2112/3281 cut-off events. [2024-06-28 03:26:05,695 INFO L125 PetriNetUnfolderBase]: For 43947/43971 co-relation queries the response was YES. [2024-06-28 03:26:05,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17789 conditions, 3281 events. 2112/3281 cut-off events. For 43947/43971 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16480 event pairs, 575 based on Foata normal form. 11/3289 useless extension candidates. Maximal degree in co-relation 17747. Up to 2912 conditions per place. [2024-06-28 03:26:05,715 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 100 selfloop transitions, 59 changer transitions 0/165 dead transitions. [2024-06-28 03:26:05,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 165 transitions, 1735 flow [2024-06-28 03:26:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:26:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:26:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:26:05,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-28 03:26:05,717 INFO L175 Difference]: Start difference. First operand has 98 places, 137 transitions, 1258 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:26:05,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 165 transitions, 1735 flow [2024-06-28 03:26:05,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 165 transitions, 1705 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:26:05,748 INFO L231 Difference]: Finished difference. Result has 102 places, 140 transitions, 1444 flow [2024-06-28 03:26:05,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1444, PETRI_PLACES=102, PETRI_TRANSITIONS=140} [2024-06-28 03:26:05,749 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-28 03:26:05,749 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 140 transitions, 1444 flow [2024-06-28 03:26:05,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:05,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:05,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:05,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:26:05,750 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:05,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash -715017166, now seen corresponding path program 1 times [2024-06-28 03:26:05,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:05,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901537827] [2024-06-28 03:26:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:05,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:06,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901537827] [2024-06-28 03:26:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901537827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:06,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:06,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:06,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616173655] [2024-06-28 03:26:06,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:06,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:06,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:06,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:06,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:06,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:06,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 140 transitions, 1444 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:06,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:06,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:06,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:07,195 INFO L124 PetriNetUnfolderBase]: 2298/3499 cut-off events. [2024-06-28 03:26:07,195 INFO L125 PetriNetUnfolderBase]: For 48110/48110 co-relation queries the response was YES. [2024-06-28 03:26:07,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18921 conditions, 3499 events. 2298/3499 cut-off events. For 48110/48110 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16833 event pairs, 589 based on Foata normal form. 6/3502 useless extension candidates. Maximal degree in co-relation 18878. Up to 2908 conditions per place. [2024-06-28 03:26:07,217 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 102 selfloop transitions, 82 changer transitions 0/188 dead transitions. [2024-06-28 03:26:07,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 188 transitions, 2167 flow [2024-06-28 03:26:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:26:07,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:26:07,218 INFO L175 Difference]: Start difference. First operand has 102 places, 140 transitions, 1444 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:26:07,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 188 transitions, 2167 flow [2024-06-28 03:26:07,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 188 transitions, 1983 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:07,267 INFO L231 Difference]: Finished difference. Result has 106 places, 160 transitions, 1718 flow [2024-06-28 03:26:07,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1718, PETRI_PLACES=106, PETRI_TRANSITIONS=160} [2024-06-28 03:26:07,267 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-28 03:26:07,267 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 160 transitions, 1718 flow [2024-06-28 03:26:07,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:07,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:07,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:07,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:26:07,268 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:07,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash 488711218, now seen corresponding path program 2 times [2024-06-28 03:26:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:07,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217213095] [2024-06-28 03:26:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:08,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217213095] [2024-06-28 03:26:08,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217213095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:08,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207014182] [2024-06-28 03:26:08,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:08,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:08,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:08,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 160 transitions, 1718 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:08,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:08,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:08,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:08,932 INFO L124 PetriNetUnfolderBase]: 2309/3518 cut-off events. [2024-06-28 03:26:08,932 INFO L125 PetriNetUnfolderBase]: For 43944/43950 co-relation queries the response was YES. [2024-06-28 03:26:08,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18850 conditions, 3518 events. 2309/3518 cut-off events. For 43944/43950 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16980 event pairs, 597 based on Foata normal form. 6/3507 useless extension candidates. Maximal degree in co-relation 18805. Up to 2779 conditions per place. [2024-06-28 03:26:08,954 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 91 selfloop transitions, 103 changer transitions 0/198 dead transitions. [2024-06-28 03:26:08,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 198 transitions, 2359 flow [2024-06-28 03:26:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:26:08,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 03:26:08,957 INFO L175 Difference]: Start difference. First operand has 106 places, 160 transitions, 1718 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:26:08,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 198 transitions, 2359 flow [2024-06-28 03:26:08,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 198 transitions, 2253 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:08,994 INFO L231 Difference]: Finished difference. Result has 111 places, 169 transitions, 1945 flow [2024-06-28 03:26:08,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1945, PETRI_PLACES=111, PETRI_TRANSITIONS=169} [2024-06-28 03:26:08,995 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2024-06-28 03:26:08,995 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 169 transitions, 1945 flow [2024-06-28 03:26:08,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:08,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:08,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:26:08,996 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:08,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:08,996 INFO L85 PathProgramCache]: Analyzing trace with hash -477466502, now seen corresponding path program 3 times [2024-06-28 03:26:08,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:08,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293791621] [2024-06-28 03:26:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:10,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:10,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293791621] [2024-06-28 03:26:10,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293791621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:10,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315594921] [2024-06-28 03:26:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:10,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:10,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:10,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:10,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 169 transitions, 1945 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:10,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:10,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:10,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:10,745 INFO L124 PetriNetUnfolderBase]: 2375/3614 cut-off events. [2024-06-28 03:26:10,746 INFO L125 PetriNetUnfolderBase]: For 49392/49398 co-relation queries the response was YES. [2024-06-28 03:26:10,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20288 conditions, 3614 events. 2375/3614 cut-off events. For 49392/49398 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 17420 event pairs, 597 based on Foata normal form. 10/3607 useless extension candidates. Maximal degree in co-relation 20240. Up to 2964 conditions per place. [2024-06-28 03:26:10,773 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 104 selfloop transitions, 99 changer transitions 0/207 dead transitions. [2024-06-28 03:26:10,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 207 transitions, 2578 flow [2024-06-28 03:26:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:26:10,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 03:26:10,775 INFO L175 Difference]: Start difference. First operand has 111 places, 169 transitions, 1945 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:26:10,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 207 transitions, 2578 flow [2024-06-28 03:26:10,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 207 transitions, 2515 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 03:26:10,819 INFO L231 Difference]: Finished difference. Result has 117 places, 178 transitions, 2194 flow [2024-06-28 03:26:10,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2194, PETRI_PLACES=117, PETRI_TRANSITIONS=178} [2024-06-28 03:26:10,820 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-28 03:26:10,820 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 178 transitions, 2194 flow [2024-06-28 03:26:10,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:10,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:10,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:10,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:26:10,821 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:10,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash -571126636, now seen corresponding path program 4 times [2024-06-28 03:26:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124339423] [2024-06-28 03:26:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:10,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:11,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124339423] [2024-06-28 03:26:11,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124339423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:11,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:11,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:11,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675708642] [2024-06-28 03:26:11,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:11,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:11,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:11,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:11,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:11,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:11,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 178 transitions, 2194 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:11,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:11,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:12,532 INFO L124 PetriNetUnfolderBase]: 2354/3583 cut-off events. [2024-06-28 03:26:12,533 INFO L125 PetriNetUnfolderBase]: For 53896/53902 co-relation queries the response was YES. [2024-06-28 03:26:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20542 conditions, 3583 events. 2354/3583 cut-off events. For 53896/53902 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 17239 event pairs, 631 based on Foata normal form. 10/3576 useless extension candidates. Maximal degree in co-relation 20492. Up to 2933 conditions per place. [2024-06-28 03:26:12,552 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 103 selfloop transitions, 98 changer transitions 0/205 dead transitions. [2024-06-28 03:26:12,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 205 transitions, 2712 flow [2024-06-28 03:26:12,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:26:12,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 03:26:12,553 INFO L175 Difference]: Start difference. First operand has 117 places, 178 transitions, 2194 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:26:12,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 205 transitions, 2712 flow [2024-06-28 03:26:12,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 205 transitions, 2462 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:12,601 INFO L231 Difference]: Finished difference. Result has 120 places, 178 transitions, 2150 flow [2024-06-28 03:26:12,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2150, PETRI_PLACES=120, PETRI_TRANSITIONS=178} [2024-06-28 03:26:12,601 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 77 predicate places. [2024-06-28 03:26:12,602 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 178 transitions, 2150 flow [2024-06-28 03:26:12,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:12,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:12,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:12,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:26:12,602 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:12,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:12,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1451982775, now seen corresponding path program 1 times [2024-06-28 03:26:12,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:12,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733744174] [2024-06-28 03:26:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733744174] [2024-06-28 03:26:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733744174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:13,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:13,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:26:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739131306] [2024-06-28 03:26:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:26:13,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:26:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:26:13,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:13,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 178 transitions, 2150 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:26:13,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:13,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:13,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:13,876 INFO L124 PetriNetUnfolderBase]: 2351/3597 cut-off events. [2024-06-28 03:26:13,876 INFO L125 PetriNetUnfolderBase]: For 57008/57008 co-relation queries the response was YES. [2024-06-28 03:26:13,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20567 conditions, 3597 events. 2351/3597 cut-off events. For 57008/57008 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 17421 event pairs, 691 based on Foata normal form. 1/3595 useless extension candidates. Maximal degree in co-relation 20516. Up to 3459 conditions per place. [2024-06-28 03:26:13,897 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 173 selfloop transitions, 12 changer transitions 0/189 dead transitions. [2024-06-28 03:26:13,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 189 transitions, 2570 flow [2024-06-28 03:26:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:26:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:26:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 03:26:13,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-06-28 03:26:13,898 INFO L175 Difference]: Start difference. First operand has 120 places, 178 transitions, 2150 flow. Second operand 6 states and 95 transitions. [2024-06-28 03:26:13,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 189 transitions, 2570 flow [2024-06-28 03:26:13,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 189 transitions, 2265 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:26:13,955 INFO L231 Difference]: Finished difference. Result has 117 places, 181 transitions, 1907 flow [2024-06-28 03:26:13,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1907, PETRI_PLACES=117, PETRI_TRANSITIONS=181} [2024-06-28 03:26:13,955 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-28 03:26:13,956 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 181 transitions, 1907 flow [2024-06-28 03:26:13,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:26:13,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:13,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:13,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:26:13,956 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:13,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash -308839502, now seen corresponding path program 1 times [2024-06-28 03:26:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:13,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818848438] [2024-06-28 03:26:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:13,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:15,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818848438] [2024-06-28 03:26:15,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818848438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:15,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:15,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:15,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688422261] [2024-06-28 03:26:15,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:15,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:15,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:15,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 181 transitions, 1907 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:15,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:15,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:15,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:15,795 INFO L124 PetriNetUnfolderBase]: 2255/3470 cut-off events. [2024-06-28 03:26:15,796 INFO L125 PetriNetUnfolderBase]: For 68396/68400 co-relation queries the response was YES. [2024-06-28 03:26:15,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20877 conditions, 3470 events. 2255/3470 cut-off events. For 68396/68400 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17270 event pairs, 426 based on Foata normal form. 8/3474 useless extension candidates. Maximal degree in co-relation 20827. Up to 3112 conditions per place. [2024-06-28 03:26:15,818 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 162 selfloop transitions, 42 changer transitions 0/213 dead transitions. [2024-06-28 03:26:15,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 213 transitions, 2466 flow [2024-06-28 03:26:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:26:15,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 03:26:15,820 INFO L175 Difference]: Start difference. First operand has 117 places, 181 transitions, 1907 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:26:15,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 213 transitions, 2466 flow [2024-06-28 03:26:15,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 213 transitions, 2426 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:15,886 INFO L231 Difference]: Finished difference. Result has 121 places, 183 transitions, 2002 flow [2024-06-28 03:26:15,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2002, PETRI_PLACES=121, PETRI_TRANSITIONS=183} [2024-06-28 03:26:15,887 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-28 03:26:15,887 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 183 transitions, 2002 flow [2024-06-28 03:26:15,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:15,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:15,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:15,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:26:15,888 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:15,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -808967094, now seen corresponding path program 2 times [2024-06-28 03:26:15,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:15,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454427019] [2024-06-28 03:26:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454427019] [2024-06-28 03:26:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454427019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:16,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122792798] [2024-06-28 03:26:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:16,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:17,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:17,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 183 transitions, 2002 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:17,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:17,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:17,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:17,757 INFO L124 PetriNetUnfolderBase]: 2284/3524 cut-off events. [2024-06-28 03:26:17,757 INFO L125 PetriNetUnfolderBase]: For 77169/77173 co-relation queries the response was YES. [2024-06-28 03:26:17,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21797 conditions, 3524 events. 2284/3524 cut-off events. For 77169/77173 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17664 event pairs, 530 based on Foata normal form. 12/3533 useless extension candidates. Maximal degree in co-relation 21746. Up to 3033 conditions per place. [2024-06-28 03:26:17,780 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 131 selfloop transitions, 75 changer transitions 0/215 dead transitions. [2024-06-28 03:26:17,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 215 transitions, 2575 flow [2024-06-28 03:26:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:26:17,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:26:17,781 INFO L175 Difference]: Start difference. First operand has 121 places, 183 transitions, 2002 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:26:17,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 215 transitions, 2575 flow [2024-06-28 03:26:17,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 215 transitions, 2458 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:17,851 INFO L231 Difference]: Finished difference. Result has 123 places, 185 transitions, 2103 flow [2024-06-28 03:26:17,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2103, PETRI_PLACES=123, PETRI_TRANSITIONS=185} [2024-06-28 03:26:17,851 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-28 03:26:17,852 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 185 transitions, 2103 flow [2024-06-28 03:26:17,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:17,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:17,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:26:17,852 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:17,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash -193245524, now seen corresponding path program 1 times [2024-06-28 03:26:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517725315] [2024-06-28 03:26:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:18,824 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 03:26:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:18,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517725315] [2024-06-28 03:26:18,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517725315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:18,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:18,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122676544] [2024-06-28 03:26:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:18,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:18,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:18,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 185 transitions, 2103 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:18,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:18,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:18,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:19,728 INFO L124 PetriNetUnfolderBase]: 2583/3928 cut-off events. [2024-06-28 03:26:19,728 INFO L125 PetriNetUnfolderBase]: For 90844/90844 co-relation queries the response was YES. [2024-06-28 03:26:19,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23812 conditions, 3928 events. 2583/3928 cut-off events. For 90844/90844 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19403 event pairs, 596 based on Foata normal form. 24/3949 useless extension candidates. Maximal degree in co-relation 23760. Up to 3180 conditions per place. [2024-06-28 03:26:19,755 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 135 selfloop transitions, 84 changer transitions 0/224 dead transitions. [2024-06-28 03:26:19,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 224 transitions, 2734 flow [2024-06-28 03:26:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:26:19,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:26:19,756 INFO L175 Difference]: Start difference. First operand has 123 places, 185 transitions, 2103 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:26:19,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 224 transitions, 2734 flow [2024-06-28 03:26:19,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 224 transitions, 2560 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:19,850 INFO L231 Difference]: Finished difference. Result has 126 places, 187 transitions, 2149 flow [2024-06-28 03:26:19,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2149, PETRI_PLACES=126, PETRI_TRANSITIONS=187} [2024-06-28 03:26:19,850 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-28 03:26:19,850 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 187 transitions, 2149 flow [2024-06-28 03:26:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:19,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:19,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:19,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:26:19,851 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:19,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash -193430222, now seen corresponding path program 3 times [2024-06-28 03:26:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:19,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960245244] [2024-06-28 03:26:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:19,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:20,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:20,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960245244] [2024-06-28 03:26:20,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960245244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:20,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:20,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053627735] [2024-06-28 03:26:20,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:20,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:20,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:20,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:20,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 187 transitions, 2149 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:20,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:20,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:20,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:21,555 INFO L124 PetriNetUnfolderBase]: 2480/3851 cut-off events. [2024-06-28 03:26:21,556 INFO L125 PetriNetUnfolderBase]: For 102167/102167 co-relation queries the response was YES. [2024-06-28 03:26:21,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24584 conditions, 3851 events. 2480/3851 cut-off events. For 102167/102167 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19803 event pairs, 566 based on Foata normal form. 28/3876 useless extension candidates. Maximal degree in co-relation 24531. Up to 3144 conditions per place. [2024-06-28 03:26:21,584 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 132 selfloop transitions, 79 changer transitions 0/220 dead transitions. [2024-06-28 03:26:21,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 220 transitions, 2745 flow [2024-06-28 03:26:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:26:21,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 03:26:21,585 INFO L175 Difference]: Start difference. First operand has 126 places, 187 transitions, 2149 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:26:21,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 220 transitions, 2745 flow [2024-06-28 03:26:21,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 220 transitions, 2553 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:26:21,679 INFO L231 Difference]: Finished difference. Result has 127 places, 189 transitions, 2179 flow [2024-06-28 03:26:21,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2179, PETRI_PLACES=127, PETRI_TRANSITIONS=189} [2024-06-28 03:26:21,680 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-28 03:26:21,680 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 189 transitions, 2179 flow [2024-06-28 03:26:21,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:21,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:21,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:26:21,681 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:21,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2050352772, now seen corresponding path program 1 times [2024-06-28 03:26:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:21,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706468781] [2024-06-28 03:26:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706468781] [2024-06-28 03:26:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706468781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:22,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:26:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421740024] [2024-06-28 03:26:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:22,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:26:22,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:26:22,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:26:22,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:22,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 189 transitions, 2179 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:26:22,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:22,960 INFO L124 PetriNetUnfolderBase]: 2738/4156 cut-off events. [2024-06-28 03:26:22,960 INFO L125 PetriNetUnfolderBase]: For 101696/101700 co-relation queries the response was YES. [2024-06-28 03:26:22,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25723 conditions, 4156 events. 2738/4156 cut-off events. For 101696/101700 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20528 event pairs, 696 based on Foata normal form. 5/4158 useless extension candidates. Maximal degree in co-relation 25669. Up to 3989 conditions per place. [2024-06-28 03:26:22,988 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 182 selfloop transitions, 24 changer transitions 0/211 dead transitions. [2024-06-28 03:26:22,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 211 transitions, 2764 flow [2024-06-28 03:26:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:26:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:26:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 03:26:22,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 03:26:22,989 INFO L175 Difference]: Start difference. First operand has 127 places, 189 transitions, 2179 flow. Second operand 6 states and 104 transitions. [2024-06-28 03:26:22,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 211 transitions, 2764 flow [2024-06-28 03:26:23,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 211 transitions, 2576 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:23,117 INFO L231 Difference]: Finished difference. Result has 127 places, 195 transitions, 2117 flow [2024-06-28 03:26:23,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2117, PETRI_PLACES=127, PETRI_TRANSITIONS=195} [2024-06-28 03:26:23,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-28 03:26:23,117 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 195 transitions, 2117 flow [2024-06-28 03:26:23,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:26:23,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:23,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:23,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:26:23,118 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:23,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:23,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2028971460, now seen corresponding path program 2 times [2024-06-28 03:26:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:23,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513241823] [2024-06-28 03:26:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:23,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:24,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513241823] [2024-06-28 03:26:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513241823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:24,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:24,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819222961] [2024-06-28 03:26:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:24,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:24,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:24,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 195 transitions, 2117 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:24,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:24,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:24,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:25,046 INFO L124 PetriNetUnfolderBase]: 2830/4310 cut-off events. [2024-06-28 03:26:25,046 INFO L125 PetriNetUnfolderBase]: For 114292/114298 co-relation queries the response was YES. [2024-06-28 03:26:25,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26593 conditions, 4310 events. 2830/4310 cut-off events. For 114292/114298 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21594 event pairs, 674 based on Foata normal form. 28/4321 useless extension candidates. Maximal degree in co-relation 26538. Up to 3503 conditions per place. [2024-06-28 03:26:25,075 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 128 selfloop transitions, 100 changer transitions 0/233 dead transitions. [2024-06-28 03:26:25,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 233 transitions, 2776 flow [2024-06-28 03:26:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:26:25,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 03:26:25,077 INFO L175 Difference]: Start difference. First operand has 127 places, 195 transitions, 2117 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:26:25,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 233 transitions, 2776 flow [2024-06-28 03:26:25,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 233 transitions, 2737 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 03:26:25,172 INFO L231 Difference]: Finished difference. Result has 134 places, 197 transitions, 2338 flow [2024-06-28 03:26:25,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2338, PETRI_PLACES=134, PETRI_TRANSITIONS=197} [2024-06-28 03:26:25,173 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-28 03:26:25,173 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 197 transitions, 2338 flow [2024-06-28 03:26:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:25,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:25,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:25,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:26:25,174 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:25,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:25,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2028786762, now seen corresponding path program 4 times [2024-06-28 03:26:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:25,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258671088] [2024-06-28 03:26:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:25,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:26,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:26,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258671088] [2024-06-28 03:26:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258671088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:26,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561491113] [2024-06-28 03:26:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:26,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:26,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 197 transitions, 2338 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:26,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:26,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:26,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:27,113 INFO L124 PetriNetUnfolderBase]: 2677/4155 cut-off events. [2024-06-28 03:26:27,113 INFO L125 PetriNetUnfolderBase]: For 128180/128210 co-relation queries the response was YES. [2024-06-28 03:26:27,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27218 conditions, 4155 events. 2677/4155 cut-off events. For 128180/128210 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21673 event pairs, 593 based on Foata normal form. 37/4175 useless extension candidates. Maximal degree in co-relation 27161. Up to 3267 conditions per place. [2024-06-28 03:26:27,146 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 113 selfloop transitions, 107 changer transitions 0/229 dead transitions. [2024-06-28 03:26:27,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 229 transitions, 2960 flow [2024-06-28 03:26:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:26:27,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-28 03:26:27,147 INFO L175 Difference]: Start difference. First operand has 134 places, 197 transitions, 2338 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:26:27,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 229 transitions, 2960 flow [2024-06-28 03:26:27,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 229 transitions, 2728 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:26:27,268 INFO L231 Difference]: Finished difference. Result has 135 places, 199 transitions, 2391 flow [2024-06-28 03:26:27,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2391, PETRI_PLACES=135, PETRI_TRANSITIONS=199} [2024-06-28 03:26:27,268 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2024-06-28 03:26:27,269 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 199 transitions, 2391 flow [2024-06-28 03:26:27,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:26:27,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:27,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:27,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:26:27,269 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:27,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2038094686, now seen corresponding path program 3 times [2024-06-28 03:26:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:27,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901386691] [2024-06-28 03:26:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:28,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901386691] [2024-06-28 03:26:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901386691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259851484] [2024-06-28 03:26:28,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:28,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:28,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 199 transitions, 2391 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:28,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:28,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:28,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:28,984 INFO L124 PetriNetUnfolderBase]: 2981/4563 cut-off events. [2024-06-28 03:26:28,984 INFO L125 PetriNetUnfolderBase]: For 134926/134932 co-relation queries the response was YES. [2024-06-28 03:26:29,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28967 conditions, 4563 events. 2981/4563 cut-off events. For 134926/134932 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23506 event pairs, 666 based on Foata normal form. 28/4574 useless extension candidates. Maximal degree in co-relation 28909. Up to 3756 conditions per place. [2024-06-28 03:26:29,020 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 133 selfloop transitions, 101 changer transitions 0/239 dead transitions. [2024-06-28 03:26:29,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 239 transitions, 3086 flow [2024-06-28 03:26:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:26:29,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-28 03:26:29,022 INFO L175 Difference]: Start difference. First operand has 135 places, 199 transitions, 2391 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:26:29,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 239 transitions, 3086 flow [2024-06-28 03:26:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 239 transitions, 2833 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:29,190 INFO L231 Difference]: Finished difference. Result has 138 places, 201 transitions, 2410 flow [2024-06-28 03:26:29,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2410, PETRI_PLACES=138, PETRI_TRANSITIONS=201} [2024-06-28 03:26:29,190 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-28 03:26:29,191 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 201 transitions, 2410 flow [2024-06-28 03:26:29,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:29,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:29,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:29,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:26:29,191 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:29,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2029820476, now seen corresponding path program 4 times [2024-06-28 03:26:29,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:29,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666387995] [2024-06-28 03:26:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:30,194 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 03:26:30,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666387995] [2024-06-28 03:26:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666387995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:30,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903517569] [2024-06-28 03:26:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:30,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:30,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:30,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 201 transitions, 2410 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:30,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:30,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:30,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:31,131 INFO L124 PetriNetUnfolderBase]: 2998/4590 cut-off events. [2024-06-28 03:26:31,131 INFO L125 PetriNetUnfolderBase]: For 134497/134503 co-relation queries the response was YES. [2024-06-28 03:26:31,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29293 conditions, 4590 events. 2998/4590 cut-off events. For 134497/134503 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23722 event pairs, 671 based on Foata normal form. 8/4581 useless extension candidates. Maximal degree in co-relation 29234. Up to 3768 conditions per place. [2024-06-28 03:26:31,228 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 113 selfloop transitions, 117 changer transitions 0/235 dead transitions. [2024-06-28 03:26:31,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 235 transitions, 3058 flow [2024-06-28 03:26:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:26:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:26:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 03:26:31,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 03:26:31,229 INFO L175 Difference]: Start difference. First operand has 138 places, 201 transitions, 2410 flow. Second operand 10 states and 171 transitions. [2024-06-28 03:26:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 235 transitions, 3058 flow [2024-06-28 03:26:31,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 235 transitions, 2818 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:26:31,377 INFO L231 Difference]: Finished difference. Result has 141 places, 203 transitions, 2473 flow [2024-06-28 03:26:31,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2473, PETRI_PLACES=141, PETRI_TRANSITIONS=203} [2024-06-28 03:26:31,378 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 03:26:31,378 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 203 transitions, 2473 flow [2024-06-28 03:26:31,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:31,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:31,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:31,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:26:31,379 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:31,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:31,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1907987844, now seen corresponding path program 5 times [2024-06-28 03:26:31,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:31,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097248098] [2024-06-28 03:26:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:31,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:32,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:32,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097248098] [2024-06-28 03:26:32,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097248098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:32,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:32,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644053870] [2024-06-28 03:26:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:32,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:32,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:32,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 203 transitions, 2473 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:32,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:32,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:32,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:33,181 INFO L124 PetriNetUnfolderBase]: 2990/4578 cut-off events. [2024-06-28 03:26:33,182 INFO L125 PetriNetUnfolderBase]: For 138268/138274 co-relation queries the response was YES. [2024-06-28 03:26:33,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29228 conditions, 4578 events. 2990/4578 cut-off events. For 138268/138274 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23535 event pairs, 574 based on Foata normal form. 8/4569 useless extension candidates. Maximal degree in co-relation 29168. Up to 3301 conditions per place. [2024-06-28 03:26:33,215 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 111 selfloop transitions, 126 changer transitions 0/242 dead transitions. [2024-06-28 03:26:33,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 242 transitions, 3165 flow [2024-06-28 03:26:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:26:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:26:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 03:26:33,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 03:26:33,217 INFO L175 Difference]: Start difference. First operand has 141 places, 203 transitions, 2473 flow. Second operand 10 states and 176 transitions. [2024-06-28 03:26:33,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 242 transitions, 3165 flow [2024-06-28 03:26:33,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 242 transitions, 2880 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:26:33,333 INFO L231 Difference]: Finished difference. Result has 143 places, 205 transitions, 2513 flow [2024-06-28 03:26:33,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2513, PETRI_PLACES=143, PETRI_TRANSITIONS=205} [2024-06-28 03:26:33,334 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-28 03:26:33,334 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 205 transitions, 2513 flow [2024-06-28 03:26:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:33,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:33,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:33,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:26:33,334 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:33,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1762190974, now seen corresponding path program 2 times [2024-06-28 03:26:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882325137] [2024-06-28 03:26:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:33,824 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 03:26:33,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:33,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882325137] [2024-06-28 03:26:33,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882325137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:33,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:33,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:26:33,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808442213] [2024-06-28 03:26:33,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:33,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:26:33,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:26:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:26:33,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:33,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 205 transitions, 2513 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:26:33,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:33,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:33,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:34,577 INFO L124 PetriNetUnfolderBase]: 2987/4571 cut-off events. [2024-06-28 03:26:34,577 INFO L125 PetriNetUnfolderBase]: For 145693/145705 co-relation queries the response was YES. [2024-06-28 03:26:34,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29568 conditions, 4571 events. 2987/4571 cut-off events. For 145693/145705 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23488 event pairs, 759 based on Foata normal form. 9/4573 useless extension candidates. Maximal degree in co-relation 29507. Up to 4406 conditions per place. [2024-06-28 03:26:34,614 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 187 selfloop transitions, 23 changer transitions 0/215 dead transitions. [2024-06-28 03:26:34,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 215 transitions, 2978 flow [2024-06-28 03:26:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:26:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:26:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 03:26:34,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38492063492063494 [2024-06-28 03:26:34,616 INFO L175 Difference]: Start difference. First operand has 143 places, 205 transitions, 2513 flow. Second operand 6 states and 97 transitions. [2024-06-28 03:26:34,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 215 transitions, 2978 flow [2024-06-28 03:26:34,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 215 transitions, 2651 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 03:26:34,751 INFO L231 Difference]: Finished difference. Result has 141 places, 205 transitions, 2240 flow [2024-06-28 03:26:34,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2240, PETRI_PLACES=141, PETRI_TRANSITIONS=205} [2024-06-28 03:26:34,751 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 03:26:34,752 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 205 transitions, 2240 flow [2024-06-28 03:26:34,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:26:34,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:34,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:26:34,752 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:34,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2056072644, now seen corresponding path program 1 times [2024-06-28 03:26:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739445282] [2024-06-28 03:26:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739445282] [2024-06-28 03:26:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739445282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253136116] [2024-06-28 03:26:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:35,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:35,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:35,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:35,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 205 transitions, 2240 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:35,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:35,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:35,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:36,147 INFO L124 PetriNetUnfolderBase]: 2740/4298 cut-off events. [2024-06-28 03:26:36,147 INFO L125 PetriNetUnfolderBase]: For 129886/129886 co-relation queries the response was YES. [2024-06-28 03:26:36,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26513 conditions, 4298 events. 2740/4298 cut-off events. For 129886/129886 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22791 event pairs, 700 based on Foata normal form. 1/4296 useless extension candidates. Maximal degree in co-relation 26451. Up to 4069 conditions per place. [2024-06-28 03:26:36,178 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 200 selfloop transitions, 17 changer transitions 0/223 dead transitions. [2024-06-28 03:26:36,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 223 transitions, 2820 flow [2024-06-28 03:26:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:26:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:26:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:26:36,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:26:36,179 INFO L175 Difference]: Start difference. First operand has 141 places, 205 transitions, 2240 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:26:36,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 223 transitions, 2820 flow [2024-06-28 03:26:36,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 223 transitions, 2758 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:36,355 INFO L231 Difference]: Finished difference. Result has 142 places, 211 transitions, 2272 flow [2024-06-28 03:26:36,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2272, PETRI_PLACES=142, PETRI_TRANSITIONS=211} [2024-06-28 03:26:36,356 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-28 03:26:36,356 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 211 transitions, 2272 flow [2024-06-28 03:26:36,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:36,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:36,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:36,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:26:36,357 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1746097882, now seen corresponding path program 2 times [2024-06-28 03:26:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:36,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243924714] [2024-06-28 03:26:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:36,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243924714] [2024-06-28 03:26:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243924714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:37,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:37,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723508201] [2024-06-28 03:26:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:37,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:37,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:37,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:37,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 211 transitions, 2272 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:37,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:37,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:37,701 INFO L124 PetriNetUnfolderBase]: 2737/4294 cut-off events. [2024-06-28 03:26:37,701 INFO L125 PetriNetUnfolderBase]: For 136661/136661 co-relation queries the response was YES. [2024-06-28 03:26:37,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26996 conditions, 4294 events. 2737/4294 cut-off events. For 136661/136661 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22777 event pairs, 699 based on Foata normal form. 1/4292 useless extension candidates. Maximal degree in co-relation 26933. Up to 4078 conditions per place. [2024-06-28 03:26:37,732 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 201 selfloop transitions, 12 changer transitions 0/219 dead transitions. [2024-06-28 03:26:37,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 219 transitions, 2722 flow [2024-06-28 03:26:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:26:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:26:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 03:26:37,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 03:26:37,734 INFO L175 Difference]: Start difference. First operand has 142 places, 211 transitions, 2272 flow. Second operand 6 states and 100 transitions. [2024-06-28 03:26:37,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 219 transitions, 2722 flow [2024-06-28 03:26:37,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 219 transitions, 2681 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 03:26:37,934 INFO L231 Difference]: Finished difference. Result has 146 places, 211 transitions, 2261 flow [2024-06-28 03:26:37,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2261, PETRI_PLACES=146, PETRI_TRANSITIONS=211} [2024-06-28 03:26:37,935 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-28 03:26:37,935 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 211 transitions, 2261 flow [2024-06-28 03:26:37,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:37,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:37,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:37,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:26:37,935 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:37,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2061794500, now seen corresponding path program 1 times [2024-06-28 03:26:37,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:37,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465495908] [2024-06-28 03:26:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:37,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:38,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465495908] [2024-06-28 03:26:38,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465495908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:38,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:38,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:38,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272559813] [2024-06-28 03:26:38,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:38,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:38,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:38,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:38,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:38,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 211 transitions, 2261 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:38,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:38,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:38,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:39,280 INFO L124 PetriNetUnfolderBase]: 2870/4425 cut-off events. [2024-06-28 03:26:39,281 INFO L125 PetriNetUnfolderBase]: For 143508/143508 co-relation queries the response was YES. [2024-06-28 03:26:39,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27886 conditions, 4425 events. 2870/4425 cut-off events. For 143508/143508 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 22852 event pairs, 736 based on Foata normal form. 2/4424 useless extension candidates. Maximal degree in co-relation 27821. Up to 4310 conditions per place. [2024-06-28 03:26:39,312 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 205 selfloop transitions, 15 changer transitions 0/224 dead transitions. [2024-06-28 03:26:39,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 224 transitions, 2763 flow [2024-06-28 03:26:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:26:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:26:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 03:26:39,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2024-06-28 03:26:39,314 INFO L175 Difference]: Start difference. First operand has 146 places, 211 transitions, 2261 flow. Second operand 7 states and 108 transitions. [2024-06-28 03:26:39,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 224 transitions, 2763 flow [2024-06-28 03:26:39,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 224 transitions, 2731 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:39,440 INFO L231 Difference]: Finished difference. Result has 148 places, 214 transitions, 2305 flow [2024-06-28 03:26:39,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2305, PETRI_PLACES=148, PETRI_TRANSITIONS=214} [2024-06-28 03:26:39,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-28 03:26:39,441 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 214 transitions, 2305 flow [2024-06-28 03:26:39,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:39,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:39,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:39,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:26:39,441 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:39,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1695643246, now seen corresponding path program 1 times [2024-06-28 03:26:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:39,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990943518] [2024-06-28 03:26:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:40,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:40,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990943518] [2024-06-28 03:26:40,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990943518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:40,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:40,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:26:40,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641557446] [2024-06-28 03:26:40,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:40,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:26:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:26:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:26:40,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:40,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 214 transitions, 2305 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:26:40,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:40,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:40,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:41,367 INFO L124 PetriNetUnfolderBase]: 3133/4817 cut-off events. [2024-06-28 03:26:41,368 INFO L125 PetriNetUnfolderBase]: For 188769/188769 co-relation queries the response was YES. [2024-06-28 03:26:41,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32033 conditions, 4817 events. 3133/4817 cut-off events. For 188769/188769 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 25277 event pairs, 713 based on Foata normal form. 16/4830 useless extension candidates. Maximal degree in co-relation 31967. Up to 3674 conditions per place. [2024-06-28 03:26:41,471 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 172 selfloop transitions, 90 changer transitions 0/267 dead transitions. [2024-06-28 03:26:41,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 267 transitions, 3248 flow [2024-06-28 03:26:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:26:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:26:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 03:26:41,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 03:26:41,473 INFO L175 Difference]: Start difference. First operand has 148 places, 214 transitions, 2305 flow. Second operand 10 states and 182 transitions. [2024-06-28 03:26:41,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 267 transitions, 3248 flow [2024-06-28 03:26:41,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 267 transitions, 3194 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:41,702 INFO L231 Difference]: Finished difference. Result has 154 places, 218 transitions, 2560 flow [2024-06-28 03:26:41,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2560, PETRI_PLACES=154, PETRI_TRANSITIONS=218} [2024-06-28 03:26:41,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-28 03:26:41,703 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 218 transitions, 2560 flow [2024-06-28 03:26:41,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:26:41,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:41,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:41,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:26:41,704 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:41,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -868587066, now seen corresponding path program 1 times [2024-06-28 03:26:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557608487] [2024-06-28 03:26:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:42,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:42,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557608487] [2024-06-28 03:26:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557608487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:42,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707333778] [2024-06-28 03:26:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:42,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:42,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:42,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 218 transitions, 2560 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:42,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:42,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:42,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:43,391 INFO L124 PetriNetUnfolderBase]: 3143/4836 cut-off events. [2024-06-28 03:26:43,391 INFO L125 PetriNetUnfolderBase]: For 195728/195732 co-relation queries the response was YES. [2024-06-28 03:26:43,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32935 conditions, 4836 events. 3143/4836 cut-off events. For 195728/195732 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 25395 event pairs, 801 based on Foata normal form. 6/4839 useless extension candidates. Maximal degree in co-relation 32867. Up to 4550 conditions per place. [2024-06-28 03:26:43,422 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 194 selfloop transitions, 49 changer transitions 0/248 dead transitions. [2024-06-28 03:26:43,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 248 transitions, 3281 flow [2024-06-28 03:26:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:26:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:26:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:26:43,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-28 03:26:43,423 INFO L175 Difference]: Start difference. First operand has 154 places, 218 transitions, 2560 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:26:43,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 248 transitions, 3281 flow [2024-06-28 03:26:43,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 248 transitions, 3153 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:43,655 INFO L231 Difference]: Finished difference. Result has 156 places, 224 transitions, 2618 flow [2024-06-28 03:26:43,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2618, PETRI_PLACES=156, PETRI_TRANSITIONS=224} [2024-06-28 03:26:43,656 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-28 03:26:43,656 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 224 transitions, 2618 flow [2024-06-28 03:26:43,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:43,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:43,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:43,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:26:43,657 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:43,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash -863572104, now seen corresponding path program 1 times [2024-06-28 03:26:43,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:43,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555520790] [2024-06-28 03:26:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:43,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:44,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:44,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555520790] [2024-06-28 03:26:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555520790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:44,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85947599] [2024-06-28 03:26:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:44,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:44,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:44,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:44,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:26:44,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 224 transitions, 2618 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:44,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:44,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:26:44,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:45,275 INFO L124 PetriNetUnfolderBase]: 3287/4978 cut-off events. [2024-06-28 03:26:45,275 INFO L125 PetriNetUnfolderBase]: For 202002/202006 co-relation queries the response was YES. [2024-06-28 03:26:45,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34185 conditions, 4978 events. 3287/4978 cut-off events. For 202002/202006 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 25522 event pairs, 848 based on Foata normal form. 5/4980 useless extension candidates. Maximal degree in co-relation 34115. Up to 4907 conditions per place. [2024-06-28 03:26:45,312 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 213 selfloop transitions, 31 changer transitions 0/247 dead transitions. [2024-06-28 03:26:45,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 247 transitions, 3337 flow [2024-06-28 03:26:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:26:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:26:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 03:26:45,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:26:45,313 INFO L175 Difference]: Start difference. First operand has 156 places, 224 transitions, 2618 flow. Second operand 7 states and 112 transitions. [2024-06-28 03:26:45,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 247 transitions, 3337 flow [2024-06-28 03:26:45,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 247 transitions, 3278 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 03:26:45,518 INFO L231 Difference]: Finished difference. Result has 160 places, 230 transitions, 2729 flow [2024-06-28 03:26:45,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2729, PETRI_PLACES=160, PETRI_TRANSITIONS=230} [2024-06-28 03:26:45,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-28 03:26:45,519 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 230 transitions, 2729 flow [2024-06-28 03:26:45,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:45,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:45,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:45,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:26:45,519 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:45,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash -863572476, now seen corresponding path program 2 times [2024-06-28 03:26:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:45,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288530083] [2024-06-28 03:26:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:46,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288530083] [2024-06-28 03:26:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288530083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:46,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:46,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899873951] [2024-06-28 03:26:46,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:46,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:46,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:46,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:46,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 230 transitions, 2729 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:46,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:46,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:46,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:47,021 INFO L124 PetriNetUnfolderBase]: 3170/4864 cut-off events. [2024-06-28 03:26:47,021 INFO L125 PetriNetUnfolderBase]: For 212657/212657 co-relation queries the response was YES. [2024-06-28 03:26:47,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34231 conditions, 4864 events. 3170/4864 cut-off events. For 212657/212657 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 25406 event pairs, 782 based on Foata normal form. 2/4863 useless extension candidates. Maximal degree in co-relation 34159. Up to 4577 conditions per place. [2024-06-28 03:26:47,062 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 194 selfloop transitions, 50 changer transitions 0/251 dead transitions. [2024-06-28 03:26:47,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 251 transitions, 3393 flow [2024-06-28 03:26:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:26:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:26:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:26:47,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-28 03:26:47,064 INFO L175 Difference]: Start difference. First operand has 160 places, 230 transitions, 2729 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:26:47,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 251 transitions, 3393 flow [2024-06-28 03:26:47,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 251 transitions, 3330 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:26:47,293 INFO L231 Difference]: Finished difference. Result has 164 places, 233 transitions, 2806 flow [2024-06-28 03:26:47,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2806, PETRI_PLACES=164, PETRI_TRANSITIONS=233} [2024-06-28 03:26:47,294 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-28 03:26:47,294 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 233 transitions, 2806 flow [2024-06-28 03:26:47,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:47,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:47,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:26:47,294 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:47,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1526393478, now seen corresponding path program 2 times [2024-06-28 03:26:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878140207] [2024-06-28 03:26:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:48,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:48,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878140207] [2024-06-28 03:26:48,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878140207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:48,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:48,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:48,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13827673] [2024-06-28 03:26:48,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:48,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:48,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:48,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:48,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:48,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 233 transitions, 2806 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:48,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:48,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:48,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:49,298 INFO L124 PetriNetUnfolderBase]: 3403/5252 cut-off events. [2024-06-28 03:26:49,298 INFO L125 PetriNetUnfolderBase]: For 242811/242817 co-relation queries the response was YES. [2024-06-28 03:26:49,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36993 conditions, 5252 events. 3403/5252 cut-off events. For 242811/242817 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28201 event pairs, 785 based on Foata normal form. 20/5255 useless extension candidates. Maximal degree in co-relation 36919. Up to 3924 conditions per place. [2024-06-28 03:26:49,346 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 163 selfloop transitions, 111 changer transitions 0/281 dead transitions. [2024-06-28 03:26:49,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 281 transitions, 3786 flow [2024-06-28 03:26:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:26:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:26:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 03:26:49,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:26:49,348 INFO L175 Difference]: Start difference. First operand has 164 places, 233 transitions, 2806 flow. Second operand 10 states and 183 transitions. [2024-06-28 03:26:49,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 281 transitions, 3786 flow [2024-06-28 03:26:49,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 281 transitions, 3704 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:49,653 INFO L231 Difference]: Finished difference. Result has 171 places, 239 transitions, 3088 flow [2024-06-28 03:26:49,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3088, PETRI_PLACES=171, PETRI_TRANSITIONS=239} [2024-06-28 03:26:49,654 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-28 03:26:49,654 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 239 transitions, 3088 flow [2024-06-28 03:26:49,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:49,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:49,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:49,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:26:49,655 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:49,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash -654448668, now seen corresponding path program 3 times [2024-06-28 03:26:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:49,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233506409] [2024-06-28 03:26:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:50,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233506409] [2024-06-28 03:26:50,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233506409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:50,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:50,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:50,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846344117] [2024-06-28 03:26:50,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:50,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:50,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:50,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:50,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:50,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 239 transitions, 3088 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:50,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:50,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:50,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:51,656 INFO L124 PetriNetUnfolderBase]: 3539/5480 cut-off events. [2024-06-28 03:26:51,656 INFO L125 PetriNetUnfolderBase]: For 269823/269829 co-relation queries the response was YES. [2024-06-28 03:26:51,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39601 conditions, 5480 events. 3539/5480 cut-off events. For 269823/269829 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 29879 event pairs, 719 based on Foata normal form. 20/5483 useless extension candidates. Maximal degree in co-relation 39525. Up to 3029 conditions per place. [2024-06-28 03:26:51,697 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 160 selfloop transitions, 120 changer transitions 0/287 dead transitions. [2024-06-28 03:26:51,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 287 transitions, 4078 flow [2024-06-28 03:26:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:26:51,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 03:26:51,699 INFO L175 Difference]: Start difference. First operand has 171 places, 239 transitions, 3088 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:26:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 287 transitions, 4078 flow [2024-06-28 03:26:52,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 287 transitions, 3941 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:52,054 INFO L231 Difference]: Finished difference. Result has 177 places, 242 transitions, 3346 flow [2024-06-28 03:26:52,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3346, PETRI_PLACES=177, PETRI_TRANSITIONS=242} [2024-06-28 03:26:52,055 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 134 predicate places. [2024-06-28 03:26:52,055 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 242 transitions, 3346 flow [2024-06-28 03:26:52,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:52,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:52,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:52,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:26:52,056 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:52,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1500075386, now seen corresponding path program 4 times [2024-06-28 03:26:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:52,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102967195] [2024-06-28 03:26:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102967195] [2024-06-28 03:26:52,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102967195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:52,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:52,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491565156] [2024-06-28 03:26:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:52,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:53,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:53,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 242 transitions, 3346 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:53,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:53,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:53,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:54,025 INFO L124 PetriNetUnfolderBase]: 3547/5500 cut-off events. [2024-06-28 03:26:54,025 INFO L125 PetriNetUnfolderBase]: For 277917/277923 co-relation queries the response was YES. [2024-06-28 03:26:54,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40496 conditions, 5500 events. 3547/5500 cut-off events. For 277917/277923 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 30197 event pairs, 802 based on Foata normal form. 20/5503 useless extension candidates. Maximal degree in co-relation 40417. Up to 4144 conditions per place. [2024-06-28 03:26:54,154 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 169 selfloop transitions, 111 changer transitions 0/287 dead transitions. [2024-06-28 03:26:54,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 287 transitions, 4286 flow [2024-06-28 03:26:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:26:54,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-28 03:26:54,156 INFO L175 Difference]: Start difference. First operand has 177 places, 242 transitions, 3346 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:26:54,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 287 transitions, 4286 flow [2024-06-28 03:26:54,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 287 transitions, 4169 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:54,463 INFO L231 Difference]: Finished difference. Result has 182 places, 243 transitions, 3507 flow [2024-06-28 03:26:54,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3507, PETRI_PLACES=182, PETRI_TRANSITIONS=243} [2024-06-28 03:26:54,465 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-06-28 03:26:54,465 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 243 transitions, 3507 flow [2024-06-28 03:26:54,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:54,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:54,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:26:54,466 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:54,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -509309436, now seen corresponding path program 3 times [2024-06-28 03:26:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540959103] [2024-06-28 03:26:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:55,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:55,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540959103] [2024-06-28 03:26:55,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540959103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:55,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:55,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:55,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824969053] [2024-06-28 03:26:55,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:55,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:55,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:55,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:26:55,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 243 transitions, 3507 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:55,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:55,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:26:55,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:56,148 INFO L124 PetriNetUnfolderBase]: 3541/5492 cut-off events. [2024-06-28 03:26:56,148 INFO L125 PetriNetUnfolderBase]: For 278003/278009 co-relation queries the response was YES. [2024-06-28 03:26:56,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40891 conditions, 5492 events. 3541/5492 cut-off events. For 278003/278009 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 30112 event pairs, 920 based on Foata normal form. 6/5481 useless extension candidates. Maximal degree in co-relation 40810. Up to 5205 conditions per place. [2024-06-28 03:26:56,198 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 198 selfloop transitions, 49 changer transitions 0/254 dead transitions. [2024-06-28 03:26:56,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 254 transitions, 4043 flow [2024-06-28 03:26:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:26:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:26:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 03:26:56,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2024-06-28 03:26:56,199 INFO L175 Difference]: Start difference. First operand has 182 places, 243 transitions, 3507 flow. Second operand 7 states and 114 transitions. [2024-06-28 03:26:56,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 254 transitions, 4043 flow [2024-06-28 03:26:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 254 transitions, 3537 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-28 03:26:56,570 INFO L231 Difference]: Finished difference. Result has 178 places, 243 transitions, 3105 flow [2024-06-28 03:26:56,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3105, PETRI_PLACES=178, PETRI_TRANSITIONS=243} [2024-06-28 03:26:56,571 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-28 03:26:56,571 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 243 transitions, 3105 flow [2024-06-28 03:26:56,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:56,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:56,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:56,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:26:56,572 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:56,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:56,572 INFO L85 PathProgramCache]: Analyzing trace with hash -853395114, now seen corresponding path program 2 times [2024-06-28 03:26:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:56,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674385286] [2024-06-28 03:26:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:56,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674385286] [2024-06-28 03:26:57,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674385286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:57,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:57,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275878295] [2024-06-28 03:26:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:57,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:57,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:26:57,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 243 transitions, 3105 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:57,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:57,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:26:57,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:58,166 INFO L124 PetriNetUnfolderBase]: 3673/5623 cut-off events. [2024-06-28 03:26:58,166 INFO L125 PetriNetUnfolderBase]: For 277460/277472 co-relation queries the response was YES. [2024-06-28 03:26:58,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40074 conditions, 5623 events. 3673/5623 cut-off events. For 277460/277472 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 30289 event pairs, 975 based on Foata normal form. 9/5625 useless extension candidates. Maximal degree in co-relation 39995. Up to 5552 conditions per place. [2024-06-28 03:26:58,216 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 222 selfloop transitions, 33 changer transitions 0/258 dead transitions. [2024-06-28 03:26:58,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 258 transitions, 3794 flow [2024-06-28 03:26:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:26:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:26:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-28 03:26:58,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36054421768707484 [2024-06-28 03:26:58,218 INFO L175 Difference]: Start difference. First operand has 178 places, 243 transitions, 3105 flow. Second operand 7 states and 106 transitions. [2024-06-28 03:26:58,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 258 transitions, 3794 flow [2024-06-28 03:26:58,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 258 transitions, 3624 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:26:58,745 INFO L231 Difference]: Finished difference. Result has 178 places, 246 transitions, 3057 flow [2024-06-28 03:26:58,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3057, PETRI_PLACES=178, PETRI_TRANSITIONS=246} [2024-06-28 03:26:58,746 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-28 03:26:58,746 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 246 transitions, 3057 flow [2024-06-28 03:26:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:58,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:58,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:58,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:26:58,746 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:58,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1207071768, now seen corresponding path program 3 times [2024-06-28 03:26:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929474832] [2024-06-28 03:26:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:58,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:59,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929474832] [2024-06-28 03:26:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929474832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:59,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:59,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:26:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944537782] [2024-06-28 03:26:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:59,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:26:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:26:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:26:59,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:26:59,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 246 transitions, 3057 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:59,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:59,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:26:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:00,425 INFO L124 PetriNetUnfolderBase]: 3670/5619 cut-off events. [2024-06-28 03:27:00,426 INFO L125 PetriNetUnfolderBase]: For 286129/286141 co-relation queries the response was YES. [2024-06-28 03:27:00,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40176 conditions, 5619 events. 3670/5619 cut-off events. For 286129/286141 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 30225 event pairs, 975 based on Foata normal form. 9/5621 useless extension candidates. Maximal degree in co-relation 40096. Up to 5549 conditions per place. [2024-06-28 03:27:00,477 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 220 selfloop transitions, 34 changer transitions 0/257 dead transitions. [2024-06-28 03:27:00,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 257 transitions, 3610 flow [2024-06-28 03:27:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 03:27:00,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35374149659863946 [2024-06-28 03:27:00,478 INFO L175 Difference]: Start difference. First operand has 178 places, 246 transitions, 3057 flow. Second operand 7 states and 104 transitions. [2024-06-28 03:27:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 257 transitions, 3610 flow [2024-06-28 03:27:00,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 257 transitions, 3464 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:00,909 INFO L231 Difference]: Finished difference. Result has 180 places, 246 transitions, 2985 flow [2024-06-28 03:27:00,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2985, PETRI_PLACES=180, PETRI_TRANSITIONS=246} [2024-06-28 03:27:00,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-28 03:27:00,909 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 246 transitions, 2985 flow [2024-06-28 03:27:00,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:00,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:00,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:00,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:27:00,910 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:00,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1886067622, now seen corresponding path program 1 times [2024-06-28 03:27:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:00,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700370501] [2024-06-28 03:27:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:00,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:01,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:01,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700370501] [2024-06-28 03:27:01,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700370501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:01,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:01,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:01,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246427566] [2024-06-28 03:27:01,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:01,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:01,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:01,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:01,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:01,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:27:01,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 246 transitions, 2985 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:01,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:01,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:27:01,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:02,562 INFO L124 PetriNetUnfolderBase]: 3299/5223 cut-off events. [2024-06-28 03:27:02,562 INFO L125 PetriNetUnfolderBase]: For 261564/261564 co-relation queries the response was YES. [2024-06-28 03:27:02,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36780 conditions, 5223 events. 3299/5223 cut-off events. For 261564/261564 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 29405 event pairs, 877 based on Foata normal form. 1/5221 useless extension candidates. Maximal degree in co-relation 36699. Up to 4989 conditions per place. [2024-06-28 03:27:02,609 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 240 selfloop transitions, 15 changer transitions 0/264 dead transitions. [2024-06-28 03:27:02,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 264 transitions, 3597 flow [2024-06-28 03:27:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:27:02,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:27:02,611 INFO L175 Difference]: Start difference. First operand has 180 places, 246 transitions, 2985 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:27:02,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 264 transitions, 3597 flow [2024-06-28 03:27:02,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 264 transitions, 3519 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:02,964 INFO L231 Difference]: Finished difference. Result has 181 places, 249 transitions, 3001 flow [2024-06-28 03:27:02,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3001, PETRI_PLACES=181, PETRI_TRANSITIONS=249} [2024-06-28 03:27:02,965 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2024-06-28 03:27:02,965 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 249 transitions, 3001 flow [2024-06-28 03:27:02,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:02,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:02,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:02,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:27:02,966 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:02,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:02,966 INFO L85 PathProgramCache]: Analyzing trace with hash -686256258, now seen corresponding path program 2 times [2024-06-28 03:27:02,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:02,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473337877] [2024-06-28 03:27:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:02,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:03,681 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 03:27:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:03,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473337877] [2024-06-28 03:27:03,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473337877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:03,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017087583] [2024-06-28 03:27:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:03,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:03,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:03,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:03,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:27:03,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 249 transitions, 3001 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:03,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:03,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:27:03,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:04,566 INFO L124 PetriNetUnfolderBase]: 3304/5230 cut-off events. [2024-06-28 03:27:04,567 INFO L125 PetriNetUnfolderBase]: For 271768/271768 co-relation queries the response was YES. [2024-06-28 03:27:04,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37320 conditions, 5230 events. 3304/5230 cut-off events. For 271768/271768 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29477 event pairs, 878 based on Foata normal form. 1/5228 useless extension candidates. Maximal degree in co-relation 37238. Up to 4980 conditions per place. [2024-06-28 03:27:04,607 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 232 selfloop transitions, 27 changer transitions 0/268 dead transitions. [2024-06-28 03:27:04,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 268 transitions, 3763 flow [2024-06-28 03:27:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:27:04,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-28 03:27:04,608 INFO L175 Difference]: Start difference. First operand has 181 places, 249 transitions, 3001 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:27:04,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 268 transitions, 3763 flow [2024-06-28 03:27:05,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 268 transitions, 3691 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:05,067 INFO L231 Difference]: Finished difference. Result has 183 places, 255 transitions, 3111 flow [2024-06-28 03:27:05,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3111, PETRI_PLACES=183, PETRI_TRANSITIONS=255} [2024-06-28 03:27:05,067 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-06-28 03:27:05,067 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 255 transitions, 3111 flow [2024-06-28 03:27:05,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:05,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:05,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:27:05,068 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:05,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1885947466, now seen corresponding path program 1 times [2024-06-28 03:27:05,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519360679] [2024-06-28 03:27:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519360679] [2024-06-28 03:27:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519360679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:05,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:05,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:27:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143247370] [2024-06-28 03:27:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:05,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:27:05,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:27:05,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:27:05,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:05,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 255 transitions, 3111 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:05,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:05,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:05,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:06,515 INFO L124 PetriNetUnfolderBase]: 3436/5364 cut-off events. [2024-06-28 03:27:06,515 INFO L125 PetriNetUnfolderBase]: For 283265/283265 co-relation queries the response was YES. [2024-06-28 03:27:06,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38509 conditions, 5364 events. 3436/5364 cut-off events. For 283265/283265 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 29648 event pairs, 917 based on Foata normal form. 1/5362 useless extension candidates. Maximal degree in co-relation 38426. Up to 5231 conditions per place. [2024-06-28 03:27:06,564 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 246 selfloop transitions, 24 changer transitions 0/274 dead transitions. [2024-06-28 03:27:06,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 274 transitions, 3849 flow [2024-06-28 03:27:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 03:27:06,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 03:27:06,565 INFO L175 Difference]: Start difference. First operand has 183 places, 255 transitions, 3111 flow. Second operand 7 states and 115 transitions. [2024-06-28 03:27:06,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 274 transitions, 3849 flow [2024-06-28 03:27:06,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 274 transitions, 3776 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:27:07,050 INFO L231 Difference]: Finished difference. Result has 187 places, 261 transitions, 3166 flow [2024-06-28 03:27:07,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3166, PETRI_PLACES=187, PETRI_TRANSITIONS=261} [2024-06-28 03:27:07,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-28 03:27:07,050 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 261 transitions, 3166 flow [2024-06-28 03:27:07,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:07,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:07,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:07,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:27:07,051 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:07,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1705779060, now seen corresponding path program 2 times [2024-06-28 03:27:07,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:07,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145687087] [2024-06-28 03:27:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:07,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:07,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:07,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145687087] [2024-06-28 03:27:07,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145687087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:07,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686334956] [2024-06-28 03:27:07,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:07,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:07,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:07,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 261 transitions, 3166 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:07,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:07,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:07,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:08,671 INFO L124 PetriNetUnfolderBase]: 3441/5371 cut-off events. [2024-06-28 03:27:08,671 INFO L125 PetriNetUnfolderBase]: For 294630/294630 co-relation queries the response was YES. [2024-06-28 03:27:08,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39122 conditions, 5371 events. 3441/5371 cut-off events. For 294630/294630 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29690 event pairs, 915 based on Foata normal form. 1/5369 useless extension candidates. Maximal degree in co-relation 39037. Up to 5259 conditions per place. [2024-06-28 03:27:08,726 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 254 selfloop transitions, 15 changer transitions 0/273 dead transitions. [2024-06-28 03:27:08,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 273 transitions, 3770 flow [2024-06-28 03:27:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-28 03:27:08,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394557823129253 [2024-06-28 03:27:08,727 INFO L175 Difference]: Start difference. First operand has 187 places, 261 transitions, 3166 flow. Second operand 7 states and 107 transitions. [2024-06-28 03:27:08,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 273 transitions, 3770 flow [2024-06-28 03:27:09,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 273 transitions, 3723 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 03:27:09,291 INFO L231 Difference]: Finished difference. Result has 191 places, 264 transitions, 3201 flow [2024-06-28 03:27:09,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3201, PETRI_PLACES=191, PETRI_TRANSITIONS=264} [2024-06-28 03:27:09,292 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-28 03:27:09,292 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 264 transitions, 3201 flow [2024-06-28 03:27:09,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:09,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:09,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:09,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:27:09,293 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:09,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1410310312, now seen corresponding path program 3 times [2024-06-28 03:27:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:09,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223753823] [2024-06-28 03:27:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:09,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223753823] [2024-06-28 03:27:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223753823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:09,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:09,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925214518] [2024-06-28 03:27:09,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:09,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:09,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:09,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:27:09,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 264 transitions, 3201 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:09,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:09,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:27:09,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:10,804 INFO L124 PetriNetUnfolderBase]: 3323/5252 cut-off events. [2024-06-28 03:27:10,804 INFO L125 PetriNetUnfolderBase]: For 304833/304833 co-relation queries the response was YES. [2024-06-28 03:27:10,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38674 conditions, 5252 events. 3323/5252 cut-off events. For 304833/304833 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29540 event pairs, 880 based on Foata normal form. 1/5250 useless extension candidates. Maximal degree in co-relation 38587. Up to 5026 conditions per place. [2024-06-28 03:27:10,856 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 246 selfloop transitions, 15 changer transitions 0/273 dead transitions. [2024-06-28 03:27:10,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 273 transitions, 3749 flow [2024-06-28 03:27:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:27:10,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2024-06-28 03:27:10,857 INFO L175 Difference]: Start difference. First operand has 191 places, 264 transitions, 3201 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:27:10,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 273 transitions, 3749 flow [2024-06-28 03:27:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 273 transitions, 3657 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:11,484 INFO L231 Difference]: Finished difference. Result has 193 places, 264 transitions, 3145 flow [2024-06-28 03:27:11,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3145, PETRI_PLACES=193, PETRI_TRANSITIONS=264} [2024-06-28 03:27:11,485 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-06-28 03:27:11,485 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 264 transitions, 3145 flow [2024-06-28 03:27:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:11,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:11,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:11,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:27:11,486 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:11,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash -509124552, now seen corresponding path program 3 times [2024-06-28 03:27:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:11,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853307494] [2024-06-28 03:27:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:11,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:12,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853307494] [2024-06-28 03:27:12,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853307494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:12,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:12,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:12,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259790328] [2024-06-28 03:27:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:12,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:12,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 264 transitions, 3145 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:12,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:12,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:12,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:13,043 INFO L124 PetriNetUnfolderBase]: 3435/5363 cut-off events. [2024-06-28 03:27:13,043 INFO L125 PetriNetUnfolderBase]: For 313427/313427 co-relation queries the response was YES. [2024-06-28 03:27:13,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39384 conditions, 5363 events. 3435/5363 cut-off events. For 313427/313427 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29616 event pairs, 915 based on Foata normal form. 1/5361 useless extension candidates. Maximal degree in co-relation 39296. Up to 5245 conditions per place. [2024-06-28 03:27:13,085 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 249 selfloop transitions, 20 changer transitions 0/273 dead transitions. [2024-06-28 03:27:13,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 273 transitions, 3709 flow [2024-06-28 03:27:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 03:27:13,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-28 03:27:13,087 INFO L175 Difference]: Start difference. First operand has 193 places, 264 transitions, 3145 flow. Second operand 7 states and 109 transitions. [2024-06-28 03:27:13,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 273 transitions, 3709 flow [2024-06-28 03:27:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 273 transitions, 3647 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:13,611 INFO L231 Difference]: Finished difference. Result has 194 places, 264 transitions, 3129 flow [2024-06-28 03:27:13,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3129, PETRI_PLACES=194, PETRI_TRANSITIONS=264} [2024-06-28 03:27:13,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-06-28 03:27:13,611 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 264 transitions, 3129 flow [2024-06-28 03:27:13,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:13,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:13,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:13,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:27:13,617 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:13,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash -86360761, now seen corresponding path program 1 times [2024-06-28 03:27:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:13,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246532643] [2024-06-28 03:27:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:13,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:14,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:14,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246532643] [2024-06-28 03:27:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246532643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:14,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:14,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:27:14,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95746485] [2024-06-28 03:27:14,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:14,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:27:14,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:27:14,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:27:14,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:14,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 264 transitions, 3129 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:14,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:14,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:14,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:15,766 INFO L124 PetriNetUnfolderBase]: 3617/5602 cut-off events. [2024-06-28 03:27:15,766 INFO L125 PetriNetUnfolderBase]: For 384200/384200 co-relation queries the response was YES. [2024-06-28 03:27:15,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42778 conditions, 5602 events. 3617/5602 cut-off events. For 384200/384200 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30559 event pairs, 700 based on Foata normal form. 12/5611 useless extension candidates. Maximal degree in co-relation 42689. Up to 5207 conditions per place. [2024-06-28 03:27:15,823 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 249 selfloop transitions, 41 changer transitions 0/301 dead transitions. [2024-06-28 03:27:15,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 301 transitions, 3877 flow [2024-06-28 03:27:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:27:15,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:27:15,825 INFO L175 Difference]: Start difference. First operand has 194 places, 264 transitions, 3129 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:27:15,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 301 transitions, 3877 flow [2024-06-28 03:27:16,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 301 transitions, 3811 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:16,671 INFO L231 Difference]: Finished difference. Result has 198 places, 267 transitions, 3214 flow [2024-06-28 03:27:16,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3214, PETRI_PLACES=198, PETRI_TRANSITIONS=267} [2024-06-28 03:27:16,671 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2024-06-28 03:27:16,671 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 267 transitions, 3214 flow [2024-06-28 03:27:16,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:16,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:16,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:27:16,672 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:16,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash -28152991, now seen corresponding path program 2 times [2024-06-28 03:27:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444346809] [2024-06-28 03:27:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:17,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444346809] [2024-06-28 03:27:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444346809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:17,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:27:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683855321] [2024-06-28 03:27:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:27:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:27:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:27:17,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:17,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 267 transitions, 3214 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:17,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:17,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:17,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:18,812 INFO L124 PetriNetUnfolderBase]: 3597/5570 cut-off events. [2024-06-28 03:27:18,812 INFO L125 PetriNetUnfolderBase]: For 387477/387477 co-relation queries the response was YES. [2024-06-28 03:27:18,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42660 conditions, 5570 events. 3597/5570 cut-off events. For 387477/387477 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30526 event pairs, 818 based on Foata normal form. 12/5579 useless extension candidates. Maximal degree in co-relation 42569. Up to 4900 conditions per place. [2024-06-28 03:27:18,871 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 211 selfloop transitions, 83 changer transitions 0/305 dead transitions. [2024-06-28 03:27:18,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 305 transitions, 3959 flow [2024-06-28 03:27:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:27:18,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 03:27:18,881 INFO L175 Difference]: Start difference. First operand has 198 places, 267 transitions, 3214 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:27:18,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 305 transitions, 3959 flow [2024-06-28 03:27:19,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 305 transitions, 3811 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:19,451 INFO L231 Difference]: Finished difference. Result has 202 places, 270 transitions, 3283 flow [2024-06-28 03:27:19,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3283, PETRI_PLACES=202, PETRI_TRANSITIONS=270} [2024-06-28 03:27:19,452 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-28 03:27:19,452 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 270 transitions, 3283 flow [2024-06-28 03:27:19,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:19,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:19,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:19,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:27:19,453 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:19,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:19,453 INFO L85 PathProgramCache]: Analyzing trace with hash -28268311, now seen corresponding path program 3 times [2024-06-28 03:27:19,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:19,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862578025] [2024-06-28 03:27:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:20,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:20,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862578025] [2024-06-28 03:27:20,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862578025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:20,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:20,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:27:20,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137308881] [2024-06-28 03:27:20,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:20,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:27:20,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:20,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:27:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:27:20,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:20,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 270 transitions, 3283 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:20,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:20,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:20,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:21,749 INFO L124 PetriNetUnfolderBase]: 3638/5641 cut-off events. [2024-06-28 03:27:21,749 INFO L125 PetriNetUnfolderBase]: For 405272/405272 co-relation queries the response was YES. [2024-06-28 03:27:21,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43328 conditions, 5641 events. 3638/5641 cut-off events. For 405272/405272 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31050 event pairs, 852 based on Foata normal form. 12/5650 useless extension candidates. Maximal degree in co-relation 43235. Up to 4865 conditions per place. [2024-06-28 03:27:21,808 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 208 selfloop transitions, 89 changer transitions 0/308 dead transitions. [2024-06-28 03:27:21,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 308 transitions, 4071 flow [2024-06-28 03:27:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:27:21,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 03:27:21,810 INFO L175 Difference]: Start difference. First operand has 202 places, 270 transitions, 3283 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:27:21,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 308 transitions, 4071 flow [2024-06-28 03:27:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 308 transitions, 3900 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:22,403 INFO L231 Difference]: Finished difference. Result has 206 places, 274 transitions, 3400 flow [2024-06-28 03:27:22,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3400, PETRI_PLACES=206, PETRI_TRANSITIONS=274} [2024-06-28 03:27:22,404 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-28 03:27:22,404 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 274 transitions, 3400 flow [2024-06-28 03:27:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:22,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:22,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:22,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:27:22,404 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:22,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:22,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1006651869, now seen corresponding path program 1 times [2024-06-28 03:27:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818172181] [2024-06-28 03:27:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:22,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:23,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818172181] [2024-06-28 03:27:23,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818172181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:23,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:23,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480420854] [2024-06-28 03:27:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:23,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:23,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:23,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:23,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 274 transitions, 3400 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:23,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:23,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:23,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:24,015 INFO L124 PetriNetUnfolderBase]: 3651/5659 cut-off events. [2024-06-28 03:27:24,015 INFO L125 PetriNetUnfolderBase]: For 412552/412556 co-relation queries the response was YES. [2024-06-28 03:27:24,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43981 conditions, 5659 events. 3651/5659 cut-off events. For 412552/412556 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31168 event pairs, 898 based on Foata normal form. 5/5661 useless extension candidates. Maximal degree in co-relation 43886. Up to 5462 conditions per place. [2024-06-28 03:27:24,075 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 261 selfloop transitions, 30 changer transitions 0/302 dead transitions. [2024-06-28 03:27:24,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 302 transitions, 4280 flow [2024-06-28 03:27:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:27:24,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 03:27:24,076 INFO L175 Difference]: Start difference. First operand has 206 places, 274 transitions, 3400 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:27:24,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 302 transitions, 4280 flow [2024-06-28 03:27:24,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 302 transitions, 4059 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:24,796 INFO L231 Difference]: Finished difference. Result has 209 places, 282 transitions, 3383 flow [2024-06-28 03:27:24,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3383, PETRI_PLACES=209, PETRI_TRANSITIONS=282} [2024-06-28 03:27:24,797 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-28 03:27:24,797 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 282 transitions, 3383 flow [2024-06-28 03:27:24,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:24,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:24,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:24,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:27:24,798 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:24,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -9694105, now seen corresponding path program 2 times [2024-06-28 03:27:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505037503] [2024-06-28 03:27:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:24,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:25,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505037503] [2024-06-28 03:27:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505037503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:25,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:25,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:27:25,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713250235] [2024-06-28 03:27:25,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:25,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:27:25,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:25,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:27:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:27:25,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:25,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 282 transitions, 3383 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:25,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:25,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:25,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:26,411 INFO L124 PetriNetUnfolderBase]: 3656/5666 cut-off events. [2024-06-28 03:27:26,412 INFO L125 PetriNetUnfolderBase]: For 424018/424022 co-relation queries the response was YES. [2024-06-28 03:27:26,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44153 conditions, 5666 events. 3656/5666 cut-off events. For 424018/424022 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31181 event pairs, 903 based on Foata normal form. 5/5668 useless extension candidates. Maximal degree in co-relation 44056. Up to 5492 conditions per place. [2024-06-28 03:27:26,466 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 263 selfloop transitions, 27 changer transitions 0/301 dead transitions. [2024-06-28 03:27:26,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 301 transitions, 4087 flow [2024-06-28 03:27:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:26,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 03:27:26,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 03:27:26,468 INFO L175 Difference]: Start difference. First operand has 209 places, 282 transitions, 3383 flow. Second operand 7 states and 115 transitions. [2024-06-28 03:27:26,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 301 transitions, 4087 flow [2024-06-28 03:27:27,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 301 transitions, 3972 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 03:27:27,139 INFO L231 Difference]: Finished difference. Result has 213 places, 285 transitions, 3395 flow [2024-06-28 03:27:27,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3395, PETRI_PLACES=213, PETRI_TRANSITIONS=285} [2024-06-28 03:27:27,139 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 170 predicate places. [2024-06-28 03:27:27,139 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 285 transitions, 3395 flow [2024-06-28 03:27:27,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:27,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:27,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:27,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:27:27,140 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:27,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1156393866, now seen corresponding path program 1 times [2024-06-28 03:27:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:27,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879289515] [2024-06-28 03:27:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879289515] [2024-06-28 03:27:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879289515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060348803] [2024-06-28 03:27:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:27,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:27,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:27,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:27:27,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 285 transitions, 3395 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:27,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:27,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:27:27,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:29,255 INFO L124 PetriNetUnfolderBase]: 3774/5790 cut-off events. [2024-06-28 03:27:29,255 INFO L125 PetriNetUnfolderBase]: For 438459/438463 co-relation queries the response was YES. [2024-06-28 03:27:29,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45080 conditions, 5790 events. 3774/5790 cut-off events. For 438459/438463 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31386 event pairs, 925 based on Foata normal form. 6/5793 useless extension candidates. Maximal degree in co-relation 44981. Up to 5572 conditions per place. [2024-06-28 03:27:29,305 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 249 selfloop transitions, 65 changer transitions 0/317 dead transitions. [2024-06-28 03:27:29,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 317 transitions, 4320 flow [2024-06-28 03:27:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:27:29,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 03:27:29,307 INFO L175 Difference]: Start difference. First operand has 213 places, 285 transitions, 3395 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:27:29,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 317 transitions, 4320 flow [2024-06-28 03:27:29,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 317 transitions, 4246 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:29,796 INFO L231 Difference]: Finished difference. Result has 216 places, 291 transitions, 3543 flow [2024-06-28 03:27:29,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3543, PETRI_PLACES=216, PETRI_TRANSITIONS=291} [2024-06-28 03:27:29,797 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 173 predicate places. [2024-06-28 03:27:29,797 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 291 transitions, 3543 flow [2024-06-28 03:27:29,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:29,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:29,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:27:29,797 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:29,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:29,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1837898428, now seen corresponding path program 2 times [2024-06-28 03:27:29,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:29,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530976664] [2024-06-28 03:27:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:29,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:30,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530976664] [2024-06-28 03:27:30,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530976664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:30,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:30,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:30,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073906468] [2024-06-28 03:27:30,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:30,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:30,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:30,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:27:30,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 291 transitions, 3543 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:30,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:30,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:27:30,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:31,796 INFO L124 PetriNetUnfolderBase]: 3800/5824 cut-off events. [2024-06-28 03:27:31,797 INFO L125 PetriNetUnfolderBase]: For 458246/458246 co-relation queries the response was YES. [2024-06-28 03:27:31,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46229 conditions, 5824 events. 3800/5824 cut-off events. For 458246/458246 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31553 event pairs, 908 based on Foata normal form. 2/5823 useless extension candidates. Maximal degree in co-relation 46129. Up to 5597 conditions per place. [2024-06-28 03:27:31,863 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 248 selfloop transitions, 67 changer transitions 0/318 dead transitions. [2024-06-28 03:27:31,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 318 transitions, 4567 flow [2024-06-28 03:27:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:27:31,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:27:31,873 INFO L175 Difference]: Start difference. First operand has 216 places, 291 transitions, 3543 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:27:31,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 318 transitions, 4567 flow [2024-06-28 03:27:32,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 318 transitions, 4462 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:32,678 INFO L231 Difference]: Finished difference. Result has 220 places, 297 transitions, 3670 flow [2024-06-28 03:27:32,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3670, PETRI_PLACES=220, PETRI_TRANSITIONS=297} [2024-06-28 03:27:32,679 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-28 03:27:32,680 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 297 transitions, 3670 flow [2024-06-28 03:27:32,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:32,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:32,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:32,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:27:32,681 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:32,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1837909991, now seen corresponding path program 1 times [2024-06-28 03:27:32,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:32,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502099160] [2024-06-28 03:27:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:33,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:33,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502099160] [2024-06-28 03:27:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502099160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628269460] [2024-06-28 03:27:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:33,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:33,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:33,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:33,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:27:33,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 297 transitions, 3670 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:33,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:33,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:27:33,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:34,753 INFO L124 PetriNetUnfolderBase]: 3805/5831 cut-off events. [2024-06-28 03:27:34,753 INFO L125 PetriNetUnfolderBase]: For 471848/471852 co-relation queries the response was YES. [2024-06-28 03:27:34,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46616 conditions, 5831 events. 3805/5831 cut-off events. For 471848/471852 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31600 event pairs, 934 based on Foata normal form. 5/5833 useless extension candidates. Maximal degree in co-relation 46514. Up to 5747 conditions per place. [2024-06-28 03:27:34,815 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 281 selfloop transitions, 40 changer transitions 0/324 dead transitions. [2024-06-28 03:27:34,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 324 transitions, 4609 flow [2024-06-28 03:27:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:27:34,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 03:27:34,816 INFO L175 Difference]: Start difference. First operand has 220 places, 297 transitions, 3670 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:27:34,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 324 transitions, 4609 flow [2024-06-28 03:27:35,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 324 transitions, 4501 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:35,775 INFO L231 Difference]: Finished difference. Result has 225 places, 306 transitions, 3787 flow [2024-06-28 03:27:35,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3787, PETRI_PLACES=225, PETRI_TRANSITIONS=306} [2024-06-28 03:27:35,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-28 03:27:35,776 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 306 transitions, 3787 flow [2024-06-28 03:27:35,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:35,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:35,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:35,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:27:35,776 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:35,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1837909588, now seen corresponding path program 3 times [2024-06-28 03:27:35,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:35,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713566366] [2024-06-28 03:27:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:35,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713566366] [2024-06-28 03:27:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713566366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:36,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:36,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535305903] [2024-06-28 03:27:36,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:36,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:36,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:36,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:27:36,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 306 transitions, 3787 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:36,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:36,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:27:36,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:37,791 INFO L124 PetriNetUnfolderBase]: 3799/5823 cut-off events. [2024-06-28 03:27:37,791 INFO L125 PetriNetUnfolderBase]: For 486952/486952 co-relation queries the response was YES. [2024-06-28 03:27:37,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46939 conditions, 5823 events. 3799/5823 cut-off events. For 486952/486952 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31497 event pairs, 904 based on Foata normal form. 2/5822 useless extension candidates. Maximal degree in co-relation 46835. Up to 5599 conditions per place. [2024-06-28 03:27:37,848 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 255 selfloop transitions, 68 changer transitions 0/326 dead transitions. [2024-06-28 03:27:37,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 326 transitions, 4627 flow [2024-06-28 03:27:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:27:37,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 03:27:37,849 INFO L175 Difference]: Start difference. First operand has 225 places, 306 transitions, 3787 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:27:37,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 326 transitions, 4627 flow [2024-06-28 03:27:38,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 326 transitions, 4543 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 03:27:38,354 INFO L231 Difference]: Finished difference. Result has 230 places, 306 transitions, 3845 flow [2024-06-28 03:27:38,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3703, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3845, PETRI_PLACES=230, PETRI_TRANSITIONS=306} [2024-06-28 03:27:38,355 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-28 03:27:38,355 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 306 transitions, 3845 flow [2024-06-28 03:27:38,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:38,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:38,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:38,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:27:38,356 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:38,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash 189457955, now seen corresponding path program 3 times [2024-06-28 03:27:38,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:38,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081430910] [2024-06-28 03:27:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081430910] [2024-06-28 03:27:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081430910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826231520] [2024-06-28 03:27:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:39,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:39,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:39,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:39,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 306 transitions, 3845 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:39,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:39,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:40,142 INFO L124 PetriNetUnfolderBase]: 3703/5728 cut-off events. [2024-06-28 03:27:40,142 INFO L125 PetriNetUnfolderBase]: For 502435/502447 co-relation queries the response was YES. [2024-06-28 03:27:40,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46834 conditions, 5728 events. 3703/5728 cut-off events. For 502435/502447 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31462 event pairs, 900 based on Foata normal form. 9/5730 useless extension candidates. Maximal degree in co-relation 46727. Up to 5490 conditions per place. [2024-06-28 03:27:40,202 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 272 selfloop transitions, 46 changer transitions 0/333 dead transitions. [2024-06-28 03:27:40,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 333 transitions, 4920 flow [2024-06-28 03:27:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:27:40,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 03:27:40,204 INFO L175 Difference]: Start difference. First operand has 230 places, 306 transitions, 3845 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:27:40,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 333 transitions, 4920 flow [2024-06-28 03:27:40,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 333 transitions, 4776 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:27:40,923 INFO L231 Difference]: Finished difference. Result has 231 places, 314 transitions, 3952 flow [2024-06-28 03:27:40,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3952, PETRI_PLACES=231, PETRI_TRANSITIONS=314} [2024-06-28 03:27:40,924 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-28 03:27:40,924 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 314 transitions, 3952 flow [2024-06-28 03:27:40,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:40,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:40,925 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 03:27:40,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:27:40,925 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:40,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1665158245, now seen corresponding path program 4 times [2024-06-28 03:27:40,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567243478] [2024-06-28 03:27:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:40,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567243478] [2024-06-28 03:27:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567243478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394905857] [2024-06-28 03:27:41,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:41,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:41,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 314 transitions, 3952 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:41,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:41,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:41,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:42,638 INFO L124 PetriNetUnfolderBase]: 3708/5735 cut-off events. [2024-06-28 03:27:42,638 INFO L125 PetriNetUnfolderBase]: For 519934/519946 co-relation queries the response was YES. [2024-06-28 03:27:42,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47472 conditions, 5735 events. 3708/5735 cut-off events. For 519934/519946 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31513 event pairs, 900 based on Foata normal form. 9/5737 useless extension candidates. Maximal degree in co-relation 47363. Up to 5496 conditions per place. [2024-06-28 03:27:42,701 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 268 selfloop transitions, 49 changer transitions 0/332 dead transitions. [2024-06-28 03:27:42,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 332 transitions, 4832 flow [2024-06-28 03:27:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 03:27:42,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945578231292517 [2024-06-28 03:27:42,703 INFO L175 Difference]: Start difference. First operand has 231 places, 314 transitions, 3952 flow. Second operand 7 states and 116 transitions. [2024-06-28 03:27:42,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 332 transitions, 4832 flow [2024-06-28 03:27:43,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 332 transitions, 4673 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 03:27:43,536 INFO L231 Difference]: Finished difference. Result has 235 places, 317 transitions, 3966 flow [2024-06-28 03:27:43,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3966, PETRI_PLACES=235, PETRI_TRANSITIONS=317} [2024-06-28 03:27:43,537 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-28 03:27:43,537 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 317 transitions, 3966 flow [2024-06-28 03:27:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:43,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:43,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:43,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:27:43,538 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:43,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1326465285, now seen corresponding path program 5 times [2024-06-28 03:27:43,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:43,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352594953] [2024-06-28 03:27:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:44,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352594953] [2024-06-28 03:27:44,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352594953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:44,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:44,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:44,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629218491] [2024-06-28 03:27:44,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:44,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:44,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:44,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:44,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 317 transitions, 3966 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:44,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:44,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:44,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:45,310 INFO L124 PetriNetUnfolderBase]: 3705/5731 cut-off events. [2024-06-28 03:27:45,311 INFO L125 PetriNetUnfolderBase]: For 532994/533006 co-relation queries the response was YES. [2024-06-28 03:27:45,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47625 conditions, 5731 events. 3705/5731 cut-off events. For 532994/533006 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31507 event pairs, 897 based on Foata normal form. 9/5733 useless extension candidates. Maximal degree in co-relation 47514. Up to 5550 conditions per place. [2024-06-28 03:27:45,369 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 287 selfloop transitions, 26 changer transitions 0/328 dead transitions. [2024-06-28 03:27:45,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 328 transitions, 4637 flow [2024-06-28 03:27:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 03:27:45,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-28 03:27:45,370 INFO L175 Difference]: Start difference. First operand has 235 places, 317 transitions, 3966 flow. Second operand 7 states and 109 transitions. [2024-06-28 03:27:45,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 328 transitions, 4637 flow [2024-06-28 03:27:46,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 328 transitions, 4527 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:46,227 INFO L231 Difference]: Finished difference. Result has 238 places, 317 transitions, 3914 flow [2024-06-28 03:27:46,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3914, PETRI_PLACES=238, PETRI_TRANSITIONS=317} [2024-06-28 03:27:46,227 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-28 03:27:46,228 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 317 transitions, 3914 flow [2024-06-28 03:27:46,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:46,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:46,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:46,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:27:46,228 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:46,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1391431429, now seen corresponding path program 6 times [2024-06-28 03:27:46,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:46,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675718384] [2024-06-28 03:27:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:46,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:46,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675718384] [2024-06-28 03:27:46,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675718384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:46,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:46,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:46,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634394255] [2024-06-28 03:27:46,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:46,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:46,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:46,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:46,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 317 transitions, 3914 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:46,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:46,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:46,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:47,981 INFO L124 PetriNetUnfolderBase]: 3702/5727 cut-off events. [2024-06-28 03:27:47,981 INFO L125 PetriNetUnfolderBase]: For 546615/546627 co-relation queries the response was YES. [2024-06-28 03:27:48,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47723 conditions, 5727 events. 3702/5727 cut-off events. For 546615/546627 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31494 event pairs, 897 based on Foata normal form. 9/5729 useless extension candidates. Maximal degree in co-relation 47611. Up to 5537 conditions per place. [2024-06-28 03:27:48,071 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 279 selfloop transitions, 34 changer transitions 0/328 dead transitions. [2024-06-28 03:27:48,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 328 transitions, 4585 flow [2024-06-28 03:27:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 03:27:48,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2024-06-28 03:27:48,073 INFO L175 Difference]: Start difference. First operand has 238 places, 317 transitions, 3914 flow. Second operand 7 states and 110 transitions. [2024-06-28 03:27:48,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 328 transitions, 4585 flow [2024-06-28 03:27:49,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 328 transitions, 4507 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:49,277 INFO L231 Difference]: Finished difference. Result has 240 places, 317 transitions, 3910 flow [2024-06-28 03:27:49,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3910, PETRI_PLACES=240, PETRI_TRANSITIONS=317} [2024-06-28 03:27:49,278 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-06-28 03:27:49,278 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 317 transitions, 3910 flow [2024-06-28 03:27:49,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 03:27:49,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:49,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:49,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:27:49,278 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash -250930335, now seen corresponding path program 4 times [2024-06-28 03:27:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:49,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437239717] [2024-06-28 03:27:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:49,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:50,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437239717] [2024-06-28 03:27:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437239717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:50,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:50,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:27:50,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806247936] [2024-06-28 03:27:50,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:50,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:27:50,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:27:50,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:27:50,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:50,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 317 transitions, 3910 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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 03:27:50,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:50,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:50,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:51,911 INFO L124 PetriNetUnfolderBase]: 3684/5701 cut-off events. [2024-06-28 03:27:51,912 INFO L125 PetriNetUnfolderBase]: For 560783/560789 co-relation queries the response was YES. [2024-06-28 03:27:51,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47211 conditions, 5701 events. 3684/5701 cut-off events. For 560783/560789 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 31284 event pairs, 819 based on Foata normal form. 16/5700 useless extension candidates. Maximal degree in co-relation 47098. Up to 4961 conditions per place. [2024-06-28 03:27:51,980 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 240 selfloop transitions, 98 changer transitions 0/353 dead transitions. [2024-06-28 03:27:51,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 353 transitions, 4742 flow [2024-06-28 03:27:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:27:51,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-28 03:27:51,982 INFO L175 Difference]: Start difference. First operand has 240 places, 317 transitions, 3910 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:27:51,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 353 transitions, 4742 flow [2024-06-28 03:27:52,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 353 transitions, 4644 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:52,782 INFO L231 Difference]: Finished difference. Result has 245 places, 319 transitions, 4042 flow [2024-06-28 03:27:52,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4042, PETRI_PLACES=245, PETRI_TRANSITIONS=319} [2024-06-28 03:27:52,782 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 202 predicate places. [2024-06-28 03:27:52,782 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 319 transitions, 4042 flow [2024-06-28 03:27:52,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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 03:27:52,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:52,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:52,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:27:52,783 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:52,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash -251045655, now seen corresponding path program 5 times [2024-06-28 03:27:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:52,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990355502] [2024-06-28 03:27:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:53,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:53,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990355502] [2024-06-28 03:27:53,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990355502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:53,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:53,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:27:53,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721118168] [2024-06-28 03:27:53,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:53,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:27:53,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:27:53,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:27:54,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:54,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 319 transitions, 4042 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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 03:27:54,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:54,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:54,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:55,170 INFO L124 PetriNetUnfolderBase]: 3662/5667 cut-off events. [2024-06-28 03:27:55,170 INFO L125 PetriNetUnfolderBase]: For 562494/562500 co-relation queries the response was YES. [2024-06-28 03:27:55,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46910 conditions, 5667 events. 3662/5667 cut-off events. For 562494/562500 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31074 event pairs, 793 based on Foata normal form. 16/5666 useless extension candidates. Maximal degree in co-relation 46795. Up to 4870 conditions per place. [2024-06-28 03:27:55,241 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 239 selfloop transitions, 102 changer transitions 0/356 dead transitions. [2024-06-28 03:27:55,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 356 transitions, 4897 flow [2024-06-28 03:27:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:27:55,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:27:55,243 INFO L175 Difference]: Start difference. First operand has 245 places, 319 transitions, 4042 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:27:55,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 356 transitions, 4897 flow [2024-06-28 03:27:56,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 356 transitions, 4688 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:56,198 INFO L231 Difference]: Finished difference. Result has 249 places, 323 transitions, 4109 flow [2024-06-28 03:27:56,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4109, PETRI_PLACES=249, PETRI_TRANSITIONS=323} [2024-06-28 03:27:56,199 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2024-06-28 03:27:56,199 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 323 transitions, 4109 flow [2024-06-28 03:27:56,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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 03:27:56,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:56,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:56,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:27:56,200 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:56,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash -110554851, now seen corresponding path program 6 times [2024-06-28 03:27:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938324068] [2024-06-28 03:27:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:56,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:57,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:57,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938324068] [2024-06-28 03:27:57,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938324068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:57,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:57,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:27:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175627845] [2024-06-28 03:27:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:27:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:27:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:27:57,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:27:57,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 323 transitions, 4109 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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 03:27:57,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:57,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:27:57,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:58,901 INFO L124 PetriNetUnfolderBase]: 3642/5635 cut-off events. [2024-06-28 03:27:58,901 INFO L125 PetriNetUnfolderBase]: For 563772/563775 co-relation queries the response was YES. [2024-06-28 03:27:58,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46524 conditions, 5635 events. 3642/5635 cut-off events. For 563772/563775 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 30844 event pairs, 765 based on Foata normal form. 14/5632 useless extension candidates. Maximal degree in co-relation 46407. Up to 4897 conditions per place. [2024-06-28 03:27:58,968 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 241 selfloop transitions, 100 changer transitions 0/356 dead transitions. [2024-06-28 03:27:58,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 356 transitions, 4854 flow [2024-06-28 03:27:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:27:58,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-28 03:27:58,969 INFO L175 Difference]: Start difference. First operand has 249 places, 323 transitions, 4109 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:27:58,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 356 transitions, 4854 flow [2024-06-28 03:27:59,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 356 transitions, 4469 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:59,912 INFO L231 Difference]: Finished difference. Result has 251 places, 322 transitions, 3856 flow [2024-06-28 03:27:59,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3652, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3856, PETRI_PLACES=251, PETRI_TRANSITIONS=322} [2024-06-28 03:27:59,913 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-28 03:27:59,913 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 322 transitions, 3856 flow [2024-06-28 03:27:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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 03:27:59,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:59,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:59,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:27:59,914 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:59,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash -831641586, now seen corresponding path program 4 times [2024-06-28 03:27:59,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:59,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821965477] [2024-06-28 03:27:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:59,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821965477] [2024-06-28 03:28:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821965477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:00,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:00,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:00,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413946408] [2024-06-28 03:28:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:00,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:00,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:00,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:28:00,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 322 transitions, 3856 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:00,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:00,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:28:00,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:02,023 INFO L124 PetriNetUnfolderBase]: 3769/5772 cut-off events. [2024-06-28 03:28:02,023 INFO L125 PetriNetUnfolderBase]: For 565405/565408 co-relation queries the response was YES. [2024-06-28 03:28:02,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46728 conditions, 5772 events. 3769/5772 cut-off events. For 565405/565408 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31147 event pairs, 862 based on Foata normal form. 4/5759 useless extension candidates. Maximal degree in co-relation 46611. Up to 5534 conditions per place. [2024-06-28 03:28:02,100 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 269 selfloop transitions, 72 changer transitions 0/344 dead transitions. [2024-06-28 03:28:02,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 344 transitions, 4944 flow [2024-06-28 03:28:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:28:02,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:28:02,102 INFO L175 Difference]: Start difference. First operand has 251 places, 322 transitions, 3856 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:28:02,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 344 transitions, 4944 flow [2024-06-28 03:28:02,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 344 transitions, 4737 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:02,914 INFO L231 Difference]: Finished difference. Result has 253 places, 328 transitions, 3881 flow [2024-06-28 03:28:02,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3881, PETRI_PLACES=253, PETRI_TRANSITIONS=328} [2024-06-28 03:28:02,914 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 210 predicate places. [2024-06-28 03:28:02,914 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 328 transitions, 3881 flow [2024-06-28 03:28:02,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:02,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:02,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:02,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:28:02,915 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:02,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:02,915 INFO L85 PathProgramCache]: Analyzing trace with hash 884323939, now seen corresponding path program 2 times [2024-06-28 03:28:02,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:02,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333452217] [2024-06-28 03:28:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:02,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333452217] [2024-06-28 03:28:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333452217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:03,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531779994] [2024-06-28 03:28:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:03,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:03,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:03,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:28:03,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 328 transitions, 3881 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:03,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:03,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:28:03,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:04,998 INFO L124 PetriNetUnfolderBase]: 3774/5775 cut-off events. [2024-06-28 03:28:04,999 INFO L125 PetriNetUnfolderBase]: For 577190/577202 co-relation queries the response was YES. [2024-06-28 03:28:05,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46716 conditions, 5775 events. 3774/5775 cut-off events. For 577190/577202 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31160 event pairs, 886 based on Foata normal form. 9/5777 useless extension candidates. Maximal degree in co-relation 46598. Up to 5691 conditions per place. [2024-06-28 03:28:05,077 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 299 selfloop transitions, 42 changer transitions 0/344 dead transitions. [2024-06-28 03:28:05,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 344 transitions, 4800 flow [2024-06-28 03:28:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 03:28:05,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2024-06-28 03:28:05,079 INFO L175 Difference]: Start difference. First operand has 253 places, 328 transitions, 3881 flow. Second operand 8 states and 118 transitions. [2024-06-28 03:28:05,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 344 transitions, 4800 flow [2024-06-28 03:28:06,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 344 transitions, 4598 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:06,018 INFO L231 Difference]: Finished difference. Result has 256 places, 331 transitions, 3825 flow [2024-06-28 03:28:06,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3679, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3825, PETRI_PLACES=256, PETRI_TRANSITIONS=331} [2024-06-28 03:28:06,018 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-28 03:28:06,018 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 331 transitions, 3825 flow [2024-06-28 03:28:06,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:06,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:06,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:28:06,019 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:06,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1248377994, now seen corresponding path program 5 times [2024-06-28 03:28:06,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:06,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766804858] [2024-06-28 03:28:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:06,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:06,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766804858] [2024-06-28 03:28:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766804858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:06,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:06,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:06,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330606084] [2024-06-28 03:28:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:06,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:06,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:28:06,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 331 transitions, 3825 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:06,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:06,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:28:06,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:08,025 INFO L124 PetriNetUnfolderBase]: 3768/5771 cut-off events. [2024-06-28 03:28:08,025 INFO L125 PetriNetUnfolderBase]: For 589578/589581 co-relation queries the response was YES. [2024-06-28 03:28:08,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46615 conditions, 5771 events. 3768/5771 cut-off events. For 589578/589581 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 31155 event pairs, 867 based on Foata normal form. 4/5758 useless extension candidates. Maximal degree in co-relation 46496. Up to 5536 conditions per place. [2024-06-28 03:28:08,088 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 269 selfloop transitions, 73 changer transitions 0/345 dead transitions. [2024-06-28 03:28:08,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 345 transitions, 4697 flow [2024-06-28 03:28:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 03:28:08,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 03:28:08,089 INFO L175 Difference]: Start difference. First operand has 256 places, 331 transitions, 3825 flow. Second operand 8 states and 123 transitions. [2024-06-28 03:28:08,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 345 transitions, 4697 flow [2024-06-28 03:28:09,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 345 transitions, 4555 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:09,018 INFO L231 Difference]: Finished difference. Result has 259 places, 331 transitions, 3835 flow [2024-06-28 03:28:09,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3683, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3835, PETRI_PLACES=259, PETRI_TRANSITIONS=331} [2024-06-28 03:28:09,019 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-28 03:28:09,019 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 331 transitions, 3835 flow [2024-06-28 03:28:09,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:09,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:09,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:09,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:28:09,019 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:09,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1235033951, now seen corresponding path program 3 times [2024-06-28 03:28:09,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:09,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289996409] [2024-06-28 03:28:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:09,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:09,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289996409] [2024-06-28 03:28:09,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289996409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:09,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:09,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13821314] [2024-06-28 03:28:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:09,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:09,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:28:09,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 331 transitions, 3835 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:09,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:09,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:28:09,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:10,919 INFO L124 PetriNetUnfolderBase]: 3773/5774 cut-off events. [2024-06-28 03:28:10,919 INFO L125 PetriNetUnfolderBase]: For 603417/603429 co-relation queries the response was YES. [2024-06-28 03:28:10,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46962 conditions, 5774 events. 3773/5774 cut-off events. For 603417/603429 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 31135 event pairs, 885 based on Foata normal form. 9/5776 useless extension candidates. Maximal degree in co-relation 46842. Up to 5689 conditions per place. [2024-06-28 03:28:10,995 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 296 selfloop transitions, 48 changer transitions 0/347 dead transitions. [2024-06-28 03:28:10,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 347 transitions, 4764 flow [2024-06-28 03:28:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 03:28:11,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-06-28 03:28:11,002 INFO L175 Difference]: Start difference. First operand has 259 places, 331 transitions, 3835 flow. Second operand 8 states and 116 transitions. [2024-06-28 03:28:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 347 transitions, 4764 flow [2024-06-28 03:28:11,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 347 transitions, 4576 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:11,857 INFO L231 Difference]: Finished difference. Result has 260 places, 334 transitions, 3805 flow [2024-06-28 03:28:11,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3805, PETRI_PLACES=260, PETRI_TRANSITIONS=334} [2024-06-28 03:28:11,857 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-28 03:28:11,857 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 334 transitions, 3805 flow [2024-06-28 03:28:11,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:11,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:11,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:28:11,858 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1404176242, now seen corresponding path program 6 times [2024-06-28 03:28:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871523907] [2024-06-28 03:28:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:12,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:12,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871523907] [2024-06-28 03:28:12,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871523907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:12,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:12,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826185290] [2024-06-28 03:28:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:12,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:12,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:12,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:12,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:28:12,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 334 transitions, 3805 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:12,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:12,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:28:12,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:13,789 INFO L124 PetriNetUnfolderBase]: 3767/5770 cut-off events. [2024-06-28 03:28:13,790 INFO L125 PetriNetUnfolderBase]: For 616662/616665 co-relation queries the response was YES. [2024-06-28 03:28:13,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46903 conditions, 5770 events. 3767/5770 cut-off events. For 616662/616665 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 31142 event pairs, 864 based on Foata normal form. 4/5757 useless extension candidates. Maximal degree in co-relation 46782. Up to 5538 conditions per place. [2024-06-28 03:28:13,858 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 269 selfloop transitions, 75 changer transitions 0/347 dead transitions. [2024-06-28 03:28:13,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 347 transitions, 4545 flow [2024-06-28 03:28:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 03:28:13,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 03:28:13,859 INFO L175 Difference]: Start difference. First operand has 260 places, 334 transitions, 3805 flow. Second operand 8 states and 121 transitions. [2024-06-28 03:28:13,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 347 transitions, 4545 flow [2024-06-28 03:28:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 347 transitions, 4391 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:15,042 INFO L231 Difference]: Finished difference. Result has 263 places, 334 transitions, 3807 flow [2024-06-28 03:28:15,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3807, PETRI_PLACES=263, PETRI_TRANSITIONS=334} [2024-06-28 03:28:15,043 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-28 03:28:15,043 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 334 transitions, 3807 flow [2024-06-28 03:28:15,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:15,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:15,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:28:15,044 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:15,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1235479421, now seen corresponding path program 4 times [2024-06-28 03:28:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:15,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511735738] [2024-06-28 03:28:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:15,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511735738] [2024-06-28 03:28:15,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511735738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:15,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:15,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:15,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113572077] [2024-06-28 03:28:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:15,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:15,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:15,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:28:15,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 334 transitions, 3807 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:15,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:15,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:28:15,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:17,103 INFO L124 PetriNetUnfolderBase]: 3764/5762 cut-off events. [2024-06-28 03:28:17,103 INFO L125 PetriNetUnfolderBase]: For 628057/628069 co-relation queries the response was YES. [2024-06-28 03:28:17,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47066 conditions, 5762 events. 3764/5762 cut-off events. For 628057/628069 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31077 event pairs, 884 based on Foata normal form. 9/5764 useless extension candidates. Maximal degree in co-relation 46944. Up to 5678 conditions per place. [2024-06-28 03:28:17,169 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 297 selfloop transitions, 46 changer transitions 0/346 dead transitions. [2024-06-28 03:28:17,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 346 transitions, 4540 flow [2024-06-28 03:28:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 03:28:17,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-06-28 03:28:17,171 INFO L175 Difference]: Start difference. First operand has 263 places, 334 transitions, 3807 flow. Second operand 8 states and 116 transitions. [2024-06-28 03:28:17,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 346 transitions, 4540 flow [2024-06-28 03:28:18,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 346 transitions, 4307 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:28:18,100 INFO L231 Difference]: Finished difference. Result has 262 places, 334 transitions, 3672 flow [2024-06-28 03:28:18,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3672, PETRI_PLACES=262, PETRI_TRANSITIONS=334} [2024-06-28 03:28:18,101 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-06-28 03:28:18,101 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 334 transitions, 3672 flow [2024-06-28 03:28:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:18,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:18,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:18,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:28:18,102 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:18,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1661356901, now seen corresponding path program 1 times [2024-06-28 03:28:18,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:18,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437866844] [2024-06-28 03:28:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:18,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437866844] [2024-06-28 03:28:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437866844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:18,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:18,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038592098] [2024-06-28 03:28:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:18,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:18,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:18,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 334 transitions, 3672 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:18,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:18,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:18,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:20,072 INFO L124 PetriNetUnfolderBase]: 3509/5510 cut-off events. [2024-06-28 03:28:20,072 INFO L125 PetriNetUnfolderBase]: For 557872/557872 co-relation queries the response was YES. [2024-06-28 03:28:20,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43127 conditions, 5510 events. 3509/5510 cut-off events. For 557872/557872 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 30995 event pairs, 809 based on Foata normal form. 1/5499 useless extension candidates. Maximal degree in co-relation 43005. Up to 5245 conditions per place. [2024-06-28 03:28:20,138 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 314 selfloop transitions, 24 changer transitions 0/361 dead transitions. [2024-06-28 03:28:20,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 361 transitions, 4650 flow [2024-06-28 03:28:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:28:20,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-28 03:28:20,140 INFO L175 Difference]: Start difference. First operand has 262 places, 334 transitions, 3672 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:28:20,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 361 transitions, 4650 flow [2024-06-28 03:28:21,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 361 transitions, 4566 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:21,201 INFO L231 Difference]: Finished difference. Result has 265 places, 340 transitions, 3740 flow [2024-06-28 03:28:21,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3740, PETRI_PLACES=265, PETRI_TRANSITIONS=340} [2024-06-28 03:28:21,202 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-28 03:28:21,202 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 340 transitions, 3740 flow [2024-06-28 03:28:21,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:21,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:21,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:28:21,203 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:21,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash 197174661, now seen corresponding path program 2 times [2024-06-28 03:28:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206627444] [2024-06-28 03:28:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:22,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:22,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206627444] [2024-06-28 03:28:22,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206627444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:22,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:22,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:22,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799132669] [2024-06-28 03:28:22,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:22,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:22,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:22,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:22,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:22,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:22,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 340 transitions, 3740 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:22,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:22,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:22,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:23,276 INFO L124 PetriNetUnfolderBase]: 3506/5506 cut-off events. [2024-06-28 03:28:23,276 INFO L125 PetriNetUnfolderBase]: For 571407/571407 co-relation queries the response was YES. [2024-06-28 03:28:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43596 conditions, 5506 events. 3506/5506 cut-off events. For 571407/571407 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30952 event pairs, 809 based on Foata normal form. 1/5495 useless extension candidates. Maximal degree in co-relation 43473. Up to 5254 conditions per place. [2024-06-28 03:28:23,342 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 315 selfloop transitions, 18 changer transitions 0/356 dead transitions. [2024-06-28 03:28:23,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 356 transitions, 4458 flow [2024-06-28 03:28:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:28:23,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 03:28:23,344 INFO L175 Difference]: Start difference. First operand has 265 places, 340 transitions, 3740 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:28:23,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 356 transitions, 4458 flow [2024-06-28 03:28:24,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 356 transitions, 4365 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:24,315 INFO L231 Difference]: Finished difference. Result has 268 places, 340 transitions, 3689 flow [2024-06-28 03:28:24,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3689, PETRI_PLACES=268, PETRI_TRANSITIONS=340} [2024-06-28 03:28:24,316 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 225 predicate places. [2024-06-28 03:28:24,316 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 340 transitions, 3689 flow [2024-06-28 03:28:24,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:24,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:24,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:24,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:28:24,316 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:24,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash 197174816, now seen corresponding path program 1 times [2024-06-28 03:28:24,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:24,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211148112] [2024-06-28 03:28:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:25,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211148112] [2024-06-28 03:28:25,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211148112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:25,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:25,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:25,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241887157] [2024-06-28 03:28:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:25,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:25,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:25,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:25,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 340 transitions, 3689 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:25,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:25,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:25,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:26,211 INFO L124 PetriNetUnfolderBase]: 3615/5617 cut-off events. [2024-06-28 03:28:26,211 INFO L125 PetriNetUnfolderBase]: For 584556/584556 co-relation queries the response was YES. [2024-06-28 03:28:26,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44416 conditions, 5617 events. 3615/5617 cut-off events. For 584556/584556 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31085 event pairs, 836 based on Foata normal form. 1/5606 useless extension candidates. Maximal degree in co-relation 44291. Up to 5490 conditions per place. [2024-06-28 03:28:26,282 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 332 selfloop transitions, 18 changer transitions 0/359 dead transitions. [2024-06-28 03:28:26,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 359 transitions, 4505 flow [2024-06-28 03:28:26,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 03:28:26,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 03:28:26,283 INFO L175 Difference]: Start difference. First operand has 268 places, 340 transitions, 3689 flow. Second operand 8 states and 124 transitions. [2024-06-28 03:28:26,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 359 transitions, 4505 flow [2024-06-28 03:28:27,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 359 transitions, 4459 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:27,110 INFO L231 Difference]: Finished difference. Result has 269 places, 343 transitions, 3755 flow [2024-06-28 03:28:27,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3643, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3755, PETRI_PLACES=269, PETRI_TRANSITIONS=343} [2024-06-28 03:28:27,110 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-28 03:28:27,110 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 343 transitions, 3755 flow [2024-06-28 03:28:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:27,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:27,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:27,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:28:27,111 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:27,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:27,111 INFO L85 PathProgramCache]: Analyzing trace with hash 200899466, now seen corresponding path program 2 times [2024-06-28 03:28:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:27,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090370946] [2024-06-28 03:28:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090370946] [2024-06-28 03:28:27,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090370946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:27,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:27,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:27,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998558796] [2024-06-28 03:28:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:27,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:28,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:28,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 343 transitions, 3755 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:28,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:28,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:28,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:29,220 INFO L124 PetriNetUnfolderBase]: 3628/5635 cut-off events. [2024-06-28 03:28:29,221 INFO L125 PetriNetUnfolderBase]: For 602576/602576 co-relation queries the response was YES. [2024-06-28 03:28:29,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45174 conditions, 5635 events. 3628/5635 cut-off events. For 602576/602576 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 31187 event pairs, 838 based on Foata normal form. 1/5624 useless extension candidates. Maximal degree in co-relation 45048. Up to 5466 conditions per place. [2024-06-28 03:28:29,279 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 313 selfloop transitions, 45 changer transitions 0/367 dead transitions. [2024-06-28 03:28:29,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 367 transitions, 5021 flow [2024-06-28 03:28:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:28:29,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 03:28:29,280 INFO L175 Difference]: Start difference. First operand has 269 places, 343 transitions, 3755 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:28:29,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 367 transitions, 5021 flow [2024-06-28 03:28:30,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 367 transitions, 4931 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:30,040 INFO L231 Difference]: Finished difference. Result has 271 places, 352 transitions, 3977 flow [2024-06-28 03:28:30,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3977, PETRI_PLACES=271, PETRI_TRANSITIONS=352} [2024-06-28 03:28:30,040 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2024-06-28 03:28:30,040 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 352 transitions, 3977 flow [2024-06-28 03:28:30,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:30,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:30,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:30,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:28:30,041 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:30,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 200899683, now seen corresponding path program 1 times [2024-06-28 03:28:30,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:30,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273744522] [2024-06-28 03:28:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:30,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273744522] [2024-06-28 03:28:30,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273744522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:30,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591626755] [2024-06-28 03:28:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:30,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:30,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:30,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:30,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:30,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 352 transitions, 3977 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:30,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:30,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:30,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:31,960 INFO L124 PetriNetUnfolderBase]: 3646/5662 cut-off events. [2024-06-28 03:28:31,960 INFO L125 PetriNetUnfolderBase]: For 626301/626301 co-relation queries the response was YES. [2024-06-28 03:28:32,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45947 conditions, 5662 events. 3646/5662 cut-off events. For 626301/626301 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31345 event pairs, 838 based on Foata normal form. 2/5652 useless extension candidates. Maximal degree in co-relation 45820. Up to 5503 conditions per place. [2024-06-28 03:28:32,031 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 333 selfloop transitions, 35 changer transitions 0/377 dead transitions. [2024-06-28 03:28:32,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 377 transitions, 5023 flow [2024-06-28 03:28:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:28:32,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 03:28:32,032 INFO L175 Difference]: Start difference. First operand has 271 places, 352 transitions, 3977 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:28:32,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 377 transitions, 5023 flow [2024-06-28 03:28:32,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 377 transitions, 4922 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:32,842 INFO L231 Difference]: Finished difference. Result has 277 places, 361 transitions, 4091 flow [2024-06-28 03:28:32,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4091, PETRI_PLACES=277, PETRI_TRANSITIONS=361} [2024-06-28 03:28:32,843 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-28 03:28:32,843 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 361 transitions, 4091 flow [2024-06-28 03:28:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:32,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:32,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:32,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:28:32,844 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:32,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash 200893731, now seen corresponding path program 3 times [2024-06-28 03:28:32,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:32,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149252047] [2024-06-28 03:28:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:32,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149252047] [2024-06-28 03:28:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149252047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:33,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485365621] [2024-06-28 03:28:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:33,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 361 transitions, 4091 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:33,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:33,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:35,014 INFO L124 PetriNetUnfolderBase]: 3558/5576 cut-off events. [2024-06-28 03:28:35,014 INFO L125 PetriNetUnfolderBase]: For 643546/643546 co-relation queries the response was YES. [2024-06-28 03:28:35,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46286 conditions, 5576 events. 3558/5576 cut-off events. For 643546/643546 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31311 event pairs, 808 based on Foata normal form. 1/5565 useless extension candidates. Maximal degree in co-relation 46156. Up to 5300 conditions per place. [2024-06-28 03:28:35,087 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 320 selfloop transitions, 30 changer transitions 0/377 dead transitions. [2024-06-28 03:28:35,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 377 transitions, 4889 flow [2024-06-28 03:28:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:28:35,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:28:35,089 INFO L175 Difference]: Start difference. First operand has 277 places, 361 transitions, 4091 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:28:35,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 377 transitions, 4889 flow [2024-06-28 03:28:36,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 377 transitions, 4825 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:36,178 INFO L231 Difference]: Finished difference. Result has 282 places, 364 transitions, 4157 flow [2024-06-28 03:28:36,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4157, PETRI_PLACES=282, PETRI_TRANSITIONS=364} [2024-06-28 03:28:36,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 239 predicate places. [2024-06-28 03:28:36,179 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 364 transitions, 4157 flow [2024-06-28 03:28:36,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:36,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:36,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:36,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:28:36,180 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:36,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash 200893886, now seen corresponding path program 3 times [2024-06-28 03:28:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:36,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805659085] [2024-06-28 03:28:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:37,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805659085] [2024-06-28 03:28:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805659085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:37,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:37,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:37,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119480327] [2024-06-28 03:28:37,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:37,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:37,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:37,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:37,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:37,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:37,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 364 transitions, 4157 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:37,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:37,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:37,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:38,296 INFO L124 PetriNetUnfolderBase]: 3648/5665 cut-off events. [2024-06-28 03:28:38,297 INFO L125 PetriNetUnfolderBase]: For 652575/652575 co-relation queries the response was YES. [2024-06-28 03:28:38,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47148 conditions, 5665 events. 3648/5665 cut-off events. For 652575/652575 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31348 event pairs, 837 based on Foata normal form. 1/5654 useless extension candidates. Maximal degree in co-relation 47015. Up to 5495 conditions per place. [2024-06-28 03:28:38,366 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 325 selfloop transitions, 44 changer transitions 0/378 dead transitions. [2024-06-28 03:28:38,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 378 transitions, 5091 flow [2024-06-28 03:28:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:28:38,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 03:28:38,367 INFO L175 Difference]: Start difference. First operand has 282 places, 364 transitions, 4157 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:28:38,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 378 transitions, 5091 flow [2024-06-28 03:28:39,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 378 transitions, 4941 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:39,851 INFO L231 Difference]: Finished difference. Result has 284 places, 364 transitions, 4101 flow [2024-06-28 03:28:39,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4007, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4101, PETRI_PLACES=284, PETRI_TRANSITIONS=364} [2024-06-28 03:28:39,851 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-28 03:28:39,851 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 364 transitions, 4101 flow [2024-06-28 03:28:39,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:39,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:39,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:39,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:28:39,852 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:39,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1636949226, now seen corresponding path program 4 times [2024-06-28 03:28:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:39,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801193718] [2024-06-28 03:28:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801193718] [2024-06-28 03:28:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801193718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:40,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:40,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726556232] [2024-06-28 03:28:40,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:40,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:40,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:40,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:40,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 364 transitions, 4101 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:40,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:40,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:40,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:41,663 INFO L124 PetriNetUnfolderBase]: 3653/5672 cut-off events. [2024-06-28 03:28:41,663 INFO L125 PetriNetUnfolderBase]: For 668270/668270 co-relation queries the response was YES. [2024-06-28 03:28:41,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47383 conditions, 5672 events. 3653/5672 cut-off events. For 668270/668270 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31379 event pairs, 835 based on Foata normal form. 1/5661 useless extension candidates. Maximal degree in co-relation 47249. Up to 5540 conditions per place. [2024-06-28 03:28:41,738 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 341 selfloop transitions, 28 changer transitions 0/378 dead transitions. [2024-06-28 03:28:41,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 378 transitions, 5103 flow [2024-06-28 03:28:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 03:28:41,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2024-06-28 03:28:41,739 INFO L175 Difference]: Start difference. First operand has 284 places, 364 transitions, 4101 flow. Second operand 8 states and 122 transitions. [2024-06-28 03:28:41,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 378 transitions, 5103 flow [2024-06-28 03:28:43,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 378 transitions, 4991 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:43,318 INFO L231 Difference]: Finished difference. Result has 285 places, 367 transitions, 4129 flow [2024-06-28 03:28:43,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4129, PETRI_PLACES=285, PETRI_TRANSITIONS=367} [2024-06-28 03:28:43,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-28 03:28:43,319 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 367 transitions, 4129 flow [2024-06-28 03:28:43,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:43,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:43,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:43,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:28:43,320 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:43,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1809056711, now seen corresponding path program 4 times [2024-06-28 03:28:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:43,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657623330] [2024-06-28 03:28:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:43,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:44,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:44,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657623330] [2024-06-28 03:28:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657623330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:44,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056468767] [2024-06-28 03:28:44,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:44,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:44,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 367 transitions, 4129 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:44,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:44,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:45,338 INFO L124 PetriNetUnfolderBase]: 3557/5575 cut-off events. [2024-06-28 03:28:45,338 INFO L125 PetriNetUnfolderBase]: For 684006/684006 co-relation queries the response was YES. [2024-06-28 03:28:45,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47001 conditions, 5575 events. 3557/5575 cut-off events. For 684006/684006 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31286 event pairs, 807 based on Foata normal form. 1/5564 useless extension candidates. Maximal degree in co-relation 46866. Up to 5325 conditions per place. [2024-06-28 03:28:45,411 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 334 selfloop transitions, 18 changer transitions 0/380 dead transitions. [2024-06-28 03:28:45,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 380 transitions, 4925 flow [2024-06-28 03:28:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:28:45,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 03:28:45,413 INFO L175 Difference]: Start difference. First operand has 285 places, 367 transitions, 4129 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:28:45,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 380 transitions, 4925 flow [2024-06-28 03:28:46,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 380 transitions, 4793 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:46,613 INFO L231 Difference]: Finished difference. Result has 287 places, 370 transitions, 4109 flow [2024-06-28 03:28:46,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3997, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4109, PETRI_PLACES=287, PETRI_TRANSITIONS=370} [2024-06-28 03:28:46,614 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-28 03:28:46,614 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 370 transitions, 4109 flow [2024-06-28 03:28:46,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:46,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:46,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:46,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:28:46,614 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:46,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1397009507, now seen corresponding path program 2 times [2024-06-28 03:28:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:46,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618875146] [2024-06-28 03:28:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:46,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:47,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:47,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618875146] [2024-06-28 03:28:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618875146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949804769] [2024-06-28 03:28:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:47,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:47,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:47,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 370 transitions, 4109 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:47,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:47,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:47,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:48,522 INFO L124 PetriNetUnfolderBase]: 3674/5703 cut-off events. [2024-06-28 03:28:48,523 INFO L125 PetriNetUnfolderBase]: For 704096/704096 co-relation queries the response was YES. [2024-06-28 03:28:48,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48309 conditions, 5703 events. 3674/5703 cut-off events. For 704096/704096 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31618 event pairs, 835 based on Foata normal form. 2/5693 useless extension candidates. Maximal degree in co-relation 48173. Up to 5557 conditions per place. [2024-06-28 03:28:48,595 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 348 selfloop transitions, 29 changer transitions 0/386 dead transitions. [2024-06-28 03:28:48,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 386 transitions, 5111 flow [2024-06-28 03:28:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:28:48,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 03:28:48,597 INFO L175 Difference]: Start difference. First operand has 287 places, 370 transitions, 4109 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:28:48,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 386 transitions, 5111 flow [2024-06-28 03:28:49,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 386 transitions, 5021 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:49,877 INFO L231 Difference]: Finished difference. Result has 289 places, 373 transitions, 4133 flow [2024-06-28 03:28:49,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4133, PETRI_PLACES=289, PETRI_TRANSITIONS=373} [2024-06-28 03:28:49,877 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-28 03:28:49,877 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 373 transitions, 4133 flow [2024-06-28 03:28:49,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:49,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:49,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:49,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:28:49,878 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:49,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:49,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1404368597, now seen corresponding path program 3 times [2024-06-28 03:28:49,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:49,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346199398] [2024-06-28 03:28:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346199398] [2024-06-28 03:28:50,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346199398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:50,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:50,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100099716] [2024-06-28 03:28:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:50,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:50,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 373 transitions, 4133 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:50,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:50,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:50,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:51,878 INFO L124 PetriNetUnfolderBase]: 3675/5705 cut-off events. [2024-06-28 03:28:51,878 INFO L125 PetriNetUnfolderBase]: For 720200/720200 co-relation queries the response was YES. [2024-06-28 03:28:51,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48413 conditions, 5705 events. 3675/5705 cut-off events. For 720200/720200 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31593 event pairs, 835 based on Foata normal form. 3/5696 useless extension candidates. Maximal degree in co-relation 48276. Up to 5578 conditions per place. [2024-06-28 03:28:51,958 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 358 selfloop transitions, 20 changer transitions 0/387 dead transitions. [2024-06-28 03:28:51,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 387 transitions, 4977 flow [2024-06-28 03:28:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 03:28:51,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:28:51,960 INFO L175 Difference]: Start difference. First operand has 289 places, 373 transitions, 4133 flow. Second operand 8 states and 119 transitions. [2024-06-28 03:28:51,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 387 transitions, 4977 flow [2024-06-28 03:28:53,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 387 transitions, 4860 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:53,520 INFO L231 Difference]: Finished difference. Result has 291 places, 376 transitions, 4125 flow [2024-06-28 03:28:53,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4125, PETRI_PLACES=291, PETRI_TRANSITIONS=376} [2024-06-28 03:28:53,520 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-06-28 03:28:53,520 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 376 transitions, 4125 flow [2024-06-28 03:28:53,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:53,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:53,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:53,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:28:53,521 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:53,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1397009290, now seen corresponding path program 5 times [2024-06-28 03:28:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:53,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540046839] [2024-06-28 03:28:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:53,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:54,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540046839] [2024-06-28 03:28:54,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540046839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:54,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:54,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79980579] [2024-06-28 03:28:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:54,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:54,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:54,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 376 transitions, 4125 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:54,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:54,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:54,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:55,465 INFO L124 PetriNetUnfolderBase]: 3680/5712 cut-off events. [2024-06-28 03:28:55,466 INFO L125 PetriNetUnfolderBase]: For 729422/729422 co-relation queries the response was YES. [2024-06-28 03:28:55,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48580 conditions, 5712 events. 3680/5712 cut-off events. For 729422/729422 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31662 event pairs, 835 based on Foata normal form. 1/5701 useless extension candidates. Maximal degree in co-relation 48443. Up to 5575 conditions per place. [2024-06-28 03:28:55,547 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 351 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2024-06-28 03:28:55,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 390 transitions, 5145 flow [2024-06-28 03:28:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 03:28:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 03:28:55,548 INFO L175 Difference]: Start difference. First operand has 291 places, 376 transitions, 4125 flow. Second operand 8 states and 123 transitions. [2024-06-28 03:28:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 390 transitions, 5145 flow [2024-06-28 03:28:56,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 390 transitions, 5072 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:56,959 INFO L231 Difference]: Finished difference. Result has 293 places, 379 transitions, 4182 flow [2024-06-28 03:28:56,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4182, PETRI_PLACES=293, PETRI_TRANSITIONS=379} [2024-06-28 03:28:56,961 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-28 03:28:56,961 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 379 transitions, 4182 flow [2024-06-28 03:28:56,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:56,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:56,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:56,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:28:56,962 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:56,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1235294909, now seen corresponding path program 4 times [2024-06-28 03:28:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200522069] [2024-06-28 03:28:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:56,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:57,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200522069] [2024-06-28 03:28:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200522069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:57,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:57,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:57,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149167219] [2024-06-28 03:28:57,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:57,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:28:57,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 379 transitions, 4182 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:57,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:57,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:28:57,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:58,866 INFO L124 PetriNetUnfolderBase]: 3674/5704 cut-off events. [2024-06-28 03:28:58,866 INFO L125 PetriNetUnfolderBase]: For 741991/741991 co-relation queries the response was YES. [2024-06-28 03:28:58,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48484 conditions, 5704 events. 3674/5704 cut-off events. For 741991/741991 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31567 event pairs, 834 based on Foata normal form. 2/5694 useless extension candidates. Maximal degree in co-relation 48346. Up to 5568 conditions per place. [2024-06-28 03:28:58,939 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 357 selfloop transitions, 25 changer transitions 0/391 dead transitions. [2024-06-28 03:28:58,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 391 transitions, 4982 flow [2024-06-28 03:28:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 03:28:58,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2024-06-28 03:28:58,941 INFO L175 Difference]: Start difference. First operand has 293 places, 379 transitions, 4182 flow. Second operand 8 states and 122 transitions. [2024-06-28 03:28:58,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 391 transitions, 4982 flow [2024-06-28 03:29:00,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 391 transitions, 4866 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:00,789 INFO L231 Difference]: Finished difference. Result has 296 places, 379 transitions, 4122 flow [2024-06-28 03:29:00,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4066, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4122, PETRI_PLACES=296, PETRI_TRANSITIONS=379} [2024-06-28 03:29:00,790 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-28 03:29:00,790 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 379 transitions, 4122 flow [2024-06-28 03:29:00,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:00,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:00,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:00,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:29:00,791 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:00,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1242444966, now seen corresponding path program 6 times [2024-06-28 03:29:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988575662] [2024-06-28 03:29:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:00,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:01,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988575662] [2024-06-28 03:29:01,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988575662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:01,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311013348] [2024-06-28 03:29:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:01,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:01,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 379 transitions, 4122 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:01,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:01,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:01,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:02,703 INFO L124 PetriNetUnfolderBase]: 3671/5700 cut-off events. [2024-06-28 03:29:02,703 INFO L125 PetriNetUnfolderBase]: For 750699/750699 co-relation queries the response was YES. [2024-06-28 03:29:02,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48489 conditions, 5700 events. 3671/5700 cut-off events. For 750699/750699 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31606 event pairs, 834 based on Foata normal form. 1/5689 useless extension candidates. Maximal degree in co-relation 48350. Up to 5579 conditions per place. [2024-06-28 03:29:02,770 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 362 selfloop transitions, 18 changer transitions 0/389 dead transitions. [2024-06-28 03:29:02,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 389 transitions, 4910 flow [2024-06-28 03:29:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 03:29:02,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2024-06-28 03:29:02,772 INFO L175 Difference]: Start difference. First operand has 296 places, 379 transitions, 4122 flow. Second operand 8 states and 118 transitions. [2024-06-28 03:29:02,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 389 transitions, 4910 flow [2024-06-28 03:29:04,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 389 transitions, 4781 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:04,421 INFO L231 Difference]: Finished difference. Result has 297 places, 379 transitions, 4035 flow [2024-06-28 03:29:04,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3993, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4035, PETRI_PLACES=297, PETRI_TRANSITIONS=379} [2024-06-28 03:29:04,422 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-28 03:29:04,422 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 379 transitions, 4035 flow [2024-06-28 03:29:04,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:04,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:04,422 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 03:29:04,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:29:04,423 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:04,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:04,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1332008367, now seen corresponding path program 1 times [2024-06-28 03:29:04,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:04,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093043905] [2024-06-28 03:29:04,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:04,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:05,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093043905] [2024-06-28 03:29:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093043905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041079628] [2024-06-28 03:29:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:05,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:05,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:05,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:05,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 379 transitions, 4035 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:05,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:05,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:06,444 INFO L124 PetriNetUnfolderBase]: 3770/5816 cut-off events. [2024-06-28 03:29:06,444 INFO L125 PetriNetUnfolderBase]: For 904225/904229 co-relation queries the response was YES. [2024-06-28 03:29:06,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52389 conditions, 5816 events. 3770/5816 cut-off events. For 904225/904229 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31957 event pairs, 787 based on Foata normal form. 6/5819 useless extension candidates. Maximal degree in co-relation 52249. Up to 5381 conditions per place. [2024-06-28 03:29:06,523 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 320 selfloop transitions, 76 changer transitions 0/419 dead transitions. [2024-06-28 03:29:06,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 419 transitions, 5250 flow [2024-06-28 03:29:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:06,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:29:06,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-28 03:29:06,524 INFO L175 Difference]: Start difference. First operand has 297 places, 379 transitions, 4035 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:29:06,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 419 transitions, 5250 flow [2024-06-28 03:29:08,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 419 transitions, 5190 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:08,614 INFO L231 Difference]: Finished difference. Result has 299 places, 393 transitions, 4358 flow [2024-06-28 03:29:08,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4358, PETRI_PLACES=299, PETRI_TRANSITIONS=393} [2024-06-28 03:29:08,614 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-06-28 03:29:08,614 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 393 transitions, 4358 flow [2024-06-28 03:29:08,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:08,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:08,615 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 03:29:08,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:29:08,615 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:08,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -974255315, now seen corresponding path program 2 times [2024-06-28 03:29:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567860493] [2024-06-28 03:29:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:08,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:09,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:09,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567860493] [2024-06-28 03:29:09,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567860493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:09,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:09,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:09,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681071126] [2024-06-28 03:29:09,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:09,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:09,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:09,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 393 transitions, 4358 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:09,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:09,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:09,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:10,523 INFO L124 PetriNetUnfolderBase]: 3805/5861 cut-off events. [2024-06-28 03:29:10,524 INFO L125 PetriNetUnfolderBase]: For 930463/930463 co-relation queries the response was YES. [2024-06-28 03:29:10,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54186 conditions, 5861 events. 3805/5861 cut-off events. For 930463/930463 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 32129 event pairs, 831 based on Foata normal form. 2/5852 useless extension candidates. Maximal degree in co-relation 54043. Up to 5538 conditions per place. [2024-06-28 03:29:10,606 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 333 selfloop transitions, 72 changer transitions 0/428 dead transitions. [2024-06-28 03:29:10,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 428 transitions, 5442 flow [2024-06-28 03:29:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:29:10,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 03:29:10,607 INFO L175 Difference]: Start difference. First operand has 299 places, 393 transitions, 4358 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:29:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 428 transitions, 5442 flow [2024-06-28 03:29:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 428 transitions, 5317 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-28 03:29:12,880 INFO L231 Difference]: Finished difference. Result has 307 places, 411 transitions, 4643 flow [2024-06-28 03:29:12,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4643, PETRI_PLACES=307, PETRI_TRANSITIONS=411} [2024-06-28 03:29:12,882 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2024-06-28 03:29:12,883 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 411 transitions, 4643 flow [2024-06-28 03:29:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:12,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:12,883 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 03:29:12,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:29:12,887 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:12,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:12,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1378721983, now seen corresponding path program 1 times [2024-06-28 03:29:12,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:12,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981249510] [2024-06-28 03:29:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:12,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:13,658 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 03:29:13,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981249510] [2024-06-28 03:29:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981249510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:13,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:13,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546670581] [2024-06-28 03:29:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:13,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:13,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:13,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 411 transitions, 4643 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:13,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:13,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:13,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:15,001 INFO L124 PetriNetUnfolderBase]: 3832/5897 cut-off events. [2024-06-28 03:29:15,001 INFO L125 PetriNetUnfolderBase]: For 945015/945021 co-relation queries the response was YES. [2024-06-28 03:29:15,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54054 conditions, 5897 events. 3832/5897 cut-off events. For 945015/945021 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 32291 event pairs, 844 based on Foata normal form. 5/5897 useless extension candidates. Maximal degree in co-relation 53908. Up to 5700 conditions per place. [2024-06-28 03:29:15,090 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 392 selfloop transitions, 26 changer transitions 0/441 dead transitions. [2024-06-28 03:29:15,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 441 transitions, 5711 flow [2024-06-28 03:29:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 03:29:15,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2024-06-28 03:29:15,091 INFO L175 Difference]: Start difference. First operand has 307 places, 411 transitions, 4643 flow. Second operand 9 states and 139 transitions. [2024-06-28 03:29:15,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 441 transitions, 5711 flow [2024-06-28 03:29:16,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 441 transitions, 5628 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:29:16,774 INFO L231 Difference]: Finished difference. Result has 316 places, 421 transitions, 4813 flow [2024-06-28 03:29:16,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4561, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4813, PETRI_PLACES=316, PETRI_TRANSITIONS=421} [2024-06-28 03:29:16,775 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 273 predicate places. [2024-06-28 03:29:16,775 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 421 transitions, 4813 flow [2024-06-28 03:29:16,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:16,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:16,775 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 03:29:16,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:29:16,776 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:16,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1141734365, now seen corresponding path program 3 times [2024-06-28 03:29:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:16,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285686209] [2024-06-28 03:29:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:17,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285686209] [2024-06-28 03:29:17,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285686209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:17,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:17,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:17,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002256010] [2024-06-28 03:29:17,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:17,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:17,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:17,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:17,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 421 transitions, 4813 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:17,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:17,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:17,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:18,761 INFO L124 PetriNetUnfolderBase]: 3866/5946 cut-off events. [2024-06-28 03:29:18,761 INFO L125 PetriNetUnfolderBase]: For 983463/983463 co-relation queries the response was YES. [2024-06-28 03:29:18,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55263 conditions, 5946 events. 3866/5946 cut-off events. For 983463/983463 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32624 event pairs, 802 based on Foata normal form. 2/5945 useless extension candidates. Maximal degree in co-relation 55113. Up to 5388 conditions per place. [2024-06-28 03:29:18,844 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 336 selfloop transitions, 98 changer transitions 0/457 dead transitions. [2024-06-28 03:29:18,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 457 transitions, 6315 flow [2024-06-28 03:29:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:29:18,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-28 03:29:18,846 INFO L175 Difference]: Start difference. First operand has 316 places, 421 transitions, 4813 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:29:18,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 457 transitions, 6315 flow [2024-06-28 03:29:20,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 457 transitions, 6189 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 03:29:20,857 INFO L231 Difference]: Finished difference. Result has 321 places, 431 transitions, 5085 flow [2024-06-28 03:29:20,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5085, PETRI_PLACES=321, PETRI_TRANSITIONS=431} [2024-06-28 03:29:20,857 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-28 03:29:20,858 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 431 transitions, 5085 flow [2024-06-28 03:29:20,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:20,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:20,858 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 03:29:20,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:29:20,858 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:20,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1141435835, now seen corresponding path program 4 times [2024-06-28 03:29:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689552347] [2024-06-28 03:29:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:20,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689552347] [2024-06-28 03:29:21,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689552347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:21,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:21,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:21,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171014989] [2024-06-28 03:29:21,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:21,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:21,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:21,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:21,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 431 transitions, 5085 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:21,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:21,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:21,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:23,059 INFO L124 PetriNetUnfolderBase]: 3884/5971 cut-off events. [2024-06-28 03:29:23,059 INFO L125 PetriNetUnfolderBase]: For 1013764/1013764 co-relation queries the response was YES. [2024-06-28 03:29:23,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56425 conditions, 5971 events. 3884/5971 cut-off events. For 1013764/1013764 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 32819 event pairs, 800 based on Foata normal form. 2/5970 useless extension candidates. Maximal degree in co-relation 56274. Up to 5407 conditions per place. [2024-06-28 03:29:23,131 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 328 selfloop transitions, 109 changer transitions 0/460 dead transitions. [2024-06-28 03:29:23,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 460 transitions, 6527 flow [2024-06-28 03:29:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:23,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:29:23,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:29:23,132 INFO L175 Difference]: Start difference. First operand has 321 places, 431 transitions, 5085 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:29:23,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 460 transitions, 6527 flow [2024-06-28 03:29:25,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 460 transitions, 6280 flow, removed 94 selfloop flow, removed 3 redundant places. [2024-06-28 03:29:25,141 INFO L231 Difference]: Finished difference. Result has 326 places, 437 transitions, 5194 flow [2024-06-28 03:29:25,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4900, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5194, PETRI_PLACES=326, PETRI_TRANSITIONS=437} [2024-06-28 03:29:25,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-06-28 03:29:25,141 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 437 transitions, 5194 flow [2024-06-28 03:29:25,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:25,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:25,142 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 03:29:25,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:29:25,142 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:25,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:25,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1141435649, now seen corresponding path program 2 times [2024-06-28 03:29:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403858245] [2024-06-28 03:29:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:25,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:25,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403858245] [2024-06-28 03:29:25,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403858245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:25,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:25,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270899613] [2024-06-28 03:29:25,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:25,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:25,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:25,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:25,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:25,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:25,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 437 transitions, 5194 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:25,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:25,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:25,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:27,205 INFO L124 PetriNetUnfolderBase]: 3905/6000 cut-off events. [2024-06-28 03:29:27,206 INFO L125 PetriNetUnfolderBase]: For 1036605/1036609 co-relation queries the response was YES. [2024-06-28 03:29:27,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56864 conditions, 6000 events. 3905/6000 cut-off events. For 1036605/1036609 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32908 event pairs, 853 based on Foata normal form. 5/6002 useless extension candidates. Maximal degree in co-relation 56711. Up to 5743 conditions per place. [2024-06-28 03:29:27,296 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 391 selfloop transitions, 53 changer transitions 0/467 dead transitions. [2024-06-28 03:29:27,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 467 transitions, 6788 flow [2024-06-28 03:29:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:29:27,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 03:29:27,297 INFO L175 Difference]: Start difference. First operand has 326 places, 437 transitions, 5194 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:29:27,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 467 transitions, 6788 flow [2024-06-28 03:29:29,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 467 transitions, 6638 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:29:29,879 INFO L231 Difference]: Finished difference. Result has 330 places, 446 transitions, 5438 flow [2024-06-28 03:29:29,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5044, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5438, PETRI_PLACES=330, PETRI_TRANSITIONS=446} [2024-06-28 03:29:29,879 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-28 03:29:29,880 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 446 transitions, 5438 flow [2024-06-28 03:29:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:29,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:29,880 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 03:29:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:29:29,880 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:29,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1141435463, now seen corresponding path program 1 times [2024-06-28 03:29:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:29,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443119776] [2024-06-28 03:29:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:30,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:30,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443119776] [2024-06-28 03:29:30,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443119776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:30,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:30,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842529089] [2024-06-28 03:29:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:30,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:30,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:30,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:29:30,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 446 transitions, 5438 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:30,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:30,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:29:30,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:31,923 INFO L124 PetriNetUnfolderBase]: 4016/6116 cut-off events. [2024-06-28 03:29:31,923 INFO L125 PetriNetUnfolderBase]: For 1062875/1062879 co-relation queries the response was YES. [2024-06-28 03:29:31,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57975 conditions, 6116 events. 4016/6116 cut-off events. For 1062875/1062879 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 33116 event pairs, 881 based on Foata normal form. 5/6118 useless extension candidates. Maximal degree in co-relation 57821. Up to 5994 conditions per place. [2024-06-28 03:29:32,008 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 418 selfloop transitions, 51 changer transitions 0/472 dead transitions. [2024-06-28 03:29:32,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 472 transitions, 6762 flow [2024-06-28 03:29:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:29:32,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-06-28 03:29:32,010 INFO L175 Difference]: Start difference. First operand has 330 places, 446 transitions, 5438 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:29:32,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 472 transitions, 6762 flow [2024-06-28 03:29:34,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 472 transitions, 6602 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-28 03:29:34,404 INFO L231 Difference]: Finished difference. Result has 335 places, 452 transitions, 5528 flow [2024-06-28 03:29:34,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5528, PETRI_PLACES=335, PETRI_TRANSITIONS=452} [2024-06-28 03:29:34,405 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 292 predicate places. [2024-06-28 03:29:34,405 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 452 transitions, 5528 flow [2024-06-28 03:29:34,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:34,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:34,405 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 03:29:34,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:29:34,405 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:34,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash 686136357, now seen corresponding path program 2 times [2024-06-28 03:29:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883651890] [2024-06-28 03:29:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:35,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883651890] [2024-06-28 03:29:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883651890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:35,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:35,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:35,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061370278] [2024-06-28 03:29:35,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:35,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:35,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:29:35,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 452 transitions, 5528 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:35,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:35,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:29:35,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:36,488 INFO L124 PetriNetUnfolderBase]: 4021/6123 cut-off events. [2024-06-28 03:29:36,488 INFO L125 PetriNetUnfolderBase]: For 1086866/1086870 co-relation queries the response was YES. [2024-06-28 03:29:36,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58592 conditions, 6123 events. 4021/6123 cut-off events. For 1086866/1086870 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 33162 event pairs, 885 based on Foata normal form. 5/6125 useless extension candidates. Maximal degree in co-relation 58436. Up to 6047 conditions per place. [2024-06-28 03:29:36,577 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 428 selfloop transitions, 40 changer transitions 0/471 dead transitions. [2024-06-28 03:29:36,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 471 transitions, 6592 flow [2024-06-28 03:29:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 03:29:36,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 03:29:36,579 INFO L175 Difference]: Start difference. First operand has 335 places, 452 transitions, 5528 flow. Second operand 8 states and 121 transitions. [2024-06-28 03:29:36,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 471 transitions, 6592 flow [2024-06-28 03:29:39,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 471 transitions, 6432 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-28 03:29:39,178 INFO L231 Difference]: Finished difference. Result has 339 places, 455 transitions, 5534 flow [2024-06-28 03:29:39,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5396, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5534, PETRI_PLACES=339, PETRI_TRANSITIONS=455} [2024-06-28 03:29:39,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-28 03:29:39,179 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 455 transitions, 5534 flow [2024-06-28 03:29:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:39,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:39,179 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 03:29:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:29:39,179 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:39,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash -964303943, now seen corresponding path program 3 times [2024-06-28 03:29:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026673616] [2024-06-28 03:29:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:39,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026673616] [2024-06-28 03:29:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026673616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:39,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:39,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439517126] [2024-06-28 03:29:39,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:39,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:39,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:39,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:29:39,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 455 transitions, 5534 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:39,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:39,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:29:39,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:41,178 INFO L124 PetriNetUnfolderBase]: 4026/6130 cut-off events. [2024-06-28 03:29:41,178 INFO L125 PetriNetUnfolderBase]: For 1108803/1108807 co-relation queries the response was YES. [2024-06-28 03:29:41,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58861 conditions, 6130 events. 4026/6130 cut-off events. For 1108803/1108807 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 33214 event pairs, 885 based on Foata normal form. 5/6132 useless extension candidates. Maximal degree in co-relation 58703. Up to 6046 conditions per place. [2024-06-28 03:29:41,263 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 427 selfloop transitions, 44 changer transitions 0/474 dead transitions. [2024-06-28 03:29:41,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 474 transitions, 6582 flow [2024-06-28 03:29:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 03:29:41,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 03:29:41,264 INFO L175 Difference]: Start difference. First operand has 339 places, 455 transitions, 5534 flow. Second operand 8 states and 123 transitions. [2024-06-28 03:29:41,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 474 transitions, 6582 flow [2024-06-28 03:29:43,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 474 transitions, 6472 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:43,664 INFO L231 Difference]: Finished difference. Result has 341 places, 458 transitions, 5576 flow [2024-06-28 03:29:43,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5424, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5576, PETRI_PLACES=341, PETRI_TRANSITIONS=458} [2024-06-28 03:29:43,665 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-28 03:29:43,665 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 458 transitions, 5576 flow [2024-06-28 03:29:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:43,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:43,665 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 03:29:43,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:29:43,666 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:43,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1201470679, now seen corresponding path program 5 times [2024-06-28 03:29:43,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19256529] [2024-06-28 03:29:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:44,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19256529] [2024-06-28 03:29:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19256529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195237268] [2024-06-28 03:29:44,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:44,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:44,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:44,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 458 transitions, 5576 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:44,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:44,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:44,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:45,852 INFO L124 PetriNetUnfolderBase]: 3962/6079 cut-off events. [2024-06-28 03:29:45,853 INFO L125 PetriNetUnfolderBase]: For 1152866/1152866 co-relation queries the response was YES. [2024-06-28 03:29:45,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59231 conditions, 6079 events. 3962/6079 cut-off events. For 1152866/1152866 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 33342 event pairs, 829 based on Foata normal form. 2/6078 useless extension candidates. Maximal degree in co-relation 59072. Up to 5714 conditions per place. [2024-06-28 03:29:45,931 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 377 selfloop transitions, 82 changer transitions 0/486 dead transitions. [2024-06-28 03:29:45,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 486 transitions, 6878 flow [2024-06-28 03:29:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:29:45,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 03:29:45,932 INFO L175 Difference]: Start difference. First operand has 341 places, 458 transitions, 5576 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:29:45,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 486 transitions, 6878 flow [2024-06-28 03:29:48,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 486 transitions, 6754 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:48,529 INFO L231 Difference]: Finished difference. Result has 344 places, 467 transitions, 5784 flow [2024-06-28 03:29:48,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5784, PETRI_PLACES=344, PETRI_TRANSITIONS=467} [2024-06-28 03:29:48,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-06-28 03:29:48,530 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 467 transitions, 5784 flow [2024-06-28 03:29:48,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:48,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:48,530 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 03:29:48,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:29:48,530 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:48,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash -964424285, now seen corresponding path program 6 times [2024-06-28 03:29:48,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:48,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284044138] [2024-06-28 03:29:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:49,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284044138] [2024-06-28 03:29:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284044138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:49,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:49,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939731286] [2024-06-28 03:29:49,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:49,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:49,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:49,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:49,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 467 transitions, 5784 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:49,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:49,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:49,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:50,915 INFO L124 PetriNetUnfolderBase]: 3972/6093 cut-off events. [2024-06-28 03:29:50,915 INFO L125 PetriNetUnfolderBase]: For 1176966/1176966 co-relation queries the response was YES. [2024-06-28 03:29:50,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59761 conditions, 6093 events. 3972/6093 cut-off events. For 1176966/1176966 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33503 event pairs, 837 based on Foata normal form. 2/6084 useless extension candidates. Maximal degree in co-relation 59600. Up to 5762 conditions per place. [2024-06-28 03:29:50,993 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 388 selfloop transitions, 70 changer transitions 0/485 dead transitions. [2024-06-28 03:29:50,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 485 transitions, 6813 flow [2024-06-28 03:29:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 03:29:50,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:29:50,994 INFO L175 Difference]: Start difference. First operand has 344 places, 467 transitions, 5784 flow. Second operand 9 states and 144 transitions. [2024-06-28 03:29:50,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 485 transitions, 6813 flow [2024-06-28 03:29:53,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 485 transitions, 6642 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:53,281 INFO L231 Difference]: Finished difference. Result has 349 places, 471 transitions, 5840 flow [2024-06-28 03:29:53,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5620, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5840, PETRI_PLACES=349, PETRI_TRANSITIONS=471} [2024-06-28 03:29:53,282 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-28 03:29:53,282 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 471 transitions, 5840 flow [2024-06-28 03:29:53,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:53,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:53,282 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 03:29:53,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:29:53,282 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:53,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash -964304129, now seen corresponding path program 3 times [2024-06-28 03:29:53,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:53,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837826365] [2024-06-28 03:29:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:53,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:53,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837826365] [2024-06-28 03:29:53,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837826365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:53,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:53,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:53,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432534774] [2024-06-28 03:29:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:53,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:53,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:54,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:54,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 471 transitions, 5840 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:54,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:54,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:54,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:55,487 INFO L124 PetriNetUnfolderBase]: 3977/6100 cut-off events. [2024-06-28 03:29:55,487 INFO L125 PetriNetUnfolderBase]: For 1195945/1195949 co-relation queries the response was YES. [2024-06-28 03:29:55,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60041 conditions, 6100 events. 3977/6100 cut-off events. For 1195945/1195949 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 33506 event pairs, 859 based on Foata normal form. 5/6102 useless extension candidates. Maximal degree in co-relation 59878. Up to 5894 conditions per place. [2024-06-28 03:29:55,578 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 430 selfloop transitions, 33 changer transitions 0/490 dead transitions. [2024-06-28 03:29:55,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 490 transitions, 6896 flow [2024-06-28 03:29:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:29:55,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:29:55,579 INFO L175 Difference]: Start difference. First operand has 349 places, 471 transitions, 5840 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:29:55,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 490 transitions, 6896 flow [2024-06-28 03:29:58,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 490 transitions, 6759 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:58,081 INFO L231 Difference]: Finished difference. Result has 352 places, 474 transitions, 5857 flow [2024-06-28 03:29:58,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5703, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5857, PETRI_PLACES=352, PETRI_TRANSITIONS=474} [2024-06-28 03:29:58,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 309 predicate places. [2024-06-28 03:29:58,096 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 474 transitions, 5857 flow [2024-06-28 03:29:58,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:58,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:58,097 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 03:29:58,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:29:58,097 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:58,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1259885471, now seen corresponding path program 1 times [2024-06-28 03:29:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:58,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386683557] [2024-06-28 03:29:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:59,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:59,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386683557] [2024-06-28 03:29:59,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386683557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:59,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:59,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:59,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107752243] [2024-06-28 03:29:59,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:59,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:59,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:59,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:59,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:59,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:29:59,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 474 transitions, 5857 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:59,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:59,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:29:59,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:00,991 INFO L124 PetriNetUnfolderBase]: 3985/6114 cut-off events. [2024-06-28 03:30:00,991 INFO L125 PetriNetUnfolderBase]: For 1224306/1224310 co-relation queries the response was YES. [2024-06-28 03:30:01,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60318 conditions, 6114 events. 3985/6114 cut-off events. For 1224306/1224310 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 33474 event pairs, 711 based on Foata normal form. 6/6117 useless extension candidates. Maximal degree in co-relation 60154. Up to 5723 conditions per place. [2024-06-28 03:30:01,069 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 410 selfloop transitions, 68 changer transitions 0/505 dead transitions. [2024-06-28 03:30:01,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 505 transitions, 7205 flow [2024-06-28 03:30:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:30:01,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:30:01,073 INFO L175 Difference]: Start difference. First operand has 352 places, 474 transitions, 5857 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:30:01,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 505 transitions, 7205 flow [2024-06-28 03:30:03,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 505 transitions, 7079 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:03,338 INFO L231 Difference]: Finished difference. Result has 354 places, 478 transitions, 5984 flow [2024-06-28 03:30:03,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5731, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5984, PETRI_PLACES=354, PETRI_TRANSITIONS=478} [2024-06-28 03:30:03,339 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 311 predicate places. [2024-06-28 03:30:03,339 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 478 transitions, 5984 flow [2024-06-28 03:30:03,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:03,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:03,339 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 03:30:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:30:03,339 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:03,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1259646461, now seen corresponding path program 2 times [2024-06-28 03:30:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:03,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805238082] [2024-06-28 03:30:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:03,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805238082] [2024-06-28 03:30:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805238082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474376853] [2024-06-28 03:30:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:04,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:30:04,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 478 transitions, 5984 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:04,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:04,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:30:04,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:06,372 INFO L124 PetriNetUnfolderBase]: 3993/6126 cut-off events. [2024-06-28 03:30:06,372 INFO L125 PetriNetUnfolderBase]: For 1250679/1250683 co-relation queries the response was YES. [2024-06-28 03:30:06,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60923 conditions, 6126 events. 3993/6126 cut-off events. For 1250679/1250683 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 33702 event pairs, 847 based on Foata normal form. 6/6129 useless extension candidates. Maximal degree in co-relation 60758. Up to 5791 conditions per place. [2024-06-28 03:30:06,457 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 403 selfloop transitions, 73 changer transitions 0/503 dead transitions. [2024-06-28 03:30:06,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 503 transitions, 7081 flow [2024-06-28 03:30:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:30:06,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 03:30:06,459 INFO L175 Difference]: Start difference. First operand has 354 places, 478 transitions, 5984 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:30:06,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 503 transitions, 7081 flow [2024-06-28 03:30:09,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 503 transitions, 6906 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:09,773 INFO L231 Difference]: Finished difference. Result has 358 places, 480 transitions, 6023 flow [2024-06-28 03:30:09,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6023, PETRI_PLACES=358, PETRI_TRANSITIONS=480} [2024-06-28 03:30:09,774 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 315 predicate places. [2024-06-28 03:30:09,774 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 480 transitions, 6023 flow [2024-06-28 03:30:09,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:09,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:09,774 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 03:30:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:30:09,775 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:09,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1488470043, now seen corresponding path program 1 times [2024-06-28 03:30:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:09,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073895904] [2024-06-28 03:30:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:09,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:10,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073895904] [2024-06-28 03:30:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073895904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:10,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905912533] [2024-06-28 03:30:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:10,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:10,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:30:10,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 480 transitions, 6023 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:10,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:10,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:30:10,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:12,427 INFO L124 PetriNetUnfolderBase]: 4101/6238 cut-off events. [2024-06-28 03:30:12,427 INFO L125 PetriNetUnfolderBase]: For 1270857/1270861 co-relation queries the response was YES. [2024-06-28 03:30:12,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61662 conditions, 6238 events. 4101/6238 cut-off events. For 1270857/1270861 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 33870 event pairs, 876 based on Foata normal form. 6/6241 useless extension candidates. Maximal degree in co-relation 61495. Up to 5928 conditions per place. [2024-06-28 03:30:12,509 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 407 selfloop transitions, 103 changer transitions 0/513 dead transitions. [2024-06-28 03:30:12,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 513 transitions, 7440 flow [2024-06-28 03:30:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:30:12,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-28 03:30:12,511 INFO L175 Difference]: Start difference. First operand has 358 places, 480 transitions, 6023 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:30:12,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 513 transitions, 7440 flow [2024-06-28 03:30:16,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 513 transitions, 7274 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:16,112 INFO L231 Difference]: Finished difference. Result has 361 places, 486 transitions, 6167 flow [2024-06-28 03:30:16,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5857, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6167, PETRI_PLACES=361, PETRI_TRANSITIONS=486} [2024-06-28 03:30:16,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-28 03:30:16,117 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 486 transitions, 6167 flow [2024-06-28 03:30:16,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:16,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:16,118 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 03:30:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:30:16,118 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:16,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1201224229, now seen corresponding path program 1 times [2024-06-28 03:30:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:16,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543423992] [2024-06-28 03:30:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543423992] [2024-06-28 03:30:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543423992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:16,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405127914] [2024-06-28 03:30:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:16,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:16,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:30:16,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 486 transitions, 6167 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:16,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:16,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:30:16,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:18,674 INFO L124 PetriNetUnfolderBase]: 4111/6250 cut-off events. [2024-06-28 03:30:18,674 INFO L125 PetriNetUnfolderBase]: For 1297751/1297755 co-relation queries the response was YES. [2024-06-28 03:30:18,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62508 conditions, 6250 events. 4111/6250 cut-off events. For 1297751/1297755 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 33953 event pairs, 887 based on Foata normal form. 6/6253 useless extension candidates. Maximal degree in co-relation 62340. Up to 6133 conditions per place. [2024-06-28 03:30:18,922 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 453 selfloop transitions, 56 changer transitions 0/512 dead transitions. [2024-06-28 03:30:18,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 512 transitions, 7595 flow [2024-06-28 03:30:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 03:30:18,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 03:30:18,923 INFO L175 Difference]: Start difference. First operand has 361 places, 486 transitions, 6167 flow. Second operand 9 states and 140 transitions. [2024-06-28 03:30:18,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 512 transitions, 7595 flow [2024-06-28 03:30:21,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 512 transitions, 7472 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:21,750 INFO L231 Difference]: Finished difference. Result has 365 places, 492 transitions, 6312 flow [2024-06-28 03:30:21,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6044, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6312, PETRI_PLACES=365, PETRI_TRANSITIONS=492} [2024-06-28 03:30:21,751 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 322 predicate places. [2024-06-28 03:30:21,751 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 492 transitions, 6312 flow [2024-06-28 03:30:21,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:21,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:21,751 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 03:30:21,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:30:21,751 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:21,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1441555847, now seen corresponding path program 2 times [2024-06-28 03:30:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:21,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200199302] [2024-06-28 03:30:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:21,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:22,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:22,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200199302] [2024-06-28 03:30:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200199302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:22,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:22,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686087627] [2024-06-28 03:30:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:22,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:22,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:22,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:22,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:30:22,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 492 transitions, 6312 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:22,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:22,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:30:22,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:24,383 INFO L124 PetriNetUnfolderBase]: 4137/6286 cut-off events. [2024-06-28 03:30:24,384 INFO L125 PetriNetUnfolderBase]: For 1334810/1334810 co-relation queries the response was YES. [2024-06-28 03:30:24,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63497 conditions, 6286 events. 4137/6286 cut-off events. For 1334810/1334810 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 34097 event pairs, 855 based on Foata normal form. 2/6285 useless extension candidates. Maximal degree in co-relation 63327. Up to 5967 conditions per place. [2024-06-28 03:30:24,495 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 409 selfloop transitions, 108 changer transitions 0/520 dead transitions. [2024-06-28 03:30:24,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 520 transitions, 7914 flow [2024-06-28 03:30:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 03:30:24,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2024-06-28 03:30:24,497 INFO L175 Difference]: Start difference. First operand has 365 places, 492 transitions, 6312 flow. Second operand 9 states and 145 transitions. [2024-06-28 03:30:24,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 520 transitions, 7914 flow [2024-06-28 03:30:28,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 520 transitions, 7807 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:28,820 INFO L231 Difference]: Finished difference. Result has 369 places, 498 transitions, 6515 flow [2024-06-28 03:30:28,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6205, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6515, PETRI_PLACES=369, PETRI_TRANSITIONS=498} [2024-06-28 03:30:28,820 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 326 predicate places. [2024-06-28 03:30:28,820 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 498 transitions, 6515 flow [2024-06-28 03:30:28,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:28,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:28,821 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 03:30:28,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:30:28,821 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:28,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1140623815, now seen corresponding path program 3 times [2024-06-28 03:30:28,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828048443] [2024-06-28 03:30:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:28,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:29,631 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 03:30:29,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:29,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828048443] [2024-06-28 03:30:29,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828048443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:29,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:29,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309540428] [2024-06-28 03:30:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:29,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:29,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:30:29,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 498 transitions, 6515 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:29,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:29,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:30:29,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:31,422 INFO L124 PetriNetUnfolderBase]: 4147/6300 cut-off events. [2024-06-28 03:30:31,422 INFO L125 PetriNetUnfolderBase]: For 1359964/1359964 co-relation queries the response was YES. [2024-06-28 03:30:31,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64002 conditions, 6300 events. 4147/6300 cut-off events. For 1359964/1359964 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34162 event pairs, 858 based on Foata normal form. 2/6299 useless extension candidates. Maximal degree in co-relation 63830. Up to 5977 conditions per place. [2024-06-28 03:30:31,520 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 411 selfloop transitions, 109 changer transitions 0/523 dead transitions. [2024-06-28 03:30:31,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 523 transitions, 8089 flow [2024-06-28 03:30:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:30:31,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 03:30:31,521 INFO L175 Difference]: Start difference. First operand has 369 places, 498 transitions, 6515 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:30:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 523 transitions, 8089 flow [2024-06-28 03:30:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 523 transitions, 7881 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:35,901 INFO L231 Difference]: Finished difference. Result has 373 places, 501 transitions, 6581 flow [2024-06-28 03:30:35,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6324, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6581, PETRI_PLACES=373, PETRI_TRANSITIONS=501} [2024-06-28 03:30:35,901 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-28 03:30:35,902 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 501 transitions, 6581 flow [2024-06-28 03:30:35,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:35,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:35,902 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 03:30:35,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:30:35,902 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:35,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:35,903 INFO L85 PathProgramCache]: Analyzing trace with hash -964416349, now seen corresponding path program 4 times [2024-06-28 03:30:35,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:35,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684585119] [2024-06-28 03:30:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:35,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:36,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:36,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684585119] [2024-06-28 03:30:36,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684585119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:36,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:36,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:36,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136142319] [2024-06-28 03:30:36,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:36,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:36,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:36,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:30:36,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 501 transitions, 6581 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:36,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:36,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:30:36,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:38,469 INFO L124 PetriNetUnfolderBase]: 4141/6292 cut-off events. [2024-06-28 03:30:38,469 INFO L125 PetriNetUnfolderBase]: For 1375111/1375111 co-relation queries the response was YES. [2024-06-28 03:30:38,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63929 conditions, 6292 events. 4141/6292 cut-off events. For 1375111/1375111 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34145 event pairs, 859 based on Foata normal form. 2/6291 useless extension candidates. Maximal degree in co-relation 63756. Up to 5972 conditions per place. [2024-06-28 03:30:38,571 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 416 selfloop transitions, 105 changer transitions 0/524 dead transitions. [2024-06-28 03:30:38,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 524 transitions, 7922 flow [2024-06-28 03:30:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:38,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:30:38,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 03:30:38,572 INFO L175 Difference]: Start difference. First operand has 373 places, 501 transitions, 6581 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:30:38,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 524 transitions, 7922 flow [2024-06-28 03:30:43,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 524 transitions, 7697 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:43,155 INFO L231 Difference]: Finished difference. Result has 376 places, 501 transitions, 6572 flow [2024-06-28 03:30:43,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6356, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6572, PETRI_PLACES=376, PETRI_TRANSITIONS=501} [2024-06-28 03:30:43,155 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-28 03:30:43,155 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 501 transitions, 6572 flow [2024-06-28 03:30:43,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:30:43,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:43,156 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 03:30:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:30:43,156 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:43,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash -964427261, now seen corresponding path program 3 times [2024-06-28 03:30:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:43,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532944245] [2024-06-28 03:30:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532944245] [2024-06-28 03:30:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532944245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:44,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:44,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720782461] [2024-06-28 03:30:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:44,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:44,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:44,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:44,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:30:44,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 501 transitions, 6572 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:44,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:44,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:30:44,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:46,258 INFO L124 PetriNetUnfolderBase]: 4047/6198 cut-off events. [2024-06-28 03:30:46,258 INFO L125 PetriNetUnfolderBase]: For 1404603/1404607 co-relation queries the response was YES. [2024-06-28 03:30:46,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63753 conditions, 6198 events. 4047/6198 cut-off events. For 1404603/1404607 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34084 event pairs, 825 based on Foata normal form. 2/6189 useless extension candidates. Maximal degree in co-relation 63579. Up to 5865 conditions per place. [2024-06-28 03:30:46,346 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 422 selfloop transitions, 71 changer transitions 0/520 dead transitions. [2024-06-28 03:30:46,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 520 transitions, 7655 flow [2024-06-28 03:30:46,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:46,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:30:46,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 03:30:46,347 INFO L175 Difference]: Start difference. First operand has 376 places, 501 transitions, 6572 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:30:46,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 520 transitions, 7655 flow [2024-06-28 03:30:51,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 520 transitions, 7408 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:51,031 INFO L231 Difference]: Finished difference. Result has 375 places, 503 transitions, 6513 flow [2024-06-28 03:30:51,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6325, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6513, PETRI_PLACES=375, PETRI_TRANSITIONS=503} [2024-06-28 03:30:51,032 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-28 03:30:51,032 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 503 transitions, 6513 flow [2024-06-28 03:30:51,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:51,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:51,032 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 03:30:51,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:30:51,032 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:51,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:51,033 INFO L85 PathProgramCache]: Analyzing trace with hash 257445711, now seen corresponding path program 4 times [2024-06-28 03:30:51,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:51,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98529088] [2024-06-28 03:30:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:51,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:51,750 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 03:30:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98529088] [2024-06-28 03:30:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98529088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:51,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:51,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:51,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384627010] [2024-06-28 03:30:51,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:51,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:51,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:30:51,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 503 transitions, 6513 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:51,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:51,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:30:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:53,602 INFO L124 PetriNetUnfolderBase]: 4068/6226 cut-off events. [2024-06-28 03:30:53,602 INFO L125 PetriNetUnfolderBase]: For 1437762/1437778 co-relation queries the response was YES. [2024-06-28 03:30:53,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64548 conditions, 6226 events. 4068/6226 cut-off events. For 1437762/1437778 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34284 event pairs, 855 based on Foata normal form. 9/6220 useless extension candidates. Maximal degree in co-relation 64373. Up to 5938 conditions per place. [2024-06-28 03:30:53,686 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 452 selfloop transitions, 58 changer transitions 0/537 dead transitions. [2024-06-28 03:30:53,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 537 transitions, 8354 flow [2024-06-28 03:30:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 03:30:53,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738095238095238 [2024-06-28 03:30:53,688 INFO L175 Difference]: Start difference. First operand has 375 places, 503 transitions, 6513 flow. Second operand 10 states and 157 transitions. [2024-06-28 03:30:53,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 537 transitions, 8354 flow [2024-06-28 03:30:58,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 537 transitions, 8188 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:58,302 INFO L231 Difference]: Finished difference. Result has 379 places, 513 transitions, 6796 flow [2024-06-28 03:30:58,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6347, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6796, PETRI_PLACES=379, PETRI_TRANSITIONS=513} [2024-06-28 03:30:58,315 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-28 03:30:58,316 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 513 transitions, 6796 flow [2024-06-28 03:30:58,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:58,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:58,316 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 03:30:58,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:30:58,316 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:58,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash -34754759, now seen corresponding path program 5 times [2024-06-28 03:30:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:58,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926982805] [2024-06-28 03:30:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926982805] [2024-06-28 03:30:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926982805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:59,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:59,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314918032] [2024-06-28 03:30:59,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:59,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:59,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:59,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:30:59,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 513 transitions, 6796 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:59,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:59,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:30:59,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:00,784 INFO L124 PetriNetUnfolderBase]: 4065/6222 cut-off events. [2024-06-28 03:31:00,784 INFO L125 PetriNetUnfolderBase]: For 1461402/1461418 co-relation queries the response was YES. [2024-06-28 03:31:00,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64896 conditions, 6222 events. 4065/6222 cut-off events. For 1461402/1461418 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34277 event pairs, 855 based on Foata normal form. 9/6216 useless extension candidates. Maximal degree in co-relation 64720. Up to 5935 conditions per place. [2024-06-28 03:31:00,871 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 447 selfloop transitions, 57 changer transitions 0/531 dead transitions. [2024-06-28 03:31:00,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 531 transitions, 8078 flow [2024-06-28 03:31:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:31:00,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 03:31:00,872 INFO L175 Difference]: Start difference. First operand has 379 places, 513 transitions, 6796 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:31:00,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 531 transitions, 8078 flow [2024-06-28 03:31:04,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 531 transitions, 7797 flow, removed 118 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:04,988 INFO L231 Difference]: Finished difference. Result has 384 places, 513 transitions, 6635 flow [2024-06-28 03:31:04,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6515, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6635, PETRI_PLACES=384, PETRI_TRANSITIONS=513} [2024-06-28 03:31:04,988 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 03:31:04,989 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 513 transitions, 6635 flow [2024-06-28 03:31:04,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:04,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:04,989 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 03:31:04,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:31:04,989 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:04,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash 251010855, now seen corresponding path program 7 times [2024-06-28 03:31:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124409338] [2024-06-28 03:31:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:04,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:05,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:05,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124409338] [2024-06-28 03:31:05,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124409338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:05,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:05,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474332286] [2024-06-28 03:31:05,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:05,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:31:05,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 513 transitions, 6635 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:05,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:05,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:31:05,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:07,489 INFO L124 PetriNetUnfolderBase]: 4075/6240 cut-off events. [2024-06-28 03:31:07,490 INFO L125 PetriNetUnfolderBase]: For 1492566/1492573 co-relation queries the response was YES. [2024-06-28 03:31:07,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65194 conditions, 6240 events. 4075/6240 cut-off events. For 1492566/1492573 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34486 event pairs, 801 based on Foata normal form. 4/6219 useless extension candidates. Maximal degree in co-relation 65016. Up to 5575 conditions per place. [2024-06-28 03:31:07,581 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 381 selfloop transitions, 135 changer transitions 0/543 dead transitions. [2024-06-28 03:31:07,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 543 transitions, 8321 flow [2024-06-28 03:31:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:31:07,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-28 03:31:07,583 INFO L175 Difference]: Start difference. First operand has 384 places, 513 transitions, 6635 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:31:07,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 543 transitions, 8321 flow [2024-06-28 03:31:11,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 543 transitions, 8207 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:11,377 INFO L231 Difference]: Finished difference. Result has 385 places, 519 transitions, 6943 flow [2024-06-28 03:31:11,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6521, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6943, PETRI_PLACES=385, PETRI_TRANSITIONS=519} [2024-06-28 03:31:11,377 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 342 predicate places. [2024-06-28 03:31:11,378 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 519 transitions, 6943 flow [2024-06-28 03:31:11,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:11,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:11,378 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 03:31:11,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:31:11,378 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:11,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1461189707, now seen corresponding path program 6 times [2024-06-28 03:31:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742497039] [2024-06-28 03:31:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:11,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742497039] [2024-06-28 03:31:12,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742497039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:12,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:12,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887742725] [2024-06-28 03:31:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:12,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:31:12,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 519 transitions, 6943 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:12,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:12,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:31:12,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:13,950 INFO L124 PetriNetUnfolderBase]: 4072/6232 cut-off events. [2024-06-28 03:31:13,950 INFO L125 PetriNetUnfolderBase]: For 1512061/1512077 co-relation queries the response was YES. [2024-06-28 03:31:14,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65983 conditions, 6232 events. 4072/6232 cut-off events. For 1512061/1512077 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34367 event pairs, 850 based on Foata normal form. 9/6226 useless extension candidates. Maximal degree in co-relation 65804. Up to 5962 conditions per place. [2024-06-28 03:31:14,035 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 471 selfloop transitions, 41 changer transitions 0/539 dead transitions. [2024-06-28 03:31:14,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 539 transitions, 8039 flow [2024-06-28 03:31:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:31:14,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 03:31:14,036 INFO L175 Difference]: Start difference. First operand has 385 places, 519 transitions, 6943 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:31:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 539 transitions, 8039 flow [2024-06-28 03:31:18,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 539 transitions, 7758 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:18,804 INFO L231 Difference]: Finished difference. Result has 388 places, 519 transitions, 6750 flow [2024-06-28 03:31:18,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6662, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6750, PETRI_PLACES=388, PETRI_TRANSITIONS=519} [2024-06-28 03:31:18,804 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-28 03:31:18,804 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 519 transitions, 6750 flow [2024-06-28 03:31:18,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:18,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:18,805 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 03:31:18,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:31:18,805 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:18,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1578230527, now seen corresponding path program 7 times [2024-06-28 03:31:18,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:18,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074609611] [2024-06-28 03:31:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:19,672 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 03:31:19,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074609611] [2024-06-28 03:31:19,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074609611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:19,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:19,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009114641] [2024-06-28 03:31:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:19,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:19,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:19,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:19,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:31:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 519 transitions, 6750 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:19,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:19,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:31:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:21,313 INFO L124 PetriNetUnfolderBase]: 4077/6239 cut-off events. [2024-06-28 03:31:21,313 INFO L125 PetriNetUnfolderBase]: For 1536475/1536491 co-relation queries the response was YES. [2024-06-28 03:31:21,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66130 conditions, 6239 events. 4077/6239 cut-off events. For 1536475/1536491 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 34401 event pairs, 854 based on Foata normal form. 9/6233 useless extension candidates. Maximal degree in co-relation 65950. Up to 5882 conditions per place. [2024-06-28 03:31:21,401 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 421 selfloop transitions, 96 changer transitions 0/544 dead transitions. [2024-06-28 03:31:21,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 544 transitions, 8508 flow [2024-06-28 03:31:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 03:31:21,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:31:21,403 INFO L175 Difference]: Start difference. First operand has 388 places, 519 transitions, 6750 flow. Second operand 9 states and 144 transitions. [2024-06-28 03:31:21,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 544 transitions, 8508 flow [2024-06-28 03:31:26,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 544 transitions, 8362 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:26,035 INFO L231 Difference]: Finished difference. Result has 392 places, 525 transitions, 7032 flow [2024-06-28 03:31:26,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6604, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7032, PETRI_PLACES=392, PETRI_TRANSITIONS=525} [2024-06-28 03:31:26,036 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-28 03:31:26,036 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 525 transitions, 7032 flow [2024-06-28 03:31:26,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:26,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:26,036 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 03:31:26,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:31:26,037 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:26,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash -273963965, now seen corresponding path program 8 times [2024-06-28 03:31:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:26,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189018016] [2024-06-28 03:31:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:26,771 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 03:31:26,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:26,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189018016] [2024-06-28 03:31:26,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189018016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:26,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:26,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:31:26,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123913605] [2024-06-28 03:31:26,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:26,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:31:26,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:31:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:31:26,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:31:26,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 525 transitions, 7032 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:26,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:26,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:31:26,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:28,433 INFO L124 PetriNetUnfolderBase]: 4087/6257 cut-off events. [2024-06-28 03:31:28,433 INFO L125 PetriNetUnfolderBase]: For 1573846/1573853 co-relation queries the response was YES. [2024-06-28 03:31:28,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66799 conditions, 6257 events. 4087/6257 cut-off events. For 1573846/1573853 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 34531 event pairs, 801 based on Foata normal form. 4/6236 useless extension candidates. Maximal degree in co-relation 66618. Up to 5588 conditions per place. [2024-06-28 03:31:28,524 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 387 selfloop transitions, 136 changer transitions 0/550 dead transitions. [2024-06-28 03:31:28,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 550 transitions, 8628 flow [2024-06-28 03:31:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:31:28,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:31:28,525 INFO L175 Difference]: Start difference. First operand has 392 places, 525 transitions, 7032 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:31:28,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 550 transitions, 8628 flow [2024-06-28 03:31:33,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 550 transitions, 8391 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:33,410 INFO L231 Difference]: Finished difference. Result has 395 places, 528 transitions, 7103 flow [2024-06-28 03:31:33,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6795, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7103, PETRI_PLACES=395, PETRI_TRANSITIONS=528} [2024-06-28 03:31:33,413 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 352 predicate places. [2024-06-28 03:31:33,414 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 528 transitions, 7103 flow [2024-06-28 03:31:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:33,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:33,414 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 03:31:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:31:33,414 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:33,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1578230713, now seen corresponding path program 4 times [2024-06-28 03:31:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668528980] [2024-06-28 03:31:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:33,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:34,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:34,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668528980] [2024-06-28 03:31:34,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668528980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:34,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40359536] [2024-06-28 03:31:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:34,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:31:34,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 528 transitions, 7103 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:34,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:34,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:31:34,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:35,925 INFO L124 PetriNetUnfolderBase]: 4194/6366 cut-off events. [2024-06-28 03:31:35,925 INFO L125 PetriNetUnfolderBase]: For 1585772/1585784 co-relation queries the response was YES. [2024-06-28 03:31:35,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67607 conditions, 6366 events. 4194/6366 cut-off events. For 1585772/1585784 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34642 event pairs, 897 based on Foata normal form. 9/6368 useless extension candidates. Maximal degree in co-relation 67424. Up to 6186 conditions per place. [2024-06-28 03:31:36,017 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 469 selfloop transitions, 81 changer transitions 0/553 dead transitions. [2024-06-28 03:31:36,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 553 transitions, 8871 flow [2024-06-28 03:31:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:31:36,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-06-28 03:31:36,018 INFO L175 Difference]: Start difference. First operand has 395 places, 528 transitions, 7103 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:31:36,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 553 transitions, 8871 flow [2024-06-28 03:31:40,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 553 transitions, 8600 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:40,460 INFO L231 Difference]: Finished difference. Result has 398 places, 534 transitions, 7166 flow [2024-06-28 03:31:40,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6832, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7166, PETRI_PLACES=398, PETRI_TRANSITIONS=534} [2024-06-28 03:31:40,461 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 355 predicate places. [2024-06-28 03:31:40,461 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 534 transitions, 7166 flow [2024-06-28 03:31:40,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:40,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:40,461 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 03:31:40,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:31:40,461 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:40,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1932909463, now seen corresponding path program 5 times [2024-06-28 03:31:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:40,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430956568] [2024-06-28 03:31:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:40,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430956568] [2024-06-28 03:31:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430956568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:41,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:41,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:41,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014521612] [2024-06-28 03:31:41,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:41,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:31:41,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 534 transitions, 7166 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:41,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:41,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:31:41,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:42,892 INFO L124 PetriNetUnfolderBase]: 4207/6384 cut-off events. [2024-06-28 03:31:42,892 INFO L125 PetriNetUnfolderBase]: For 1622523/1622535 co-relation queries the response was YES. [2024-06-28 03:31:42,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68199 conditions, 6384 events. 4207/6384 cut-off events. For 1622523/1622535 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 34761 event pairs, 885 based on Foata normal form. 9/6386 useless extension candidates. Maximal degree in co-relation 68015. Up to 6201 conditions per place. [2024-06-28 03:31:42,987 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 465 selfloop transitions, 88 changer transitions 0/556 dead transitions. [2024-06-28 03:31:42,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 556 transitions, 8944 flow [2024-06-28 03:31:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 03:31:42,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 03:31:42,989 INFO L175 Difference]: Start difference. First operand has 398 places, 534 transitions, 7166 flow. Second operand 8 states and 124 transitions. [2024-06-28 03:31:42,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 556 transitions, 8944 flow [2024-06-28 03:31:46,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 556 transitions, 8668 flow, removed 97 selfloop flow, removed 4 redundant places. [2024-06-28 03:31:46,755 INFO L231 Difference]: Finished difference. Result has 402 places, 540 transitions, 7244 flow [2024-06-28 03:31:46,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6970, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7244, PETRI_PLACES=402, PETRI_TRANSITIONS=540} [2024-06-28 03:31:46,756 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-28 03:31:46,756 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 540 transitions, 7244 flow [2024-06-28 03:31:46,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:46,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:46,756 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 03:31:46,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:31:46,757 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:46,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1932493381, now seen corresponding path program 9 times [2024-06-28 03:31:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294205377] [2024-06-28 03:31:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:46,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:47,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294205377] [2024-06-28 03:31:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294205377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:47,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:31:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655228554] [2024-06-28 03:31:47,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:47,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:31:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:31:47,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:31:47,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:31:47,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 540 transitions, 7244 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:47,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:47,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:31:47,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:49,119 INFO L124 PetriNetUnfolderBase]: 4115/6296 cut-off events. [2024-06-28 03:31:49,120 INFO L125 PetriNetUnfolderBase]: For 1659452/1659459 co-relation queries the response was YES. [2024-06-28 03:31:49,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68005 conditions, 6296 events. 4115/6296 cut-off events. For 1659452/1659459 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34787 event pairs, 812 based on Foata normal form. 4/6275 useless extension candidates. Maximal degree in co-relation 67819. Up to 5616 conditions per place. [2024-06-28 03:31:49,220 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 382 selfloop transitions, 148 changer transitions 0/561 dead transitions. [2024-06-28 03:31:49,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 561 transitions, 8851 flow [2024-06-28 03:31:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:31:49,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 03:31:49,222 INFO L175 Difference]: Start difference. First operand has 402 places, 540 transitions, 7244 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:31:49,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 561 transitions, 8851 flow [2024-06-28 03:31:53,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 561 transitions, 8695 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 03:31:53,813 INFO L231 Difference]: Finished difference. Result has 406 places, 543 transitions, 7423 flow [2024-06-28 03:31:53,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7088, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7423, PETRI_PLACES=406, PETRI_TRANSITIONS=543} [2024-06-28 03:31:53,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 363 predicate places. [2024-06-28 03:31:53,814 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 543 transitions, 7423 flow [2024-06-28 03:31:53,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:53,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:53,815 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 03:31:53,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:31:53,815 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:53,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:53,815 INFO L85 PathProgramCache]: Analyzing trace with hash 80299447, now seen corresponding path program 6 times [2024-06-28 03:31:53,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:53,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422043372] [2024-06-28 03:31:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:53,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:54,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:54,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422043372] [2024-06-28 03:31:54,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422043372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:54,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:54,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:31:54,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372344762] [2024-06-28 03:31:54,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:54,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:31:54,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:31:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:31:54,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:31:54,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 543 transitions, 7423 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:54,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:54,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:31:54,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:56,232 INFO L124 PetriNetUnfolderBase]: 4214/6394 cut-off events. [2024-06-28 03:31:56,232 INFO L125 PetriNetUnfolderBase]: For 1671407/1671419 co-relation queries the response was YES. [2024-06-28 03:31:56,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68891 conditions, 6394 events. 4214/6394 cut-off events. For 1671407/1671419 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 34846 event pairs, 890 based on Foata normal form. 9/6396 useless extension candidates. Maximal degree in co-relation 68704. Up to 6212 conditions per place. [2024-06-28 03:31:56,329 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 469 selfloop transitions, 86 changer transitions 0/558 dead transitions. [2024-06-28 03:31:56,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 558 transitions, 8811 flow [2024-06-28 03:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 03:31:56,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 03:31:56,330 INFO L175 Difference]: Start difference. First operand has 406 places, 543 transitions, 7423 flow. Second operand 8 states and 124 transitions. [2024-06-28 03:31:56,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 558 transitions, 8811 flow [2024-06-28 03:32:01,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 558 transitions, 8571 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:32:01,967 INFO L231 Difference]: Finished difference. Result has 409 places, 543 transitions, 7361 flow [2024-06-28 03:32:01,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7183, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7361, PETRI_PLACES=409, PETRI_TRANSITIONS=543} [2024-06-28 03:32:01,967 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 366 predicate places. [2024-06-28 03:32:01,967 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 543 transitions, 7361 flow [2024-06-28 03:32:01,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:01,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:01,968 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 03:32:01,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:32:01,968 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:01,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1932730717, now seen corresponding path program 8 times [2024-06-28 03:32:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45955331] [2024-06-28 03:32:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:01,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:02,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:02,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45955331] [2024-06-28 03:32:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45955331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:02,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:02,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:02,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003777475] [2024-06-28 03:32:02,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:02,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:02,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:02,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:32:02,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 543 transitions, 7361 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:02,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:02,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:32:02,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:04,489 INFO L124 PetriNetUnfolderBase]: 4125/6306 cut-off events. [2024-06-28 03:32:04,490 INFO L125 PetriNetUnfolderBase]: For 1710427/1710443 co-relation queries the response was YES. [2024-06-28 03:32:04,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68732 conditions, 6306 events. 4125/6306 cut-off events. For 1710427/1710443 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 34781 event pairs, 859 based on Foata normal form. 9/6300 useless extension candidates. Maximal degree in co-relation 68544. Up to 5940 conditions per place. [2024-06-28 03:32:04,595 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 432 selfloop transitions, 103 changer transitions 0/566 dead transitions. [2024-06-28 03:32:04,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 566 transitions, 9339 flow [2024-06-28 03:32:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:04,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:32:04,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:32:04,597 INFO L175 Difference]: Start difference. First operand has 409 places, 543 transitions, 7361 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:32:04,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 566 transitions, 9339 flow [2024-06-28 03:32:11,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 566 transitions, 9155 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:32:11,025 INFO L231 Difference]: Finished difference. Result has 410 places, 549 transitions, 7553 flow [2024-06-28 03:32:11,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7177, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7553, PETRI_PLACES=410, PETRI_TRANSITIONS=549} [2024-06-28 03:32:11,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-28 03:32:11,026 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 549 transitions, 7553 flow [2024-06-28 03:32:11,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:11,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:11,026 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 03:32:11,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:32:11,026 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:11,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1932493567, now seen corresponding path program 9 times [2024-06-28 03:32:11,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:11,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216870432] [2024-06-28 03:32:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:11,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:11,837 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 03:32:11,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:11,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216870432] [2024-06-28 03:32:11,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216870432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:11,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413286945] [2024-06-28 03:32:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:11,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:11,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:11,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:32:11,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 549 transitions, 7553 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:11,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:11,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:32:11,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:13,498 INFO L124 PetriNetUnfolderBase]: 4122/6302 cut-off events. [2024-06-28 03:32:13,499 INFO L125 PetriNetUnfolderBase]: For 1732238/1732254 co-relation queries the response was YES. [2024-06-28 03:32:13,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68868 conditions, 6302 events. 4122/6302 cut-off events. For 1732238/1732254 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 34762 event pairs, 854 based on Foata normal form. 9/6296 useless extension candidates. Maximal degree in co-relation 68679. Up to 5937 conditions per place. [2024-06-28 03:32:13,610 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 430 selfloop transitions, 104 changer transitions 0/565 dead transitions. [2024-06-28 03:32:13,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 565 transitions, 9137 flow [2024-06-28 03:32:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:32:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:32:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 03:32:13,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 03:32:13,611 INFO L175 Difference]: Start difference. First operand has 410 places, 549 transitions, 7553 flow. Second operand 9 states and 141 transitions. [2024-06-28 03:32:13,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 565 transitions, 9137 flow [2024-06-28 03:32:19,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 565 transitions, 8858 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:19,715 INFO L231 Difference]: Finished difference. Result has 415 places, 549 transitions, 7488 flow [2024-06-28 03:32:19,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7274, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7488, PETRI_PLACES=415, PETRI_TRANSITIONS=549} [2024-06-28 03:32:19,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 372 predicate places. [2024-06-28 03:32:19,716 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 549 transitions, 7488 flow [2024-06-28 03:32:19,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:19,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:19,717 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 03:32:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:32:19,717 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:19,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1429513261, now seen corresponding path program 7 times [2024-06-28 03:32:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192845149] [2024-06-28 03:32:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:19,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:20,367 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 03:32:20,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:20,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192845149] [2024-06-28 03:32:20,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192845149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:20,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:20,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:20,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248801597] [2024-06-28 03:32:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:20,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:20,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:20,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:32:20,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 549 transitions, 7488 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:20,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:20,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:32:20,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:22,135 INFO L124 PetriNetUnfolderBase]: 4229/6415 cut-off events. [2024-06-28 03:32:22,135 INFO L125 PetriNetUnfolderBase]: For 1756065/1756077 co-relation queries the response was YES. [2024-06-28 03:32:22,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69560 conditions, 6415 events. 4229/6415 cut-off events. For 1756065/1756077 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 34944 event pairs, 877 based on Foata normal form. 9/6417 useless extension candidates. Maximal degree in co-relation 69370. Up to 6340 conditions per place. [2024-06-28 03:32:22,256 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 520 selfloop transitions, 40 changer transitions 0/563 dead transitions. [2024-06-28 03:32:22,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 563 transitions, 8708 flow [2024-06-28 03:32:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 03:32:22,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3392857142857143 [2024-06-28 03:32:22,257 INFO L175 Difference]: Start difference. First operand has 415 places, 549 transitions, 7488 flow. Second operand 8 states and 114 transitions. [2024-06-28 03:32:22,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 563 transitions, 8708 flow [2024-06-28 03:32:28,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 563 transitions, 8488 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:28,418 INFO L231 Difference]: Finished difference. Result has 415 places, 552 transitions, 7424 flow [2024-06-28 03:32:28,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7268, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7424, PETRI_PLACES=415, PETRI_TRANSITIONS=552} [2024-06-28 03:32:28,418 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 372 predicate places. [2024-06-28 03:32:28,419 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 552 transitions, 7424 flow [2024-06-28 03:32:28,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:28,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:28,419 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 03:32:28,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:32:28,419 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:28,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:28,419 INFO L85 PathProgramCache]: Analyzing trace with hash 585509493, now seen corresponding path program 8 times [2024-06-28 03:32:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:28,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171339857] [2024-06-28 03:32:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:28,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171339857] [2024-06-28 03:32:29,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171339857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:29,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:29,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:29,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914449740] [2024-06-28 03:32:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:29,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:29,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:29,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:29,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:32:29,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 552 transitions, 7424 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:29,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:29,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:32:29,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:30,829 INFO L124 PetriNetUnfolderBase]: 4242/6433 cut-off events. [2024-06-28 03:32:30,829 INFO L125 PetriNetUnfolderBase]: For 1791476/1791488 co-relation queries the response was YES. [2024-06-28 03:32:30,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69933 conditions, 6433 events. 4242/6433 cut-off events. For 1791476/1791488 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 35003 event pairs, 884 based on Foata normal form. 9/6435 useless extension candidates. Maximal degree in co-relation 69742. Up to 6345 conditions per place. [2024-06-28 03:32:30,931 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 516 selfloop transitions, 51 changer transitions 0/570 dead transitions. [2024-06-28 03:32:30,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 570 transitions, 8951 flow [2024-06-28 03:32:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 03:32:30,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-06-28 03:32:30,932 INFO L175 Difference]: Start difference. First operand has 415 places, 552 transitions, 7424 flow. Second operand 8 states and 116 transitions. [2024-06-28 03:32:30,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 570 transitions, 8951 flow [2024-06-28 03:32:37,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 570 transitions, 8829 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:32:37,644 INFO L231 Difference]: Finished difference. Result has 418 places, 558 transitions, 7557 flow [2024-06-28 03:32:37,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7557, PETRI_PLACES=418, PETRI_TRANSITIONS=558} [2024-06-28 03:32:37,644 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-28 03:32:37,644 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 558 transitions, 7557 flow [2024-06-28 03:32:37,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:37,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:37,645 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 03:32:37,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:32:37,645 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:37,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:37,645 INFO L85 PathProgramCache]: Analyzing trace with hash 180298263, now seen corresponding path program 9 times [2024-06-28 03:32:37,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:37,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232278277] [2024-06-28 03:32:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:37,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:38,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:38,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232278277] [2024-06-28 03:32:38,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232278277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:38,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:38,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:38,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141465360] [2024-06-28 03:32:38,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:38,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:38,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:38,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:32:38,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 558 transitions, 7557 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:38,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:38,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:32:38,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:40,140 INFO L124 PetriNetUnfolderBase]: 4239/6429 cut-off events. [2024-06-28 03:32:40,140 INFO L125 PetriNetUnfolderBase]: For 1813311/1813323 co-relation queries the response was YES. [2024-06-28 03:32:40,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70047 conditions, 6429 events. 4239/6429 cut-off events. For 1813311/1813323 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 34977 event pairs, 884 based on Foata normal form. 9/6431 useless extension candidates. Maximal degree in co-relation 69854. Up to 6354 conditions per place. [2024-06-28 03:32:40,246 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 528 selfloop transitions, 38 changer transitions 0/569 dead transitions. [2024-06-28 03:32:40,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 569 transitions, 8725 flow [2024-06-28 03:32:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-28 03:32:40,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34226190476190477 [2024-06-28 03:32:40,248 INFO L175 Difference]: Start difference. First operand has 418 places, 558 transitions, 7557 flow. Second operand 8 states and 115 transitions. [2024-06-28 03:32:40,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 569 transitions, 8725 flow [2024-06-28 03:32:47,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 569 transitions, 8569 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:32:47,887 INFO L231 Difference]: Finished difference. Result has 421 places, 558 transitions, 7483 flow [2024-06-28 03:32:47,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7401, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7483, PETRI_PLACES=421, PETRI_TRANSITIONS=558} [2024-06-28 03:32:47,888 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-28 03:32:47,888 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 558 transitions, 7483 flow [2024-06-28 03:32:47,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:47,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:47,888 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 03:32:47,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:32:47,889 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:47,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 132245301, now seen corresponding path program 10 times [2024-06-28 03:32:47,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199732363] [2024-06-28 03:32:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:47,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:48,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:48,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199732363] [2024-06-28 03:32:48,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199732363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:48,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:48,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338954857] [2024-06-28 03:32:48,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:48,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:48,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:48,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:32:48,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 558 transitions, 7483 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:48,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:48,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:32:48,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:50,453 INFO L124 PetriNetUnfolderBase]: 4244/6436 cut-off events. [2024-06-28 03:32:50,453 INFO L125 PetriNetUnfolderBase]: For 1842334/1842346 co-relation queries the response was YES. [2024-06-28 03:32:50,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70268 conditions, 6436 events. 4244/6436 cut-off events. For 1842334/1842346 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 35066 event pairs, 882 based on Foata normal form. 9/6438 useless extension candidates. Maximal degree in co-relation 70074. Up to 6318 conditions per place. [2024-06-28 03:32:50,565 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 498 selfloop transitions, 72 changer transitions 0/573 dead transitions. [2024-06-28 03:32:50,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 573 transitions, 8956 flow [2024-06-28 03:32:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 03:32:50,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2024-06-28 03:32:50,566 INFO L175 Difference]: Start difference. First operand has 421 places, 558 transitions, 7483 flow. Second operand 8 states and 118 transitions. [2024-06-28 03:32:50,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 573 transitions, 8956 flow [2024-06-28 03:32:57,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 573 transitions, 8856 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:32:57,874 INFO L231 Difference]: Finished difference. Result has 422 places, 561 transitions, 7588 flow [2024-06-28 03:32:57,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7383, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7588, PETRI_PLACES=422, PETRI_TRANSITIONS=561} [2024-06-28 03:32:57,875 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 379 predicate places. [2024-06-28 03:32:57,875 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 561 transitions, 7588 flow [2024-06-28 03:32:57,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:57,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:57,875 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 03:32:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:32:57,876 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:57,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1648634979, now seen corresponding path program 10 times [2024-06-28 03:32:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873549243] [2024-06-28 03:32:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:58,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:58,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873549243] [2024-06-28 03:32:58,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873549243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:58,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:58,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17341266] [2024-06-28 03:32:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:58,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:58,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:58,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:32:58,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 561 transitions, 7588 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:58,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:58,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:32:58,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:00,147 INFO L124 PetriNetUnfolderBase]: 4136/6326 cut-off events. [2024-06-28 03:33:00,148 INFO L125 PetriNetUnfolderBase]: For 1869353/1869360 co-relation queries the response was YES. [2024-06-28 03:33:00,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69818 conditions, 6326 events. 4136/6326 cut-off events. For 1869353/1869360 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34906 event pairs, 833 based on Foata normal form. 4/6305 useless extension candidates. Maximal degree in co-relation 69623. Up to 5903 conditions per place. [2024-06-28 03:33:00,254 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 437 selfloop transitions, 102 changer transitions 0/574 dead transitions. [2024-06-28 03:33:00,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 574 transitions, 8950 flow [2024-06-28 03:33:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:33:00,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 03:33:00,256 INFO L175 Difference]: Start difference. First operand has 422 places, 561 transitions, 7588 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:33:00,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 574 transitions, 8950 flow [2024-06-28 03:33:07,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 574 transitions, 8668 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:07,428 INFO L231 Difference]: Finished difference. Result has 423 places, 561 transitions, 7516 flow [2024-06-28 03:33:07,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7306, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7516, PETRI_PLACES=423, PETRI_TRANSITIONS=561} [2024-06-28 03:33:07,428 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 03:33:07,429 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 561 transitions, 7516 flow [2024-06-28 03:33:07,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:07,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:07,429 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 03:33:07,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:33:07,429 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:07,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash -45018651, now seen corresponding path program 11 times [2024-06-28 03:33:07,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:07,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593649798] [2024-06-28 03:33:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:08,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593649798] [2024-06-28 03:33:08,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593649798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:08,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:08,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:08,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027085458] [2024-06-28 03:33:08,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:08,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:08,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:33:08,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 561 transitions, 7516 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:08,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:08,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:33:08,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:09,982 INFO L124 PetriNetUnfolderBase]: 4130/6318 cut-off events. [2024-06-28 03:33:09,983 INFO L125 PetriNetUnfolderBase]: For 1884151/1884158 co-relation queries the response was YES. [2024-06-28 03:33:10,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69725 conditions, 6318 events. 4130/6318 cut-off events. For 1884151/1884158 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34885 event pairs, 827 based on Foata normal form. 4/6297 useless extension candidates. Maximal degree in co-relation 69530. Up to 5970 conditions per place. [2024-06-28 03:33:10,102 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 462 selfloop transitions, 75 changer transitions 0/572 dead transitions. [2024-06-28 03:33:10,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 572 transitions, 8624 flow [2024-06-28 03:33:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:33:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:33:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 03:33:10,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 03:33:10,103 INFO L175 Difference]: Start difference. First operand has 423 places, 561 transitions, 7516 flow. Second operand 9 states and 138 transitions. [2024-06-28 03:33:10,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 572 transitions, 8624 flow [2024-06-28 03:33:17,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 572 transitions, 8316 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:17,228 INFO L231 Difference]: Finished difference. Result has 425 places, 561 transitions, 7364 flow [2024-06-28 03:33:17,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7208, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7364, PETRI_PLACES=425, PETRI_TRANSITIONS=561} [2024-06-28 03:33:17,229 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 382 predicate places. [2024-06-28 03:33:17,229 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 561 transitions, 7364 flow [2024-06-28 03:33:17,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:17,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:17,229 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 03:33:17,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:33:17,230 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:17,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash 357198957, now seen corresponding path program 10 times [2024-06-28 03:33:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:17,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187698594] [2024-06-28 03:33:17,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:17,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187698594] [2024-06-28 03:33:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187698594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076127566] [2024-06-28 03:33:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:17,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:33:17,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 561 transitions, 7364 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:17,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:17,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:33:17,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:19,507 INFO L124 PetriNetUnfolderBase]: 4135/6321 cut-off events. [2024-06-28 03:33:19,507 INFO L125 PetriNetUnfolderBase]: For 1902920/1902936 co-relation queries the response was YES. [2024-06-28 03:33:19,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69607 conditions, 6321 events. 4135/6321 cut-off events. For 1902920/1902936 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34884 event pairs, 843 based on Foata normal form. 9/6315 useless extension candidates. Maximal degree in co-relation 69412. Up to 6079 conditions per place. [2024-06-28 03:33:19,631 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 490 selfloop transitions, 51 changer transitions 0/576 dead transitions. [2024-06-28 03:33:19,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 576 transitions, 8815 flow [2024-06-28 03:33:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 03:33:19,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 03:33:19,632 INFO L175 Difference]: Start difference. First operand has 425 places, 561 transitions, 7364 flow. Second operand 8 states and 123 transitions. [2024-06-28 03:33:19,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 576 transitions, 8815 flow [2024-06-28 03:33:26,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 576 transitions, 8626 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:26,485 INFO L231 Difference]: Finished difference. Result has 426 places, 564 transitions, 7368 flow [2024-06-28 03:33:26,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7175, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7368, PETRI_PLACES=426, PETRI_TRANSITIONS=564} [2024-06-28 03:33:26,486 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 383 predicate places. [2024-06-28 03:33:26,486 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 564 transitions, 7368 flow [2024-06-28 03:33:26,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:26,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:26,487 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 03:33:26,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:33:26,488 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:26,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash 357192447, now seen corresponding path program 11 times [2024-06-28 03:33:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631430285] [2024-06-28 03:33:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:27,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631430285] [2024-06-28 03:33:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631430285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:27,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:27,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779601265] [2024-06-28 03:33:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:27,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:33:27,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 564 transitions, 7368 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:27,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:27,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:33:27,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:28,931 INFO L124 PetriNetUnfolderBase]: 4130/6313 cut-off events. [2024-06-28 03:33:28,931 INFO L125 PetriNetUnfolderBase]: For 1924357/1924375 co-relation queries the response was YES. [2024-06-28 03:33:29,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69548 conditions, 6313 events. 4130/6313 cut-off events. For 1924357/1924375 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34839 event pairs, 843 based on Foata normal form. 9/6302 useless extension candidates. Maximal degree in co-relation 69353. Up to 6072 conditions per place. [2024-06-28 03:33:29,042 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 492 selfloop transitions, 49 changer transitions 0/576 dead transitions. [2024-06-28 03:33:29,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 576 transitions, 8736 flow [2024-06-28 03:33:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 03:33:29,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 03:33:29,044 INFO L175 Difference]: Start difference. First operand has 426 places, 564 transitions, 7368 flow. Second operand 8 states and 124 transitions. [2024-06-28 03:33:29,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 576 transitions, 8736 flow [2024-06-28 03:33:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 576 transitions, 8418 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:35,777 INFO L231 Difference]: Finished difference. Result has 427 places, 564 transitions, 7154 flow [2024-06-28 03:33:35,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7050, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7154, PETRI_PLACES=427, PETRI_TRANSITIONS=564} [2024-06-28 03:33:35,778 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-28 03:33:35,778 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 564 transitions, 7154 flow [2024-06-28 03:33:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:35,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:35,778 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 03:33:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:33:35,778 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:35,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash 132233211, now seen corresponding path program 11 times [2024-06-28 03:33:35,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726589029] [2024-06-28 03:33:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:35,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726589029] [2024-06-28 03:33:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726589029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:36,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:33:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570949402] [2024-06-28 03:33:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:33:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:33:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:33:36,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:33:36,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 564 transitions, 7154 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:36,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:36,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:33:36,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:38,091 INFO L124 PetriNetUnfolderBase]: 4231/6419 cut-off events. [2024-06-28 03:33:38,092 INFO L125 PetriNetUnfolderBase]: For 1940230/1940242 co-relation queries the response was YES. [2024-06-28 03:33:38,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69838 conditions, 6419 events. 4231/6419 cut-off events. For 1940230/1940242 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34998 event pairs, 880 based on Foata normal form. 9/6421 useless extension candidates. Maximal degree in co-relation 69643. Up to 6302 conditions per place. [2024-06-28 03:33:38,199 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 502 selfloop transitions, 71 changer transitions 0/576 dead transitions. [2024-06-28 03:33:38,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 576 transitions, 8588 flow [2024-06-28 03:33:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 03:33:38,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2024-06-28 03:33:38,201 INFO L175 Difference]: Start difference. First operand has 427 places, 564 transitions, 7154 flow. Second operand 8 states and 118 transitions. [2024-06-28 03:33:38,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 576 transitions, 8588 flow [2024-06-28 03:33:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 576 transitions, 8455 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:43,288 INFO L231 Difference]: Finished difference. Result has 429 places, 564 transitions, 7169 flow [2024-06-28 03:33:43,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7021, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7169, PETRI_PLACES=429, PETRI_TRANSITIONS=564} [2024-06-28 03:33:43,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-28 03:33:43,290 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 564 transitions, 7169 flow [2024-06-28 03:33:43,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:43,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:43,291 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 03:33:43,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:33:43,292 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:43,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash 180060927, now seen corresponding path program 12 times [2024-06-28 03:33:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098115091] [2024-06-28 03:33:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:44,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:44,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098115091] [2024-06-28 03:33:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098115091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:44,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282681777] [2024-06-28 03:33:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:44,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:44,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:33:44,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 564 transitions, 7169 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:44,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:44,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:33:44,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:45,752 INFO L124 PetriNetUnfolderBase]: 4126/6309 cut-off events. [2024-06-28 03:33:45,752 INFO L125 PetriNetUnfolderBase]: For 1966681/1966697 co-relation queries the response was YES. [2024-06-28 03:33:45,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69442 conditions, 6309 events. 4126/6309 cut-off events. For 1966681/1966697 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34820 event pairs, 853 based on Foata normal form. 9/6303 useless extension candidates. Maximal degree in co-relation 69246. Up to 6093 conditions per place. [2024-06-28 03:33:45,865 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 508 selfloop transitions, 32 changer transitions 0/575 dead transitions. [2024-06-28 03:33:45,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 575 transitions, 8285 flow [2024-06-28 03:33:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 03:33:45,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 03:33:45,866 INFO L175 Difference]: Start difference. First operand has 429 places, 564 transitions, 7169 flow. Second operand 8 states and 120 transitions. [2024-06-28 03:33:45,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 575 transitions, 8285 flow [2024-06-28 03:33:52,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 575 transitions, 8090 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:52,152 INFO L231 Difference]: Finished difference. Result has 431 places, 564 transitions, 7044 flow [2024-06-28 03:33:52,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6974, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7044, PETRI_PLACES=431, PETRI_TRANSITIONS=564} [2024-06-28 03:33:52,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 388 predicate places. [2024-06-28 03:33:52,153 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 564 transitions, 7044 flow [2024-06-28 03:33:52,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:52,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:52,154 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 03:33:52,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:33:52,154 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:52,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -11317881, now seen corresponding path program 12 times [2024-06-28 03:33:52,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:52,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421053698] [2024-06-28 03:33:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:52,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:52,798 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 03:33:52,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421053698] [2024-06-28 03:33:52,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421053698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:52,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:52,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:52,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167407498] [2024-06-28 03:33:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:52,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:52,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:33:52,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 564 transitions, 7044 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:52,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:52,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:33:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:54,634 INFO L124 PetriNetUnfolderBase]: 4120/6305 cut-off events. [2024-06-28 03:33:54,635 INFO L125 PetriNetUnfolderBase]: For 1988478/1988485 co-relation queries the response was YES. [2024-06-28 03:33:54,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69249 conditions, 6305 events. 4120/6305 cut-off events. For 1988478/1988485 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34809 event pairs, 836 based on Foata normal form. 4/6284 useless extension candidates. Maximal degree in co-relation 69052. Up to 5945 conditions per place. [2024-06-28 03:33:54,756 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 464 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2024-06-28 03:33:54,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 577 transitions, 8424 flow [2024-06-28 03:33:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:33:54,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 03:33:54,758 INFO L175 Difference]: Start difference. First operand has 431 places, 564 transitions, 7044 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:33:54,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 577 transitions, 8424 flow [2024-06-28 03:34:01,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 577 transitions, 8283 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:01,791 INFO L231 Difference]: Finished difference. Result has 430 places, 564 transitions, 7065 flow [2024-06-28 03:34:01,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6903, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7065, PETRI_PLACES=430, PETRI_TRANSITIONS=564} [2024-06-28 03:34:01,792 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-28 03:34:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 564 transitions, 7065 flow [2024-06-28 03:34:01,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:01,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:01,792 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 03:34:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:34:01,793 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:01,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash 180061113, now seen corresponding path program 12 times [2024-06-28 03:34:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:01,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841138918] [2024-06-28 03:34:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:01,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:02,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:02,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841138918] [2024-06-28 03:34:02,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841138918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:02,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:02,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:02,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987548034] [2024-06-28 03:34:02,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:02,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:02,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:02,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:02,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:34:02,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 564 transitions, 7065 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:02,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:02,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:34:02,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:04,253 INFO L124 PetriNetUnfolderBase]: 4219/6403 cut-off events. [2024-06-28 03:34:04,253 INFO L125 PetriNetUnfolderBase]: For 1997375/1997387 co-relation queries the response was YES. [2024-06-28 03:34:04,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69868 conditions, 6403 events. 4219/6403 cut-off events. For 1997375/1997387 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34904 event pairs, 884 based on Foata normal form. 9/6405 useless extension candidates. Maximal degree in co-relation 69670. Up to 6319 conditions per place. [2024-06-28 03:34:04,373 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 526 selfloop transitions, 46 changer transitions 0/575 dead transitions. [2024-06-28 03:34:04,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 575 transitions, 8245 flow [2024-06-28 03:34:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 03:34:04,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-06-28 03:34:04,374 INFO L175 Difference]: Start difference. First operand has 430 places, 564 transitions, 7065 flow. Second operand 8 states and 116 transitions. [2024-06-28 03:34:04,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 575 transitions, 8245 flow [2024-06-28 03:34:10,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 575 transitions, 7913 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:34:10,998 INFO L231 Difference]: Finished difference. Result has 430 places, 564 transitions, 6831 flow [2024-06-28 03:34:10,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6733, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6831, PETRI_PLACES=430, PETRI_TRANSITIONS=564} [2024-06-28 03:34:10,999 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-28 03:34:10,999 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 564 transitions, 6831 flow [2024-06-28 03:34:10,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:10,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:10,999 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 03:34:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:34:11,000 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:11,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash 579804501, now seen corresponding path program 2 times [2024-06-28 03:34:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:11,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476851202] [2024-06-28 03:34:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:11,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:11,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:11,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476851202] [2024-06-28 03:34:11,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476851202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:11,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:11,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:11,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275280165] [2024-06-28 03:34:11,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:11,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:11,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:11,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:11,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:11,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:34:11,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 564 transitions, 6831 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:34:11,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:11,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:34:11,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:13,744 INFO L124 PetriNetUnfolderBase]: 4245/6439 cut-off events. [2024-06-28 03:34:13,744 INFO L125 PetriNetUnfolderBase]: For 2052472/2052484 co-relation queries the response was YES. [2024-06-28 03:34:13,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70470 conditions, 6439 events. 4245/6439 cut-off events. For 2052472/2052484 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 35113 event pairs, 885 based on Foata normal form. 10/6442 useless extension candidates. Maximal degree in co-relation 70272. Up to 6312 conditions per place. [2024-06-28 03:34:13,860 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 522 selfloop transitions, 62 changer transitions 0/587 dead transitions. [2024-06-28 03:34:13,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 587 transitions, 8713 flow [2024-06-28 03:34:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 03:34:13,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2024-06-28 03:34:13,861 INFO L175 Difference]: Start difference. First operand has 430 places, 564 transitions, 6831 flow. Second operand 9 states and 134 transitions. [2024-06-28 03:34:13,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 587 transitions, 8713 flow [2024-06-28 03:34:20,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 587 transitions, 8534 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:20,967 INFO L231 Difference]: Finished difference. Result has 430 places, 570 transitions, 6926 flow [2024-06-28 03:34:20,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6652, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6926, PETRI_PLACES=430, PETRI_TRANSITIONS=570} [2024-06-28 03:34:20,967 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-28 03:34:20,967 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 570 transitions, 6926 flow [2024-06-28 03:34:20,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:34:20,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:20,968 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 03:34:20,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:34:20,968 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:20,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash 354844645, now seen corresponding path program 5 times [2024-06-28 03:34:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812436003] [2024-06-28 03:34:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812436003] [2024-06-28 03:34:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812436003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:21,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:21,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530533153] [2024-06-28 03:34:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:21,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:21,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:21,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:21,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:34:21,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 570 transitions, 6926 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:34:21,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:21,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:34:21,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:23,657 INFO L124 PetriNetUnfolderBase]: 4287/6501 cut-off events. [2024-06-28 03:34:23,657 INFO L125 PetriNetUnfolderBase]: For 2118622/2118625 co-relation queries the response was YES. [2024-06-28 03:34:23,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71626 conditions, 6501 events. 4287/6501 cut-off events. For 2118622/2118625 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 35439 event pairs, 867 based on Foata normal form. 4/6488 useless extension candidates. Maximal degree in co-relation 71427. Up to 6160 conditions per place. [2024-06-28 03:34:23,772 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 474 selfloop transitions, 120 changer transitions 0/597 dead transitions. [2024-06-28 03:34:23,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 597 transitions, 9095 flow [2024-06-28 03:34:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 03:34:23,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 03:34:23,773 INFO L175 Difference]: Start difference. First operand has 430 places, 570 transitions, 6926 flow. Second operand 9 states and 141 transitions. [2024-06-28 03:34:23,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 597 transitions, 9095 flow [2024-06-28 03:34:31,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 597 transitions, 8930 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:31,659 INFO L231 Difference]: Finished difference. Result has 434 places, 579 transitions, 7148 flow [2024-06-28 03:34:31,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6761, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7148, PETRI_PLACES=434, PETRI_TRANSITIONS=579} [2024-06-28 03:34:31,660 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 391 predicate places. [2024-06-28 03:34:31,660 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 579 transitions, 7148 flow [2024-06-28 03:34:31,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:34:31,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:31,660 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 03:34:31,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:34:31,661 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:31,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:31,661 INFO L85 PathProgramCache]: Analyzing trace with hash 369129879, now seen corresponding path program 3 times [2024-06-28 03:34:31,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:31,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892322475] [2024-06-28 03:34:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:31,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:32,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:32,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892322475] [2024-06-28 03:34:32,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892322475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:32,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:32,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:34:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555789076] [2024-06-28 03:34:32,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:32,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:34:32,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:32,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:34:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:34:32,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:34:32,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 579 transitions, 7148 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:32,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:32,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:34:32,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:34,646 INFO L124 PetriNetUnfolderBase]: 4297/6515 cut-off events. [2024-06-28 03:34:34,646 INFO L125 PetriNetUnfolderBase]: For 2149717/2149717 co-relation queries the response was YES. [2024-06-28 03:34:34,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72009 conditions, 6515 events. 4297/6515 cut-off events. For 2149717/2149717 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35593 event pairs, 927 based on Foata normal form. 2/6514 useless extension candidates. Maximal degree in co-relation 71809. Up to 6466 conditions per place. [2024-06-28 03:34:34,778 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 568 selfloop transitions, 23 changer transitions 0/594 dead transitions. [2024-06-28 03:34:34,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 594 transitions, 8427 flow [2024-06-28 03:34:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 03:34:34,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328042328042328 [2024-06-28 03:34:34,780 INFO L175 Difference]: Start difference. First operand has 434 places, 579 transitions, 7148 flow. Second operand 9 states and 124 transitions. [2024-06-28 03:34:34,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 594 transitions, 8427 flow [2024-06-28 03:34:42,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 594 transitions, 8148 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:42,377 INFO L231 Difference]: Finished difference. Result has 438 places, 582 transitions, 6991 flow [2024-06-28 03:34:42,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6869, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6991, PETRI_PLACES=438, PETRI_TRANSITIONS=582} [2024-06-28 03:34:42,377 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-28 03:34:42,377 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 582 transitions, 6991 flow [2024-06-28 03:34:42,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:42,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:42,378 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 03:34:42,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:34:42,378 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:42,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:42,378 INFO L85 PathProgramCache]: Analyzing trace with hash 354832555, now seen corresponding path program 6 times [2024-06-28 03:34:42,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555972052] [2024-06-28 03:34:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:43,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555972052] [2024-06-28 03:34:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555972052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:43,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:43,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082755213] [2024-06-28 03:34:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:43,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:43,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:43,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:34:43,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 582 transitions, 6991 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:34:43,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:43,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:34:43,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:45,048 INFO L124 PetriNetUnfolderBase]: 4291/6507 cut-off events. [2024-06-28 03:34:45,049 INFO L125 PetriNetUnfolderBase]: For 2158261/2158264 co-relation queries the response was YES. [2024-06-28 03:34:45,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71204 conditions, 6507 events. 4291/6507 cut-off events. For 2158261/2158264 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35494 event pairs, 867 based on Foata normal form. 4/6494 useless extension candidates. Maximal degree in co-relation 71004. Up to 6169 conditions per place. [2024-06-28 03:34:45,163 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 474 selfloop transitions, 121 changer transitions 0/598 dead transitions. [2024-06-28 03:34:45,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 598 transitions, 8761 flow [2024-06-28 03:34:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 03:34:45,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 03:34:45,164 INFO L175 Difference]: Start difference. First operand has 438 places, 582 transitions, 6991 flow. Second operand 9 states and 138 transitions. [2024-06-28 03:34:45,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 598 transitions, 8761 flow [2024-06-28 03:34:51,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 598 transitions, 8488 flow, removed 38 selfloop flow, removed 12 redundant places. [2024-06-28 03:34:51,540 INFO L231 Difference]: Finished difference. Result has 435 places, 582 transitions, 6966 flow [2024-06-28 03:34:51,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6718, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6966, PETRI_PLACES=435, PETRI_TRANSITIONS=582} [2024-06-28 03:34:51,541 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 392 predicate places. [2024-06-28 03:34:51,541 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 582 transitions, 6966 flow [2024-06-28 03:34:51,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:34:51,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:51,541 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 03:34:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:34:51,542 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:51,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash 580207687, now seen corresponding path program 7 times [2024-06-28 03:34:51,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:51,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150763349] [2024-06-28 03:34:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:52,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:52,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150763349] [2024-06-28 03:34:52,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150763349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:52,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:52,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:52,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709314566] [2024-06-28 03:34:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:52,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:52,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:52,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:34:52,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 582 transitions, 6966 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:34:52,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:52,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:34:52,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:54,373 INFO L124 PetriNetUnfolderBase]: 4285/6499 cut-off events. [2024-06-28 03:34:54,374 INFO L125 PetriNetUnfolderBase]: For 2169372/2169375 co-relation queries the response was YES. [2024-06-28 03:34:54,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70553 conditions, 6499 events. 4285/6499 cut-off events. For 2169372/2169375 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35480 event pairs, 859 based on Foata normal form. 4/6486 useless extension candidates. Maximal degree in co-relation 70355. Up to 6164 conditions per place. [2024-06-28 03:34:54,491 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 467 selfloop transitions, 127 changer transitions 0/597 dead transitions. [2024-06-28 03:34:54,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 597 transitions, 8470 flow [2024-06-28 03:34:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 03:34:54,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35978835978835977 [2024-06-28 03:34:54,493 INFO L175 Difference]: Start difference. First operand has 435 places, 582 transitions, 6966 flow. Second operand 9 states and 136 transitions. [2024-06-28 03:34:54,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 597 transitions, 8470 flow [2024-06-28 03:35:00,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 597 transitions, 8218 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:00,874 INFO L231 Difference]: Finished difference. Result has 437 places, 582 transitions, 6974 flow [2024-06-28 03:35:00,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6714, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6974, PETRI_PLACES=437, PETRI_TRANSITIONS=582} [2024-06-28 03:35:00,888 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-28 03:35:00,888 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 582 transitions, 6974 flow [2024-06-28 03:35:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:00,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:00,889 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 03:35:00,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:35:00,889 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:00,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash 368654649, now seen corresponding path program 4 times [2024-06-28 03:35:00,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:00,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114615683] [2024-06-28 03:35:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:01,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:01,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114615683] [2024-06-28 03:35:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114615683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:01,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:01,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:01,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565214694] [2024-06-28 03:35:01,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:01,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:01,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:01,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:35:01,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 582 transitions, 6974 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:01,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:01,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:35:01,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:03,590 INFO L124 PetriNetUnfolderBase]: 4279/6487 cut-off events. [2024-06-28 03:35:03,591 INFO L125 PetriNetUnfolderBase]: For 2182087/2182099 co-relation queries the response was YES. [2024-06-28 03:35:03,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70448 conditions, 6487 events. 4279/6487 cut-off events. For 2182087/2182099 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35399 event pairs, 883 based on Foata normal form. 10/6490 useless extension candidates. Maximal degree in co-relation 70249. Up to 6359 conditions per place. [2024-06-28 03:35:03,707 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 528 selfloop transitions, 67 changer transitions 0/598 dead transitions. [2024-06-28 03:35:03,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 598 transitions, 8484 flow [2024-06-28 03:35:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 03:35:03,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2024-06-28 03:35:03,708 INFO L175 Difference]: Start difference. First operand has 437 places, 582 transitions, 6974 flow. Second operand 9 states and 132 transitions. [2024-06-28 03:35:03,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 598 transitions, 8484 flow [2024-06-28 03:35:12,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 598 transitions, 8208 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:35:12,599 INFO L231 Difference]: Finished difference. Result has 438 places, 582 transitions, 6838 flow [2024-06-28 03:35:12,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6698, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6838, PETRI_PLACES=438, PETRI_TRANSITIONS=582} [2024-06-28 03:35:12,600 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-28 03:35:12,601 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 582 transitions, 6838 flow [2024-06-28 03:35:12,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:12,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:12,601 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 03:35:12,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:35:12,601 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:12,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash -45021627, now seen corresponding path program 4 times [2024-06-28 03:35:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:12,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718593142] [2024-06-28 03:35:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:12,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718593142] [2024-06-28 03:35:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718593142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:13,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:35:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239869508] [2024-06-28 03:35:13,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:13,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:35:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:13,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:35:13,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:35:13,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:35:13,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 582 transitions, 6838 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:13,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:13,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:35:13,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:15,883 INFO L124 PetriNetUnfolderBase]: 4168/6370 cut-off events. [2024-06-28 03:35:15,883 INFO L125 PetriNetUnfolderBase]: For 2200020/2200031 co-relation queries the response was YES. [2024-06-28 03:35:15,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69630 conditions, 6370 events. 4168/6370 cut-off events. For 2200020/2200031 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35177 event pairs, 830 based on Foata normal form. 4/6340 useless extension candidates. Maximal degree in co-relation 69430. Up to 6024 conditions per place. [2024-06-28 03:35:15,982 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 489 selfloop transitions, 69 changer transitions 0/593 dead transitions. [2024-06-28 03:35:15,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 593 transitions, 7984 flow [2024-06-28 03:35:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:35:15,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 03:35:15,984 INFO L175 Difference]: Start difference. First operand has 438 places, 582 transitions, 6838 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:35:15,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 593 transitions, 7984 flow [2024-06-28 03:35:24,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 593 transitions, 7815 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:24,494 INFO L231 Difference]: Finished difference. Result has 439 places, 582 transitions, 6812 flow [2024-06-28 03:35:24,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6669, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6812, PETRI_PLACES=439, PETRI_TRANSITIONS=582} [2024-06-28 03:35:24,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-28 03:35:24,495 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 582 transitions, 6812 flow [2024-06-28 03:35:24,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:24,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:24,495 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 03:35:24,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:35:24,495 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:24,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash 179948707, now seen corresponding path program 8 times [2024-06-28 03:35:24,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:24,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550868817] [2024-06-28 03:35:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:24,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550868817] [2024-06-28 03:35:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550868817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:25,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:25,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:25,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442610863] [2024-06-28 03:35:25,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:25,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:25,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:35:25,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 582 transitions, 6812 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:25,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:25,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:35:25,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:27,282 INFO L124 PetriNetUnfolderBase]: 4284/6498 cut-off events. [2024-06-28 03:35:27,283 INFO L125 PetriNetUnfolderBase]: For 2226381/2226384 co-relation queries the response was YES. [2024-06-28 03:35:27,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70358 conditions, 6498 events. 4284/6498 cut-off events. For 2226381/2226384 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35434 event pairs, 864 based on Foata normal form. 4/6485 useless extension candidates. Maximal degree in co-relation 70157. Up to 6159 conditions per place. [2024-06-28 03:35:27,393 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 482 selfloop transitions, 116 changer transitions 0/601 dead transitions. [2024-06-28 03:35:27,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 601 transitions, 8375 flow [2024-06-28 03:35:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 03:35:27,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 03:35:27,394 INFO L175 Difference]: Start difference. First operand has 439 places, 582 transitions, 6812 flow. Second operand 9 states and 138 transitions. [2024-06-28 03:35:27,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 601 transitions, 8375 flow [2024-06-28 03:35:35,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 601 transitions, 8161 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:35:35,528 INFO L231 Difference]: Finished difference. Result has 440 places, 585 transitions, 6875 flow [2024-06-28 03:35:35,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6875, PETRI_PLACES=440, PETRI_TRANSITIONS=585} [2024-06-28 03:35:35,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-28 03:35:35,529 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 585 transitions, 6875 flow [2024-06-28 03:35:35,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:35,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:35,530 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 03:35:35,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:35:35,530 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:35,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:35,530 INFO L85 PathProgramCache]: Analyzing trace with hash 180306757, now seen corresponding path program 9 times [2024-06-28 03:35:35,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:35,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027288830] [2024-06-28 03:35:35,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:35,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:36,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027288830] [2024-06-28 03:35:36,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027288830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:36,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:36,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:36,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869274266] [2024-06-28 03:35:36,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:36,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:36,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:36,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:36,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:36,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:35:36,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 585 transitions, 6875 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:36,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:36,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:35:36,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:38,415 INFO L124 PetriNetUnfolderBase]: 4294/6512 cut-off events. [2024-06-28 03:35:38,415 INFO L125 PetriNetUnfolderBase]: For 2255878/2255881 co-relation queries the response was YES. [2024-06-28 03:35:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70379 conditions, 6512 events. 4294/6512 cut-off events. For 2255878/2255881 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35544 event pairs, 863 based on Foata normal form. 4/6499 useless extension candidates. Maximal degree in co-relation 70178. Up to 6169 conditions per place. [2024-06-28 03:35:38,530 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 485 selfloop transitions, 117 changer transitions 0/605 dead transitions. [2024-06-28 03:35:38,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 605 transitions, 8460 flow [2024-06-28 03:35:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 03:35:38,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 03:35:38,531 INFO L175 Difference]: Start difference. First operand has 440 places, 585 transitions, 6875 flow. Second operand 9 states and 140 transitions. [2024-06-28 03:35:38,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 605 transitions, 8460 flow [2024-06-28 03:35:44,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 605 transitions, 8087 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:35:44,528 INFO L231 Difference]: Finished difference. Result has 441 places, 588 transitions, 6787 flow [2024-06-28 03:35:44,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6511, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6787, PETRI_PLACES=441, PETRI_TRANSITIONS=588} [2024-06-28 03:35:44,528 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 398 predicate places. [2024-06-28 03:35:44,529 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 588 transitions, 6787 flow [2024-06-28 03:35:44,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:44,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:44,529 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 03:35:44,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:35:44,529 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:44,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:44,530 INFO L85 PathProgramCache]: Analyzing trace with hash 180307191, now seen corresponding path program 5 times [2024-06-28 03:35:44,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:44,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134942836] [2024-06-28 03:35:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:44,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134942836] [2024-06-28 03:35:45,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134942836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:45,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782632340] [2024-06-28 03:35:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:45,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:35:45,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 588 transitions, 6787 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:45,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:45,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:35:45,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:47,173 INFO L124 PetriNetUnfolderBase]: 4288/6500 cut-off events. [2024-06-28 03:35:47,173 INFO L125 PetriNetUnfolderBase]: For 2266225/2266237 co-relation queries the response was YES. [2024-06-28 03:35:47,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70212 conditions, 6500 events. 4288/6500 cut-off events. For 2266225/2266237 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35506 event pairs, 883 based on Foata normal form. 10/6503 useless extension candidates. Maximal degree in co-relation 70010. Up to 6375 conditions per place. [2024-06-28 03:35:47,287 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 537 selfloop transitions, 63 changer transitions 0/603 dead transitions. [2024-06-28 03:35:47,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 603 transitions, 8037 flow [2024-06-28 03:35:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 03:35:47,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:35:47,288 INFO L175 Difference]: Start difference. First operand has 441 places, 588 transitions, 6787 flow. Second operand 9 states and 133 transitions. [2024-06-28 03:35:47,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 603 transitions, 8037 flow [2024-06-28 03:35:54,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 603 transitions, 7665 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 03:35:54,192 INFO L231 Difference]: Finished difference. Result has 442 places, 588 transitions, 6547 flow [2024-06-28 03:35:54,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6415, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6547, PETRI_PLACES=442, PETRI_TRANSITIONS=588} [2024-06-28 03:35:54,192 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-28 03:35:54,192 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 588 transitions, 6547 flow [2024-06-28 03:35:54,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:54,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:54,193 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 03:35:54,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:35:54,193 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:54,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 180294667, now seen corresponding path program 10 times [2024-06-28 03:35:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624219213] [2024-06-28 03:35:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:54,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624219213] [2024-06-28 03:35:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624219213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:54,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:54,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087924713] [2024-06-28 03:35:54,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:54,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:54,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:55,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:35:55,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 588 transitions, 6547 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:35:55,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:55,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:35:55,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:56,936 INFO L124 PetriNetUnfolderBase]: 4282/6496 cut-off events. [2024-06-28 03:35:56,937 INFO L125 PetriNetUnfolderBase]: For 2277692/2277695 co-relation queries the response was YES. [2024-06-28 03:35:57,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69826 conditions, 6496 events. 4282/6496 cut-off events. For 2277692/2277695 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35478 event pairs, 862 based on Foata normal form. 4/6483 useless extension candidates. Maximal degree in co-relation 69623. Up to 6156 conditions per place. [2024-06-28 03:35:57,051 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 485 selfloop transitions, 116 changer transitions 0/604 dead transitions. [2024-06-28 03:35:57,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 604 transitions, 7809 flow [2024-06-28 03:35:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 03:35:57,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 03:35:57,068 INFO L175 Difference]: Start difference. First operand has 442 places, 588 transitions, 6547 flow. Second operand 9 states and 140 transitions. [2024-06-28 03:35:57,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 604 transitions, 7809 flow [2024-06-28 03:36:05,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 604 transitions, 7569 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:36:05,651 INFO L231 Difference]: Finished difference. Result has 441 places, 588 transitions, 6545 flow [2024-06-28 03:36:05,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6307, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6545, PETRI_PLACES=441, PETRI_TRANSITIONS=588} [2024-06-28 03:36:05,651 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 398 predicate places. [2024-06-28 03:36:05,651 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 588 transitions, 6545 flow [2024-06-28 03:36:05,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 03:36:05,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:05,652 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 03:36:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:36:05,652 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:05,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1163204217, now seen corresponding path program 13 times [2024-06-28 03:36:05,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:05,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625983020] [2024-06-28 03:36:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:05,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:06,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625983020] [2024-06-28 03:36:06,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625983020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:06,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146527932] [2024-06-28 03:36:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:06,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:06,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:36:06,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 588 transitions, 6545 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:06,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:06,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:36:06,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:07,984 INFO L124 PetriNetUnfolderBase]: 4204/6419 cut-off events. [2024-06-28 03:36:07,984 INFO L125 PetriNetUnfolderBase]: For 2314390/2314404 co-relation queries the response was YES. [2024-06-28 03:36:08,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69912 conditions, 6419 events. 4204/6419 cut-off events. For 2314390/2314404 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 35455 event pairs, 835 based on Foata normal form. 6/6402 useless extension candidates. Maximal degree in co-relation 69708. Up to 6062 conditions per place. [2024-06-28 03:36:08,100 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 499 selfloop transitions, 91 changer transitions 0/625 dead transitions. [2024-06-28 03:36:08,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 625 transitions, 7970 flow [2024-06-28 03:36:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:36:08,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-28 03:36:08,102 INFO L175 Difference]: Start difference. First operand has 441 places, 588 transitions, 6545 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:36:08,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 625 transitions, 7970 flow [2024-06-28 03:36:18,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 625 transitions, 7696 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:36:18,259 INFO L231 Difference]: Finished difference. Result has 441 places, 600 transitions, 6638 flow [2024-06-28 03:36:18,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6275, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6638, PETRI_PLACES=441, PETRI_TRANSITIONS=600} [2024-06-28 03:36:18,264 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 398 predicate places. [2024-06-28 03:36:18,264 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 600 transitions, 6638 flow [2024-06-28 03:36:18,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:18,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:18,264 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 03:36:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:36:18,265 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:18,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -458191359, now seen corresponding path program 14 times [2024-06-28 03:36:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:18,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818446800] [2024-06-28 03:36:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:19,002 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 03:36:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:19,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818446800] [2024-06-28 03:36:19,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818446800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:19,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:19,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073720643] [2024-06-28 03:36:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:19,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:19,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:36:19,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 600 transitions, 6638 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:19,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:19,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:36:19,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:20,915 INFO L124 PetriNetUnfolderBase]: 4264/6501 cut-off events. [2024-06-28 03:36:20,915 INFO L125 PetriNetUnfolderBase]: For 2347139/2347153 co-relation queries the response was YES. [2024-06-28 03:36:21,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70829 conditions, 6501 events. 4264/6501 cut-off events. For 2347139/2347153 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35947 event pairs, 822 based on Foata normal form. 6/6484 useless extension candidates. Maximal degree in co-relation 70624. Up to 6126 conditions per place. [2024-06-28 03:36:21,039 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 514 selfloop transitions, 102 changer transitions 0/651 dead transitions. [2024-06-28 03:36:21,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 651 transitions, 8411 flow [2024-06-28 03:36:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:36:21,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:36:21,040 INFO L175 Difference]: Start difference. First operand has 441 places, 600 transitions, 6638 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:36:21,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 651 transitions, 8411 flow [2024-06-28 03:36:29,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 651 transitions, 8133 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:29,824 INFO L231 Difference]: Finished difference. Result has 446 places, 628 transitions, 7147 flow [2024-06-28 03:36:29,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6426, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7147, PETRI_PLACES=446, PETRI_TRANSITIONS=628} [2024-06-28 03:36:29,825 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2024-06-28 03:36:29,825 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 628 transitions, 7147 flow [2024-06-28 03:36:29,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:29,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:29,825 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 03:36:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:36:29,826 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:29,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash -348320043, now seen corresponding path program 13 times [2024-06-28 03:36:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463947133] [2024-06-28 03:36:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463947133] [2024-06-28 03:36:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463947133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:30,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188882671] [2024-06-28 03:36:30,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:30,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:30,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:36:30,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 628 transitions, 7147 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:30,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:30,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:36:30,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:32,505 INFO L124 PetriNetUnfolderBase]: 4280/6524 cut-off events. [2024-06-28 03:36:32,505 INFO L125 PetriNetUnfolderBase]: For 2359460/2359474 co-relation queries the response was YES. [2024-06-28 03:36:32,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71157 conditions, 6524 events. 4280/6524 cut-off events. For 2359460/2359474 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36109 event pairs, 850 based on Foata normal form. 5/6506 useless extension candidates. Maximal degree in co-relation 70949. Up to 6294 conditions per place. [2024-06-28 03:36:32,609 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 592 selfloop transitions, 36 changer transitions 0/663 dead transitions. [2024-06-28 03:36:32,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 663 transitions, 8609 flow [2024-06-28 03:36:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:36:32,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 03:36:32,610 INFO L175 Difference]: Start difference. First operand has 446 places, 628 transitions, 7147 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:36:32,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 663 transitions, 8609 flow [2024-06-28 03:36:40,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 663 transitions, 8453 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:40,803 INFO L231 Difference]: Finished difference. Result has 455 places, 638 transitions, 7241 flow [2024-06-28 03:36:40,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6991, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7241, PETRI_PLACES=455, PETRI_TRANSITIONS=638} [2024-06-28 03:36:40,805 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 412 predicate places. [2024-06-28 03:36:40,805 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 638 transitions, 7241 flow [2024-06-28 03:36:40,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:40,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:40,805 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 03:36:40,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:36:40,806 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:40,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:40,806 INFO L85 PathProgramCache]: Analyzing trace with hash -171304029, now seen corresponding path program 15 times [2024-06-28 03:36:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370530066] [2024-06-28 03:36:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:40,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370530066] [2024-06-28 03:36:41,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370530066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:41,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:41,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:41,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365539520] [2024-06-28 03:36:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:41,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:41,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:36:41,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 638 transitions, 7241 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:41,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:41,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:36:41,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:43,520 INFO L124 PetriNetUnfolderBase]: 4284/6530 cut-off events. [2024-06-28 03:36:43,521 INFO L125 PetriNetUnfolderBase]: For 2381380/2381390 co-relation queries the response was YES. [2024-06-28 03:36:43,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71034 conditions, 6530 events. 4284/6530 cut-off events. For 2381380/2381390 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 36105 event pairs, 818 based on Foata normal form. 2/6509 useless extension candidates. Maximal degree in co-relation 70822. Up to 6161 conditions per place. [2024-06-28 03:36:43,641 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 528 selfloop transitions, 98 changer transitions 0/661 dead transitions. [2024-06-28 03:36:43,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 661 transitions, 8587 flow [2024-06-28 03:36:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:36:43,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-28 03:36:43,642 INFO L175 Difference]: Start difference. First operand has 455 places, 638 transitions, 7241 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:36:43,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 661 transitions, 8587 flow [2024-06-28 03:36:50,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 661 transitions, 8431 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:36:50,516 INFO L231 Difference]: Finished difference. Result has 455 places, 641 transitions, 7327 flow [2024-06-28 03:36:50,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7085, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7327, PETRI_PLACES=455, PETRI_TRANSITIONS=641} [2024-06-28 03:36:50,518 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 412 predicate places. [2024-06-28 03:36:50,518 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 641 transitions, 7327 flow [2024-06-28 03:36:50,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:50,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:50,519 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 03:36:50,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:36:50,519 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:50,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash -37602791, now seen corresponding path program 1 times [2024-06-28 03:36:50,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:50,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709930758] [2024-06-28 03:36:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:50,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:51,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709930758] [2024-06-28 03:36:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709930758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:51,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:51,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:36:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081227542] [2024-06-28 03:36:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:51,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:36:51,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:36:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:36:51,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:36:51,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 641 transitions, 7327 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:51,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:51,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:36:51,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:53,562 INFO L124 PetriNetUnfolderBase]: 4116/6366 cut-off events. [2024-06-28 03:36:53,562 INFO L125 PetriNetUnfolderBase]: For 2111850/2111864 co-relation queries the response was YES. [2024-06-28 03:36:53,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66362 conditions, 6366 events. 4116/6366 cut-off events. For 2111850/2111864 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 36168 event pairs, 805 based on Foata normal form. 2/6343 useless extension candidates. Maximal degree in co-relation 66149. Up to 6014 conditions per place. [2024-06-28 03:36:53,679 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 592 selfloop transitions, 29 changer transitions 0/672 dead transitions. [2024-06-28 03:36:53,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 672 transitions, 9075 flow [2024-06-28 03:36:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:36:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:36:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 03:36:53,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-28 03:36:53,680 INFO L175 Difference]: Start difference. First operand has 455 places, 641 transitions, 7327 flow. Second operand 10 states and 166 transitions. [2024-06-28 03:36:53,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 672 transitions, 9075 flow [2024-06-28 03:36:59,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 672 transitions, 8866 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:59,829 INFO L231 Difference]: Finished difference. Result has 458 places, 645 transitions, 7317 flow [2024-06-28 03:36:59,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7118, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7317, PETRI_PLACES=458, PETRI_TRANSITIONS=645} [2024-06-28 03:36:59,829 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 415 predicate places. [2024-06-28 03:36:59,830 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 645 transitions, 7317 flow [2024-06-28 03:36:59,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:59,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:59,830 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 03:36:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:36:59,830 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:59,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1814652089, now seen corresponding path program 1 times [2024-06-28 03:36:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222758179] [2024-06-28 03:36:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222758179] [2024-06-28 03:37:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222758179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:00,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:00,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507980409] [2024-06-28 03:37:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:00,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:37:00,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 645 transitions, 7317 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:00,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:00,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:37:00,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:02,722 INFO L124 PetriNetUnfolderBase]: 4247/6512 cut-off events. [2024-06-28 03:37:02,722 INFO L125 PetriNetUnfolderBase]: For 2136625/2136629 co-relation queries the response was YES. [2024-06-28 03:37:02,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67387 conditions, 6512 events. 4247/6512 cut-off events. For 2136625/2136629 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 36552 event pairs, 882 based on Foata normal form. 1/6498 useless extension candidates. Maximal degree in co-relation 67174. Up to 6326 conditions per place. [2024-06-28 03:37:02,844 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 623 selfloop transitions, 31 changer transitions 0/673 dead transitions. [2024-06-28 03:37:02,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 673 transitions, 9117 flow [2024-06-28 03:37:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 03:37:02,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 03:37:02,846 INFO L175 Difference]: Start difference. First operand has 458 places, 645 transitions, 7317 flow. Second operand 10 states and 155 transitions. [2024-06-28 03:37:02,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 673 transitions, 9117 flow [2024-06-28 03:37:09,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 673 transitions, 8996 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:09,719 INFO L231 Difference]: Finished difference. Result has 462 places, 651 transitions, 7402 flow [2024-06-28 03:37:09,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7196, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7402, PETRI_PLACES=462, PETRI_TRANSITIONS=651} [2024-06-28 03:37:09,719 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 419 predicate places. [2024-06-28 03:37:09,719 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 651 transitions, 7402 flow [2024-06-28 03:37:09,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:09,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:09,720 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 03:37:09,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:37:09,720 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:09,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1755493061, now seen corresponding path program 2 times [2024-06-28 03:37:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:09,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821425059] [2024-06-28 03:37:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:09,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:10,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:10,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821425059] [2024-06-28 03:37:10,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821425059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:10,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:10,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699063606] [2024-06-28 03:37:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:10,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:10,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:10,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:37:10,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 651 transitions, 7402 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:10,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:10,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:37:10,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:12,789 INFO L124 PetriNetUnfolderBase]: 4149/6408 cut-off events. [2024-06-28 03:37:12,790 INFO L125 PetriNetUnfolderBase]: For 2184368/2184382 co-relation queries the response was YES. [2024-06-28 03:37:12,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67463 conditions, 6408 events. 4149/6408 cut-off events. For 2184368/2184382 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36401 event pairs, 848 based on Foata normal form. 2/6385 useless extension candidates. Maximal degree in co-relation 67248. Up to 6082 conditions per place. [2024-06-28 03:37:12,913 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 596 selfloop transitions, 26 changer transitions 0/675 dead transitions. [2024-06-28 03:37:12,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 675 transitions, 8756 flow [2024-06-28 03:37:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:12,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 03:37:12,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:37:12,915 INFO L175 Difference]: Start difference. First operand has 462 places, 651 transitions, 7402 flow. Second operand 10 states and 161 transitions. [2024-06-28 03:37:12,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 675 transitions, 8756 flow [2024-06-28 03:37:20,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 675 transitions, 8651 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:20,556 INFO L231 Difference]: Finished difference. Result has 466 places, 653 transitions, 7398 flow [2024-06-28 03:37:20,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7297, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7398, PETRI_PLACES=466, PETRI_TRANSITIONS=653} [2024-06-28 03:37:20,556 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 423 predicate places. [2024-06-28 03:37:20,556 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 653 transitions, 7398 flow [2024-06-28 03:37:20,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:20,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:20,557 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 03:37:20,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:37:20,557 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:20,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1755377617, now seen corresponding path program 2 times [2024-06-28 03:37:20,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:20,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225843972] [2024-06-28 03:37:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:20,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:21,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225843972] [2024-06-28 03:37:21,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225843972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:21,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:21,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:21,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541560095] [2024-06-28 03:37:21,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:21,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:21,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:37:21,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 653 transitions, 7398 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:21,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:21,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:37:21,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:23,594 INFO L124 PetriNetUnfolderBase]: 4260/6531 cut-off events. [2024-06-28 03:37:23,595 INFO L125 PetriNetUnfolderBase]: For 2197365/2197369 co-relation queries the response was YES. [2024-06-28 03:37:23,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68187 conditions, 6531 events. 4260/6531 cut-off events. For 2197365/2197369 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36681 event pairs, 882 based on Foata normal form. 1/6517 useless extension candidates. Maximal degree in co-relation 67970. Up to 6359 conditions per place. [2024-06-28 03:37:23,701 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 629 selfloop transitions, 26 changer transitions 0/674 dead transitions. [2024-06-28 03:37:23,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 674 transitions, 9110 flow [2024-06-28 03:37:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 03:37:23,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2024-06-28 03:37:23,702 INFO L175 Difference]: Start difference. First operand has 466 places, 653 transitions, 7398 flow. Second operand 9 states and 139 transitions. [2024-06-28 03:37:23,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 674 transitions, 9110 flow [2024-06-28 03:37:30,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 674 transitions, 9029 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:30,286 INFO L231 Difference]: Finished difference. Result has 467 places, 656 transitions, 7427 flow [2024-06-28 03:37:30,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7317, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7427, PETRI_PLACES=467, PETRI_TRANSITIONS=656} [2024-06-28 03:37:30,287 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-28 03:37:30,287 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 656 transitions, 7427 flow [2024-06-28 03:37:30,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:30,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:30,287 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 03:37:30,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:37:30,287 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:30,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash -34745831, now seen corresponding path program 3 times [2024-06-28 03:37:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:30,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201758813] [2024-06-28 03:37:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:30,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:31,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201758813] [2024-06-28 03:37:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201758813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:31,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:31,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793657528] [2024-06-28 03:37:31,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:31,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:31,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:31,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:37:31,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 656 transitions, 7427 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:31,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:31,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:37:31,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:33,214 INFO L124 PetriNetUnfolderBase]: 4149/6408 cut-off events. [2024-06-28 03:37:33,214 INFO L125 PetriNetUnfolderBase]: For 2220456/2220470 co-relation queries the response was YES. [2024-06-28 03:37:33,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67498 conditions, 6408 events. 4149/6408 cut-off events. For 2220456/2220470 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36355 event pairs, 847 based on Foata normal form. 2/6385 useless extension candidates. Maximal degree in co-relation 67280. Up to 6092 conditions per place. [2024-06-28 03:37:33,331 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 600 selfloop transitions, 20 changer transitions 0/674 dead transitions. [2024-06-28 03:37:33,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 674 transitions, 8723 flow [2024-06-28 03:37:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 03:37:33,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:37:33,333 INFO L175 Difference]: Start difference. First operand has 467 places, 656 transitions, 7427 flow. Second operand 9 states and 144 transitions. [2024-06-28 03:37:33,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 674 transitions, 8723 flow [2024-06-28 03:37:40,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 674 transitions, 8597 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:40,951 INFO L231 Difference]: Finished difference. Result has 469 places, 656 transitions, 7346 flow [2024-06-28 03:37:40,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7301, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7346, PETRI_PLACES=469, PETRI_TRANSITIONS=656} [2024-06-28 03:37:40,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 426 predicate places. [2024-06-28 03:37:40,952 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 656 transitions, 7346 flow [2024-06-28 03:37:40,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:40,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:40,952 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 03:37:40,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:37:40,953 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:40,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash -34741057, now seen corresponding path program 3 times [2024-06-28 03:37:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113172696] [2024-06-28 03:37:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:40,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:41,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113172696] [2024-06-28 03:37:41,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113172696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:41,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658058122] [2024-06-28 03:37:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:41,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:41,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:37:41,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 656 transitions, 7346 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:41,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:41,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:37:41,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:43,776 INFO L124 PetriNetUnfolderBase]: 4252/6520 cut-off events. [2024-06-28 03:37:43,776 INFO L125 PetriNetUnfolderBase]: For 2221407/2221411 co-relation queries the response was YES. [2024-06-28 03:37:43,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67880 conditions, 6520 events. 4252/6520 cut-off events. For 2221407/2221411 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36614 event pairs, 881 based on Foata normal form. 1/6506 useless extension candidates. Maximal degree in co-relation 67661. Up to 6355 conditions per place. [2024-06-28 03:37:43,903 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 633 selfloop transitions, 21 changer transitions 0/673 dead transitions. [2024-06-28 03:37:43,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 673 transitions, 8708 flow [2024-06-28 03:37:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 03:37:43,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35978835978835977 [2024-06-28 03:37:43,904 INFO L175 Difference]: Start difference. First operand has 469 places, 656 transitions, 7346 flow. Second operand 9 states and 136 transitions. [2024-06-28 03:37:43,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 673 transitions, 8708 flow [2024-06-28 03:37:51,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 673 transitions, 8624 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:51,082 INFO L231 Difference]: Finished difference. Result has 470 places, 656 transitions, 7310 flow [2024-06-28 03:37:51,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7262, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7310, PETRI_PLACES=470, PETRI_TRANSITIONS=656} [2024-06-28 03:37:51,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 427 predicate places. [2024-06-28 03:37:51,083 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 656 transitions, 7310 flow [2024-06-28 03:37:51,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:51,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:51,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:51,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:37:51,083 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:51,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash -936934179, now seen corresponding path program 1 times [2024-06-28 03:37:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:51,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027280403] [2024-06-28 03:37:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:51,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027280403] [2024-06-28 03:37:51,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027280403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:51,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562696664] [2024-06-28 03:37:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:51,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:51,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:37:51,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 656 transitions, 7310 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:51,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:51,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:37:51,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:53,729 INFO L124 PetriNetUnfolderBase]: 4262/6534 cut-off events. [2024-06-28 03:37:53,729 INFO L125 PetriNetUnfolderBase]: For 2262009/2262013 co-relation queries the response was YES. [2024-06-28 03:37:53,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68208 conditions, 6534 events. 4262/6534 cut-off events. For 2262009/2262013 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 36710 event pairs, 882 based on Foata normal form. 2/6519 useless extension candidates. Maximal degree in co-relation 67988. Up to 6366 conditions per place. [2024-06-28 03:37:53,853 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 637 selfloop transitions, 21 changer transitions 0/677 dead transitions. [2024-06-28 03:37:53,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 677 transitions, 8768 flow [2024-06-28 03:37:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 03:37:53,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2024-06-28 03:37:53,855 INFO L175 Difference]: Start difference. First operand has 470 places, 656 transitions, 7310 flow. Second operand 9 states and 137 transitions. [2024-06-28 03:37:53,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 677 transitions, 8768 flow [2024-06-28 03:38:01,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 677 transitions, 8716 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:01,824 INFO L231 Difference]: Finished difference. Result has 471 places, 659 transitions, 7396 flow [2024-06-28 03:38:01,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7258, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7396, PETRI_PLACES=471, PETRI_TRANSITIONS=659} [2024-06-28 03:38:01,824 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 428 predicate places. [2024-06-28 03:38:01,824 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 659 transitions, 7396 flow [2024-06-28 03:38:01,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:01,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:01,825 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 03:38:01,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:38:01,825 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:01,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:01,825 INFO L85 PathProgramCache]: Analyzing trace with hash 80729789, now seen corresponding path program 2 times [2024-06-28 03:38:01,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:01,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839381532] [2024-06-28 03:38:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:01,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:02,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839381532] [2024-06-28 03:38:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839381532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:02,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:02,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:02,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927111646] [2024-06-28 03:38:02,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:02,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:02,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:02,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:02,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:02,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:38:02,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 659 transitions, 7396 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:02,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:02,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:38:02,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:04,511 INFO L124 PetriNetUnfolderBase]: 4296/6585 cut-off events. [2024-06-28 03:38:04,512 INFO L125 PetriNetUnfolderBase]: For 2326597/2326601 co-relation queries the response was YES. [2024-06-28 03:38:04,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69782 conditions, 6585 events. 4296/6585 cut-off events. For 2326597/2326601 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37051 event pairs, 885 based on Foata normal form. 2/6572 useless extension candidates. Maximal degree in co-relation 69561. Up to 6298 conditions per place. [2024-06-28 03:38:04,646 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 598 selfloop transitions, 70 changer transitions 0/687 dead transitions. [2024-06-28 03:38:04,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 687 transitions, 9664 flow [2024-06-28 03:38:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:38:04,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-28 03:38:04,648 INFO L175 Difference]: Start difference. First operand has 471 places, 659 transitions, 7396 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:38:04,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 687 transitions, 9664 flow [2024-06-28 03:38:12,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 687 transitions, 9548 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:12,620 INFO L231 Difference]: Finished difference. Result has 473 places, 668 transitions, 7702 flow [2024-06-28 03:38:12,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7280, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7702, PETRI_PLACES=473, PETRI_TRANSITIONS=668} [2024-06-28 03:38:12,621 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 430 predicate places. [2024-06-28 03:38:12,621 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 668 transitions, 7702 flow [2024-06-28 03:38:12,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:12,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:12,621 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 03:38:12,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:38:12,621 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:12,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash 80723279, now seen corresponding path program 3 times [2024-06-28 03:38:12,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:12,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89264030] [2024-06-28 03:38:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:12,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89264030] [2024-06-28 03:38:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89264030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:13,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152115965] [2024-06-28 03:38:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:13,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:13,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:38:13,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 668 transitions, 7702 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:13,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:13,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:38:13,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:15,679 INFO L124 PetriNetUnfolderBase]: 4311/6606 cut-off events. [2024-06-28 03:38:15,679 INFO L125 PetriNetUnfolderBase]: For 2360185/2360189 co-relation queries the response was YES. [2024-06-28 03:38:15,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70472 conditions, 6606 events. 4311/6606 cut-off events. For 2360185/2360189 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37188 event pairs, 885 based on Foata normal form. 2/6593 useless extension candidates. Maximal degree in co-relation 70250. Up to 6310 conditions per place. [2024-06-28 03:38:15,790 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 600 selfloop transitions, 72 changer transitions 0/691 dead transitions. [2024-06-28 03:38:15,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 691 transitions, 9812 flow [2024-06-28 03:38:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:38:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:38:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 03:38:15,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-06-28 03:38:15,791 INFO L175 Difference]: Start difference. First operand has 473 places, 668 transitions, 7702 flow. Second operand 10 states and 159 transitions. [2024-06-28 03:38:15,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 691 transitions, 9812 flow [2024-06-28 03:38:22,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 691 transitions, 9643 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:22,877 INFO L231 Difference]: Finished difference. Result has 479 places, 671 transitions, 7779 flow [2024-06-28 03:38:22,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7555, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7779, PETRI_PLACES=479, PETRI_TRANSITIONS=671} [2024-06-28 03:38:22,878 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 436 predicate places. [2024-06-28 03:38:22,878 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 671 transitions, 7779 flow [2024-06-28 03:38:22,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:22,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:22,878 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 03:38:22,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:38:22,878 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:22,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:22,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1932917399, now seen corresponding path program 4 times [2024-06-28 03:38:22,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:22,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647447543] [2024-06-28 03:38:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:22,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:23,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:23,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647447543] [2024-06-28 03:38:23,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647447543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:23,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:23,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538047334] [2024-06-28 03:38:23,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:23,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:23,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:38:23,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 671 transitions, 7779 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:23,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:23,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:38:23,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:25,736 INFO L124 PetriNetUnfolderBase]: 4333/6638 cut-off events. [2024-06-28 03:38:25,736 INFO L125 PetriNetUnfolderBase]: For 2390548/2390552 co-relation queries the response was YES. [2024-06-28 03:38:25,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71184 conditions, 6638 events. 4333/6638 cut-off events. For 2390548/2390552 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37388 event pairs, 890 based on Foata normal form. 1/6624 useless extension candidates. Maximal degree in co-relation 70960. Up to 6427 conditions per place. [2024-06-28 03:38:25,883 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 615 selfloop transitions, 54 changer transitions 0/688 dead transitions. [2024-06-28 03:38:25,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 688 transitions, 9235 flow [2024-06-28 03:38:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 03:38:25,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 03:38:25,888 INFO L175 Difference]: Start difference. First operand has 479 places, 671 transitions, 7779 flow. Second operand 9 states and 140 transitions. [2024-06-28 03:38:25,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 688 transitions, 9235 flow [2024-06-28 03:38:34,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 688 transitions, 9081 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:34,455 INFO L231 Difference]: Finished difference. Result has 482 places, 674 transitions, 7821 flow [2024-06-28 03:38:34,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7625, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7821, PETRI_PLACES=482, PETRI_TRANSITIONS=674} [2024-06-28 03:38:34,456 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 439 predicate places. [2024-06-28 03:38:34,456 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 674 transitions, 7821 flow [2024-06-28 03:38:34,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:34,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:34,456 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 03:38:34,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:38:34,456 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:34,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:34,457 INFO L85 PathProgramCache]: Analyzing trace with hash 80550113, now seen corresponding path program 5 times [2024-06-28 03:38:34,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:34,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177419531] [2024-06-28 03:38:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:35,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:35,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177419531] [2024-06-28 03:38:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177419531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:35,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:35,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46531443] [2024-06-28 03:38:35,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:35,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:35,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:35,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:35,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:38:35,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 674 transitions, 7821 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:35,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:35,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:38:35,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:37,558 INFO L124 PetriNetUnfolderBase]: 4316/6615 cut-off events. [2024-06-28 03:38:37,559 INFO L125 PetriNetUnfolderBase]: For 2405221/2405225 co-relation queries the response was YES. [2024-06-28 03:38:37,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71175 conditions, 6615 events. 4316/6615 cut-off events. For 2405221/2405225 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 37268 event pairs, 886 based on Foata normal form. 1/6601 useless extension candidates. Maximal degree in co-relation 70950. Up to 6402 conditions per place. [2024-06-28 03:38:37,689 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 619 selfloop transitions, 53 changer transitions 0/691 dead transitions. [2024-06-28 03:38:37,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 691 transitions, 9289 flow [2024-06-28 03:38:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 03:38:37,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 03:38:37,690 INFO L175 Difference]: Start difference. First operand has 482 places, 674 transitions, 7821 flow. Second operand 9 states and 141 transitions. [2024-06-28 03:38:37,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 691 transitions, 9289 flow [2024-06-28 03:38:46,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 691 transitions, 9115 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:46,484 INFO L231 Difference]: Finished difference. Result has 484 places, 677 transitions, 7847 flow [2024-06-28 03:38:46,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7647, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7847, PETRI_PLACES=484, PETRI_TRANSITIONS=677} [2024-06-28 03:38:46,484 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 441 predicate places. [2024-06-28 03:38:46,484 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 677 transitions, 7847 flow [2024-06-28 03:38:46,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:46,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:46,485 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 03:38:46,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:38:46,485 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:46,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 80550299, now seen corresponding path program 4 times [2024-06-28 03:38:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652371357] [2024-06-28 03:38:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:47,349 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 03:38:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652371357] [2024-06-28 03:38:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652371357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:47,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:47,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803922323] [2024-06-28 03:38:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:47,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:38:47,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 677 transitions, 7847 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:47,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:47,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:38:47,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:49,203 INFO L124 PetriNetUnfolderBase]: 4310/6607 cut-off events. [2024-06-28 03:38:49,204 INFO L125 PetriNetUnfolderBase]: For 2421991/2421995 co-relation queries the response was YES. [2024-06-28 03:38:49,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71309 conditions, 6607 events. 4310/6607 cut-off events. For 2421991/2421995 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 37224 event pairs, 884 based on Foata normal form. 2/6594 useless extension candidates. Maximal degree in co-relation 71083. Up to 6317 conditions per place. [2024-06-28 03:38:49,330 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 607 selfloop transitions, 70 changer transitions 0/696 dead transitions. [2024-06-28 03:38:49,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 696 transitions, 9571 flow [2024-06-28 03:38:49,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:38:49,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 03:38:49,332 INFO L175 Difference]: Start difference. First operand has 484 places, 677 transitions, 7847 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:38:49,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 696 transitions, 9571 flow [2024-06-28 03:38:57,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 696 transitions, 9341 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:57,654 INFO L231 Difference]: Finished difference. Result has 486 places, 677 transitions, 7763 flow [2024-06-28 03:38:57,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7617, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7763, PETRI_PLACES=486, PETRI_TRANSITIONS=677} [2024-06-28 03:38:57,654 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 443 predicate places. [2024-06-28 03:38:57,654 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 677 transitions, 7763 flow [2024-06-28 03:38:57,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:57,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:57,655 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 03:38:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:38:57,655 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:57,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash 80545463, now seen corresponding path program 6 times [2024-06-28 03:38:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187643963] [2024-06-28 03:38:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:58,672 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 03:38:58,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:58,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187643963] [2024-06-28 03:38:58,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187643963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:58,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:58,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:58,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24004467] [2024-06-28 03:38:58,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:58,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:58,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:58,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:58,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:58,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:38:58,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 677 transitions, 7763 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:58,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:58,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:38:58,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:00,562 INFO L124 PetriNetUnfolderBase]: 4315/6614 cut-off events. [2024-06-28 03:39:00,563 INFO L125 PetriNetUnfolderBase]: For 2439654/2439658 co-relation queries the response was YES. [2024-06-28 03:39:00,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71504 conditions, 6614 events. 4315/6614 cut-off events. For 2439654/2439658 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37279 event pairs, 885 based on Foata normal form. 1/6600 useless extension candidates. Maximal degree in co-relation 71277. Up to 6392 conditions per place. [2024-06-28 03:39:00,688 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 614 selfloop transitions, 61 changer transitions 0/694 dead transitions. [2024-06-28 03:39:00,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 694 transitions, 9243 flow [2024-06-28 03:39:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 03:39:00,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 03:39:00,689 INFO L175 Difference]: Start difference. First operand has 486 places, 677 transitions, 7763 flow. Second operand 9 states and 142 transitions. [2024-06-28 03:39:00,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 694 transitions, 9243 flow [2024-06-28 03:39:10,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 694 transitions, 9063 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:10,217 INFO L231 Difference]: Finished difference. Result has 486 places, 680 transitions, 7805 flow [2024-06-28 03:39:10,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7583, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7805, PETRI_PLACES=486, PETRI_TRANSITIONS=680} [2024-06-28 03:39:10,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 443 predicate places. [2024-06-28 03:39:10,218 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 680 transitions, 7805 flow [2024-06-28 03:39:10,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:10,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:10,218 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 03:39:10,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:39:10,219 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:10,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 80545339, now seen corresponding path program 4 times [2024-06-28 03:39:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052972009] [2024-06-28 03:39:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:11,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052972009] [2024-06-28 03:39:11,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052972009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:11,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:11,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755846268] [2024-06-28 03:39:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:11,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:11,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:11,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:39:11,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 680 transitions, 7805 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:11,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:11,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:39:11,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:13,201 INFO L124 PetriNetUnfolderBase]: 4214/6507 cut-off events. [2024-06-28 03:39:13,201 INFO L125 PetriNetUnfolderBase]: For 2488197/2488211 co-relation queries the response was YES. [2024-06-28 03:39:13,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71711 conditions, 6507 events. 4214/6507 cut-off events. For 2488197/2488211 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 37095 event pairs, 850 based on Foata normal form. 2/6484 useless extension candidates. Maximal degree in co-relation 71483. Up to 6165 conditions per place. [2024-06-28 03:39:13,331 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 608 selfloop transitions, 32 changer transitions 0/697 dead transitions. [2024-06-28 03:39:13,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 697 transitions, 9211 flow [2024-06-28 03:39:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 03:39:13,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2024-06-28 03:39:13,332 INFO L175 Difference]: Start difference. First operand has 486 places, 680 transitions, 7805 flow. Second operand 9 states and 145 transitions. [2024-06-28 03:39:13,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 697 transitions, 9211 flow [2024-06-28 03:39:22,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 697 transitions, 9011 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:22,642 INFO L231 Difference]: Finished difference. Result has 488 places, 682 transitions, 7760 flow [2024-06-28 03:39:22,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7605, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7760, PETRI_PLACES=488, PETRI_TRANSITIONS=682} [2024-06-28 03:39:22,643 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 445 predicate places. [2024-06-28 03:39:22,643 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 682 transitions, 7760 flow [2024-06-28 03:39:22,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:22,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:22,644 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 03:39:22,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:39:22,644 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:22,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:22,644 INFO L85 PathProgramCache]: Analyzing trace with hash 187801923, now seen corresponding path program 7 times [2024-06-28 03:39:22,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:22,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352249735] [2024-06-28 03:39:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:22,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:23,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:23,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352249735] [2024-06-28 03:39:23,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352249735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:23,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:23,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:23,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113289130] [2024-06-28 03:39:23,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:23,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:23,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:23,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:23,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:39:23,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 682 transitions, 7760 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:23,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:23,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:39:23,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:25,484 INFO L124 PetriNetUnfolderBase]: 4328/6633 cut-off events. [2024-06-28 03:39:25,484 INFO L125 PetriNetUnfolderBase]: For 2499695/2499699 co-relation queries the response was YES. [2024-06-28 03:39:25,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72514 conditions, 6633 events. 4328/6633 cut-off events. For 2499695/2499699 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 37394 event pairs, 883 based on Foata normal form. 1/6619 useless extension candidates. Maximal degree in co-relation 72285. Up to 6474 conditions per place. [2024-06-28 03:39:25,615 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 656 selfloop transitions, 21 changer transitions 0/696 dead transitions. [2024-06-28 03:39:25,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 696 transitions, 9240 flow [2024-06-28 03:39:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 03:39:25,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2024-06-28 03:39:25,616 INFO L175 Difference]: Start difference. First operand has 488 places, 682 transitions, 7760 flow. Second operand 9 states and 130 transitions. [2024-06-28 03:39:25,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 696 transitions, 9240 flow [2024-06-28 03:39:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 696 transitions, 9101 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:35,896 INFO L231 Difference]: Finished difference. Result has 490 places, 685 transitions, 7771 flow [2024-06-28 03:39:35,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7771, PETRI_PLACES=490, PETRI_TRANSITIONS=685} [2024-06-28 03:39:35,897 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 447 predicate places. [2024-06-28 03:39:35,897 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 685 transitions, 7771 flow [2024-06-28 03:39:35,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:35,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:35,897 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 03:39:35,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:39:35,897 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:35,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:35,898 INFO L85 PathProgramCache]: Analyzing trace with hash 585517615, now seen corresponding path program 5 times [2024-06-28 03:39:35,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:35,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257832791] [2024-06-28 03:39:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:35,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:36,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257832791] [2024-06-28 03:39:36,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257832791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:36,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:36,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378782369] [2024-06-28 03:39:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:36,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:39:36,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 685 transitions, 7771 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:36,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:36,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:39:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:38,710 INFO L124 PetriNetUnfolderBase]: 4354/6671 cut-off events. [2024-06-28 03:39:38,711 INFO L125 PetriNetUnfolderBase]: For 2569574/2569578 co-relation queries the response was YES. [2024-06-28 03:39:38,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73739 conditions, 6671 events. 4354/6671 cut-off events. For 2569574/2569578 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 37625 event pairs, 883 based on Foata normal form. 2/6658 useless extension candidates. Maximal degree in co-relation 73509. Up to 6475 conditions per place. [2024-06-28 03:39:38,844 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 654 selfloop transitions, 33 changer transitions 0/706 dead transitions. [2024-06-28 03:39:38,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 706 transitions, 9701 flow [2024-06-28 03:39:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 03:39:38,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2024-06-28 03:39:38,845 INFO L175 Difference]: Start difference. First operand has 490 places, 685 transitions, 7771 flow. Second operand 9 states and 137 transitions. [2024-06-28 03:39:38,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 706 transitions, 9701 flow Killed by 15