./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.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/mix033_power.oepc_pso.oepc_rmo.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/mix033_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_power.oepc_pso.oepc_rmo.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 03:16:34,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:16:34,942 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:16:34,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:16:34,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:16:34,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:16:34,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:16:34,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:16:34,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:16:34,974 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:16:34,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:16:34,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:16:34,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:16:34,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:16:34,976 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:16:34,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:16:34,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:16:34,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:16:34,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:16:34,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:16:34,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:16:34,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:16:34,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:16:34,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:16:34,979 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:16:34,979 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:16:34,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:16:34,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:16:34,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:16:34,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:16:34,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:16:34,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:16:34,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:16:34,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:16:34,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:16:34,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:16:34,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:16:35,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:16:35,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:16:35,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:16:35,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:16:35,214 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:16:35,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:16:36,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:16:36,442 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:16:36,442 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:16:36,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2dbc092f/2290e1c82afb4bbd8df5928e00b6809f/FLAGc89edb661 [2024-06-28 03:16:36,479 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2dbc092f/2290e1c82afb4bbd8df5928e00b6809f [2024-06-28 03:16:36,481 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:16:36,482 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:16:36,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:16:36,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:16:36,650 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:16:36,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:16:36,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:16:36,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:16:36,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:16:36" (1/2) ... [2024-06-28 03:16:36,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2294adde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:36, skipping insertion in model container [2024-06-28 03:16:36,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:16:36" (1/2) ... [2024-06-28 03:16:36,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a20b03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:36, skipping insertion in model container [2024-06-28 03:16:36,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:36" (2/2) ... [2024-06-28 03:16:36,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2294adde and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:36, skipping insertion in model container [2024-06-28 03:16:36,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:36" (2/2) ... [2024-06-28 03:16:36,659 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:16:36,750 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:16:36,751 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || b$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1)) [2024-06-28 03:16:36,751 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || b$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1)) [2024-06-28 03:16:36,751 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || b$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1)) [2024-06-28 03:16:36,752 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:16:36,752 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 03:16:36,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:16:37,135 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:16:37,142 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:16:37,308 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:16:37,339 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:16:37,339 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37 WrapperNode [2024-06-28 03:16:37,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:16:37,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:16:37,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:16:37,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:16:37,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,385 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 129 [2024-06-28 03:16:37,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:16:37,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:16:37,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:16:37,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:16:37,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,420 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 03:16:37,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:16:37,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:16:37,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:16:37,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:16:37,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (1/1) ... [2024-06-28 03:16:37,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:16:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:16:37,521 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 03:16:37,587 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 03:16:37,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:16:37,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:16:37,603 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:16:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:16:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:16:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:16:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:16:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:16:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:16:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:16:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:16:37,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:16:37,606 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 03:16:37,709 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:16:37,711 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:16:37,990 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:16:37,990 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:16:38,098 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:16:38,099 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:16:38,099 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:16:38 BoogieIcfgContainer [2024-06-28 03:16:38,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:16:38,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:16:38,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:16:38,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:16:38,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:16:36" (1/4) ... [2024-06-28 03:16:38,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6932fce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:16:38, skipping insertion in model container [2024-06-28 03:16:38,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:36" (2/4) ... [2024-06-28 03:16:38,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6932fce1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:16:38, skipping insertion in model container [2024-06-28 03:16:38,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:37" (3/4) ... [2024-06-28 03:16:38,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6932fce1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:16:38, skipping insertion in model container [2024-06-28 03:16:38,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:16:38" (4/4) ... [2024-06-28 03:16:38,107 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:16:38,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:16:38,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:16:38,119 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:16:38,161 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:16:38,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:16:38,221 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-28 03:16:38,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:16:38,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:16:38,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:16:38,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-28 03:16:38,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:16:38,289 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;@65be6fdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:16:38,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:16:38,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:16:38,294 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:16:38,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:16:38,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:38,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:16:38,295 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 03:16:38,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:38,299 INFO L85 PathProgramCache]: Analyzing trace with hash 386398261, now seen corresponding path program 1 times [2024-06-28 03:16:38,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013090956] [2024-06-28 03:16:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:39,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:39,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013090956] [2024-06-28 03:16:39,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013090956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:39,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:39,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:16:39,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282888455] [2024-06-28 03:16:39,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:39,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:16:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:16:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:16:39,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:39,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:39,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:39,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:39,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:39,816 INFO L124 PetriNetUnfolderBase]: 1911/2945 cut-off events. [2024-06-28 03:16:39,817 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 03:16:39,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 2945 events. 1911/2945 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14834 event pairs, 1379 based on Foata normal form. 1/2857 useless extension candidates. Maximal degree in co-relation 5857. Up to 2825 conditions per place. [2024-06-28 03:16:39,838 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 03:16:39,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 181 flow [2024-06-28 03:16:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:16:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:16:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-28 03:16:39,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-28 03:16:39,849 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 80 transitions. [2024-06-28 03:16:39,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 181 flow [2024-06-28 03:16:39,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:39,856 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-28 03:16:39,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:16:39,860 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-28 03:16:39,860 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-28 03:16:39,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:39,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:39,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:39,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:16:39,862 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 03:16:39,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1962653832, now seen corresponding path program 1 times [2024-06-28 03:16:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:39,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315682294] [2024-06-28 03:16:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:40,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:40,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315682294] [2024-06-28 03:16:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315682294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:40,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:40,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:16:40,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936650629] [2024-06-28 03:16:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:16:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:16:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:16:40,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:40,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:40,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:40,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:40,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:40,794 INFO L124 PetriNetUnfolderBase]: 1905/2936 cut-off events. [2024-06-28 03:16:40,794 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2024-06-28 03:16:40,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 2936 events. 1905/2936 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14810 event pairs, 1212 based on Foata normal form. 3/2890 useless extension candidates. Maximal degree in co-relation 6545. Up to 2801 conditions per place. [2024-06-28 03:16:40,807 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 41 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-28 03:16:40,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 248 flow [2024-06-28 03:16:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:16:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:16:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-28 03:16:40,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2024-06-28 03:16:40,809 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 103 transitions. [2024-06-28 03:16:40,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 248 flow [2024-06-28 03:16:40,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:16:40,811 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-28 03:16:40,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 03:16:40,812 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-28 03:16:40,812 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-28 03:16:40,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:40,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:40,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:40,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:16:40,813 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 03:16:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:40,814 INFO L85 PathProgramCache]: Analyzing trace with hash 712727238, now seen corresponding path program 1 times [2024-06-28 03:16:40,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:40,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810684047] [2024-06-28 03:16:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:41,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:41,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810684047] [2024-06-28 03:16:41,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810684047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:41,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:41,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:16:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288603416] [2024-06-28 03:16:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:41,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:16:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:16:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:16:41,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:41,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:41,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:41,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:41,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:41,892 INFO L124 PetriNetUnfolderBase]: 1913/2962 cut-off events. [2024-06-28 03:16:41,892 INFO L125 PetriNetUnfolderBase]: For 1563/1563 co-relation queries the response was YES. [2024-06-28 03:16:41,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7292 conditions, 2962 events. 1913/2962 cut-off events. For 1563/1563 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15055 event pairs, 951 based on Foata normal form. 5/2925 useless extension candidates. Maximal degree in co-relation 7278. Up to 2747 conditions per place. [2024-06-28 03:16:41,905 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 54 selfloop transitions, 16 changer transitions 0/77 dead transitions. [2024-06-28 03:16:41,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 402 flow [2024-06-28 03:16:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:16:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:16:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-28 03:16:41,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2024-06-28 03:16:41,907 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 5 states and 134 transitions. [2024-06-28 03:16:41,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 402 flow [2024-06-28 03:16:41,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 388 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:16:41,910 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 241 flow [2024-06-28 03:16:41,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-06-28 03:16:41,910 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-06-28 03:16:41,910 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 241 flow [2024-06-28 03:16:41,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:41,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:41,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:41,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:16:41,911 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 03:16:41,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -433105421, now seen corresponding path program 1 times [2024-06-28 03:16:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:41,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742810845] [2024-06-28 03:16:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:41,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:42,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742810845] [2024-06-28 03:16:42,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742810845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416499425] [2024-06-28 03:16:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:42,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:43,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:43,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 03:16:43,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:43,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:43,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:43,370 INFO L124 PetriNetUnfolderBase]: 1921/2974 cut-off events. [2024-06-28 03:16:43,370 INFO L125 PetriNetUnfolderBase]: For 3601/3603 co-relation queries the response was YES. [2024-06-28 03:16:43,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8537 conditions, 2974 events. 1921/2974 cut-off events. For 3601/3603 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15086 event pairs, 784 based on Foata normal form. 7/2939 useless extension candidates. Maximal degree in co-relation 8520. Up to 2733 conditions per place. [2024-06-28 03:16:43,384 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 61 selfloop transitions, 20 changer transitions 0/88 dead transitions. [2024-06-28 03:16:43,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 529 flow [2024-06-28 03:16:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 03:16:43,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2024-06-28 03:16:43,386 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 241 flow. Second operand 6 states and 158 transitions. [2024-06-28 03:16:43,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 529 flow [2024-06-28 03:16:43,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 521 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 03:16:43,389 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 314 flow [2024-06-28 03:16:43,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-06-28 03:16:43,390 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-28 03:16:43,390 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 314 flow [2024-06-28 03:16:43,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 03:16:43,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:43,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:43,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:16:43,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:43,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2031095557, now seen corresponding path program 1 times [2024-06-28 03:16:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:43,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986819105] [2024-06-28 03:16:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986819105] [2024-06-28 03:16:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986819105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:44,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:44,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:44,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291680346] [2024-06-28 03:16:44,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:44,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:44,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:44,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:44,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:44,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:44,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:44,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:44,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:44,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:45,006 INFO L124 PetriNetUnfolderBase]: 1933/2994 cut-off events. [2024-06-28 03:16:45,007 INFO L125 PetriNetUnfolderBase]: For 5677/5679 co-relation queries the response was YES. [2024-06-28 03:16:45,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9498 conditions, 2994 events. 1933/2994 cut-off events. For 5677/5679 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15232 event pairs, 596 based on Foata normal form. 12/2964 useless extension candidates. Maximal degree in co-relation 9478. Up to 2701 conditions per place. [2024-06-28 03:16:45,026 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 65 selfloop transitions, 23 changer transitions 0/95 dead transitions. [2024-06-28 03:16:45,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 630 flow [2024-06-28 03:16:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 03:16:45,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577922077922078 [2024-06-28 03:16:45,028 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 314 flow. Second operand 7 states and 178 transitions. [2024-06-28 03:16:45,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 630 flow [2024-06-28 03:16:45,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 581 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:45,036 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 341 flow [2024-06-28 03:16:45,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-28 03:16:45,038 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-06-28 03:16:45,038 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 341 flow [2024-06-28 03:16:45,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:45,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:45,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:45,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:16:45,043 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 03:16:45,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash -631748548, now seen corresponding path program 1 times [2024-06-28 03:16:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403022027] [2024-06-28 03:16:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:45,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403022027] [2024-06-28 03:16:45,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403022027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:45,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:45,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:45,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33931058] [2024-06-28 03:16:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:45,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:45,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:45,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:45,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:45,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:45,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:45,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:46,148 INFO L124 PetriNetUnfolderBase]: 1928/2981 cut-off events. [2024-06-28 03:16:46,149 INFO L125 PetriNetUnfolderBase]: For 7782/7782 co-relation queries the response was YES. [2024-06-28 03:16:46,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10091 conditions, 2981 events. 1928/2981 cut-off events. For 7782/7782 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15122 event pairs, 776 based on Foata normal form. 2/2939 useless extension candidates. Maximal degree in co-relation 10069. Up to 2844 conditions per place. [2024-06-28 03:16:46,170 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 55 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2024-06-28 03:16:46,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 495 flow [2024-06-28 03:16:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:16:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:16:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-28 03:16:46,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-28 03:16:46,171 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 341 flow. Second operand 5 states and 102 transitions. [2024-06-28 03:16:46,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 495 flow [2024-06-28 03:16:46,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 431 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:46,177 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 301 flow [2024-06-28 03:16:46,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-28 03:16:46,179 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-06-28 03:16:46,179 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 301 flow [2024-06-28 03:16:46,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:46,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:46,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:46,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:16:46,180 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 03:16:46,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1860159738, now seen corresponding path program 1 times [2024-06-28 03:16:46,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:46,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184338982] [2024-06-28 03:16:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:46,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184338982] [2024-06-28 03:16:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184338982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:46,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300399027] [2024-06-28 03:16:46,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:46,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:46,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:46,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:46,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:46,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:46,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:46,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:46,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:47,427 INFO L124 PetriNetUnfolderBase]: 2264/3484 cut-off events. [2024-06-28 03:16:47,428 INFO L125 PetriNetUnfolderBase]: For 10324/10324 co-relation queries the response was YES. [2024-06-28 03:16:47,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11653 conditions, 3484 events. 2264/3484 cut-off events. For 10324/10324 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17571 event pairs, 936 based on Foata normal form. 2/3477 useless extension candidates. Maximal degree in co-relation 11629. Up to 3319 conditions per place. [2024-06-28 03:16:47,440 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 60 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-28 03:16:47,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 501 flow [2024-06-28 03:16:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 03:16:47,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-28 03:16:47,442 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 301 flow. Second operand 6 states and 115 transitions. [2024-06-28 03:16:47,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 501 flow [2024-06-28 03:16:47,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 479 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:47,446 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 335 flow [2024-06-28 03:16:47,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-06-28 03:16:47,448 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-06-28 03:16:47,448 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 335 flow [2024-06-28 03:16:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:47,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:47,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:47,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:16:47,449 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 03:16:47,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1781883887, now seen corresponding path program 1 times [2024-06-28 03:16:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:47,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422823035] [2024-06-28 03:16:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:48,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:48,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422823035] [2024-06-28 03:16:48,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422823035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:48,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:48,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249415255] [2024-06-28 03:16:48,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:48,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:48,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:48,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:48,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:16:48,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:48,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:48,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:48,710 INFO L124 PetriNetUnfolderBase]: 2136/3356 cut-off events. [2024-06-28 03:16:48,710 INFO L125 PetriNetUnfolderBase]: For 13134/13138 co-relation queries the response was YES. [2024-06-28 03:16:48,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11963 conditions, 3356 events. 2136/3356 cut-off events. For 13134/13138 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17417 event pairs, 853 based on Foata normal form. 8/3353 useless extension candidates. Maximal degree in co-relation 11939. Up to 3068 conditions per place. [2024-06-28 03:16:48,723 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 58 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-28 03:16:48,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 589 flow [2024-06-28 03:16:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 03:16:48,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-28 03:16:48,728 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 335 flow. Second operand 6 states and 129 transitions. [2024-06-28 03:16:48,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 589 flow [2024-06-28 03:16:48,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 557 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:48,734 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 375 flow [2024-06-28 03:16:48,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-28 03:16:48,735 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-06-28 03:16:48,735 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 375 flow [2024-06-28 03:16:48,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:16:48,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:48,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:16:48,736 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 03:16:48,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1751260847, now seen corresponding path program 2 times [2024-06-28 03:16:48,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543105454] [2024-06-28 03:16:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:49,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:49,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543105454] [2024-06-28 03:16:49,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543105454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:49,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:49,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:49,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631789158] [2024-06-28 03:16:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:49,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:49,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:49,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:49,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 375 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:16:49,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:49,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:49,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:49,978 INFO L124 PetriNetUnfolderBase]: 2121/3330 cut-off events. [2024-06-28 03:16:49,978 INFO L125 PetriNetUnfolderBase]: For 15350/15350 co-relation queries the response was YES. [2024-06-28 03:16:49,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12238 conditions, 3330 events. 2121/3330 cut-off events. For 15350/15350 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17281 event pairs, 849 based on Foata normal form. 2/3321 useless extension candidates. Maximal degree in co-relation 12213. Up to 3109 conditions per place. [2024-06-28 03:16:49,993 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 61 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-06-28 03:16:49,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 557 flow [2024-06-28 03:16:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 03:16:49,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:16:49,994 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 375 flow. Second operand 6 states and 120 transitions. [2024-06-28 03:16:49,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 557 flow [2024-06-28 03:16:49,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 528 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:50,002 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 376 flow [2024-06-28 03:16:50,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 03:16:50,003 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-06-28 03:16:50,003 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 376 flow [2024-06-28 03:16:50,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:16:50,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:50,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:50,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:16:50,004 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 03:16:50,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1830378617, now seen corresponding path program 1 times [2024-06-28 03:16:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:50,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191089800] [2024-06-28 03:16:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:50,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191089800] [2024-06-28 03:16:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191089800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:50,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:50,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612876694] [2024-06-28 03:16:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:50,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:50,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:50,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:50,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:50,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:50,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:50,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:51,636 INFO L124 PetriNetUnfolderBase]: 2245/3433 cut-off events. [2024-06-28 03:16:51,636 INFO L125 PetriNetUnfolderBase]: For 17996/17996 co-relation queries the response was YES. [2024-06-28 03:16:51,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12876 conditions, 3433 events. 2245/3433 cut-off events. For 17996/17996 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17138 event pairs, 888 based on Foata normal form. 4/3424 useless extension candidates. Maximal degree in co-relation 12850. Up to 3271 conditions per place. [2024-06-28 03:16:51,652 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 68 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-28 03:16:51,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 614 flow [2024-06-28 03:16:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:16:51,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:16:51,654 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 376 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:16:51,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 614 flow [2024-06-28 03:16:51,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 567 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:51,662 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 395 flow [2024-06-28 03:16:51,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-06-28 03:16:51,663 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-06-28 03:16:51,665 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 395 flow [2024-06-28 03:16:51,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:51,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:51,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:51,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:16:51,666 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 03:16:51,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash 900488729, now seen corresponding path program 1 times [2024-06-28 03:16:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760693097] [2024-06-28 03:16:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:52,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:52,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760693097] [2024-06-28 03:16:52,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760693097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:52,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:52,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:52,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228358000] [2024-06-28 03:16:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:52,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:52,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:52,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 395 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:52,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:52,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:52,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:53,116 INFO L124 PetriNetUnfolderBase]: 2267/3500 cut-off events. [2024-06-28 03:16:53,116 INFO L125 PetriNetUnfolderBase]: For 21426/21430 co-relation queries the response was YES. [2024-06-28 03:16:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13713 conditions, 3500 events. 2267/3500 cut-off events. For 21426/21430 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17741 event pairs, 872 based on Foata normal form. 5/3490 useless extension candidates. Maximal degree in co-relation 13686. Up to 3193 conditions per place. [2024-06-28 03:16:53,134 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 68 selfloop transitions, 26 changer transitions 0/99 dead transitions. [2024-06-28 03:16:53,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 743 flow [2024-06-28 03:16:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 03:16:53,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-28 03:16:53,136 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 395 flow. Second operand 7 states and 144 transitions. [2024-06-28 03:16:53,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 743 flow [2024-06-28 03:16:53,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 99 transitions, 701 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:53,151 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 476 flow [2024-06-28 03:16:53,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-06-28 03:16:53,152 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2024-06-28 03:16:53,152 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 476 flow [2024-06-28 03:16:53,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:53,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:53,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:16:53,153 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 03:16:53,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash 127234807, now seen corresponding path program 2 times [2024-06-28 03:16:53,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:53,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513642996] [2024-06-28 03:16:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:53,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513642996] [2024-06-28 03:16:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513642996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:53,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:53,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67295949] [2024-06-28 03:16:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:53,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:54,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:54,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 476 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:54,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:54,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:54,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:54,564 INFO L124 PetriNetUnfolderBase]: 2278/3515 cut-off events. [2024-06-28 03:16:54,565 INFO L125 PetriNetUnfolderBase]: For 25786/25786 co-relation queries the response was YES. [2024-06-28 03:16:54,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14680 conditions, 3515 events. 2278/3515 cut-off events. For 25786/25786 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17785 event pairs, 864 based on Foata normal form. 2/3502 useless extension candidates. Maximal degree in co-relation 14652. Up to 3328 conditions per place. [2024-06-28 03:16:54,580 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 77 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-28 03:16:54,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 738 flow [2024-06-28 03:16:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:16:54,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:16:54,581 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 476 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:16:54,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 738 flow [2024-06-28 03:16:54,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 700 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:54,593 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 512 flow [2024-06-28 03:16:54,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=512, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-28 03:16:54,593 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2024-06-28 03:16:54,594 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 512 flow [2024-06-28 03:16:54,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:54,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:54,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:16:54,594 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 03:16:54,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 906917819, now seen corresponding path program 3 times [2024-06-28 03:16:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727198079] [2024-06-28 03:16:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:54,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727198079] [2024-06-28 03:16:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727198079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188460023] [2024-06-28 03:16:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:55,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:55,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:55,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 512 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:55,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:55,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:55,883 INFO L124 PetriNetUnfolderBase]: 2273/3508 cut-off events. [2024-06-28 03:16:55,883 INFO L125 PetriNetUnfolderBase]: For 29902/29902 co-relation queries the response was YES. [2024-06-28 03:16:55,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15114 conditions, 3508 events. 2273/3508 cut-off events. For 29902/29902 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17715 event pairs, 864 based on Foata normal form. 2/3495 useless extension candidates. Maximal degree in co-relation 15084. Up to 3303 conditions per place. [2024-06-28 03:16:55,902 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 75 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2024-06-28 03:16:55,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 786 flow [2024-06-28 03:16:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:16:55,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-28 03:16:55,904 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 512 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:16:55,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 786 flow [2024-06-28 03:16:55,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 740 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:55,921 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 556 flow [2024-06-28 03:16:55,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-06-28 03:16:55,922 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-06-28 03:16:55,922 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 556 flow [2024-06-28 03:16:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:55,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:55,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:55,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:16:55,924 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:55,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash -108138202, now seen corresponding path program 1 times [2024-06-28 03:16:55,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:55,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257442784] [2024-06-28 03:16:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257442784] [2024-06-28 03:16:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257442784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806094557] [2024-06-28 03:16:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:56,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:56,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:56,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:56,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:56,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:56,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:56,931 INFO L124 PetriNetUnfolderBase]: 2486/3849 cut-off events. [2024-06-28 03:16:56,946 INFO L125 PetriNetUnfolderBase]: For 38890/38890 co-relation queries the response was YES. [2024-06-28 03:16:57,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17016 conditions, 3849 events. 2486/3849 cut-off events. For 38890/38890 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19505 event pairs, 990 based on Foata normal form. 1/3849 useless extension candidates. Maximal degree in co-relation 16985. Up to 3628 conditions per place. [2024-06-28 03:16:57,043 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 73 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-06-28 03:16:57,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 762 flow [2024-06-28 03:16:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:16:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:16:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 03:16:57,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-28 03:16:57,054 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 556 flow. Second operand 5 states and 94 transitions. [2024-06-28 03:16:57,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 762 flow [2024-06-28 03:16:57,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 700 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:57,072 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 546 flow [2024-06-28 03:16:57,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-28 03:16:57,073 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-06-28 03:16:57,073 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 546 flow [2024-06-28 03:16:57,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:57,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:57,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:57,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:16:57,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:57,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1144725144, now seen corresponding path program 1 times [2024-06-28 03:16:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440465850] [2024-06-28 03:16:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:58,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440465850] [2024-06-28 03:16:58,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440465850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:58,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:58,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840362214] [2024-06-28 03:16:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:58,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:58,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:58,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 546 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:58,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:58,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:58,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:58,728 INFO L124 PetriNetUnfolderBase]: 2147/3373 cut-off events. [2024-06-28 03:16:58,729 INFO L125 PetriNetUnfolderBase]: For 37969/37971 co-relation queries the response was YES. [2024-06-28 03:16:58,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15562 conditions, 3373 events. 2147/3373 cut-off events. For 37969/37971 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17500 event pairs, 796 based on Foata normal form. 4/3376 useless extension candidates. Maximal degree in co-relation 15530. Up to 3024 conditions per place. [2024-06-28 03:16:58,749 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 78 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-28 03:16:58,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 115 transitions, 858 flow [2024-06-28 03:16:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 03:16:58,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-28 03:16:58,750 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 546 flow. Second operand 8 states and 167 transitions. [2024-06-28 03:16:58,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 115 transitions, 858 flow [2024-06-28 03:16:58,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 115 transitions, 828 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:58,766 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 613 flow [2024-06-28 03:16:58,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=613, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-06-28 03:16:58,767 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2024-06-28 03:16:58,767 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 613 flow [2024-06-28 03:16:58,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:58,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:58,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:58,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:16:58,767 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 03:16:58,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1301579723, now seen corresponding path program 1 times [2024-06-28 03:16:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:58,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76310704] [2024-06-28 03:16:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:58,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:59,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:59,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76310704] [2024-06-28 03:16:59,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76310704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:59,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:59,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336963456] [2024-06-28 03:16:59,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:59,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:59,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:59,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 613 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:59,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:59,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:59,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:00,126 INFO L124 PetriNetUnfolderBase]: 2276/3507 cut-off events. [2024-06-28 03:17:00,126 INFO L125 PetriNetUnfolderBase]: For 43267/43269 co-relation queries the response was YES. [2024-06-28 03:17:00,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16917 conditions, 3507 events. 2276/3507 cut-off events. For 43267/43269 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17665 event pairs, 850 based on Foata normal form. 2/3508 useless extension candidates. Maximal degree in co-relation 16884. Up to 3198 conditions per place. [2024-06-28 03:17:00,169 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 75 selfloop transitions, 36 changer transitions 0/116 dead transitions. [2024-06-28 03:17:00,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 999 flow [2024-06-28 03:17:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:00,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 03:17:00,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 03:17:00,172 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 613 flow. Second operand 7 states and 147 transitions. [2024-06-28 03:17:00,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 999 flow [2024-06-28 03:17:00,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 928 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:00,194 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 660 flow [2024-06-28 03:17:00,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-06-28 03:17:00,194 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-06-28 03:17:00,194 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 660 flow [2024-06-28 03:17:00,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:00,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:00,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:00,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:17:00,195 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 03:17:00,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1301585520, now seen corresponding path program 1 times [2024-06-28 03:17:00,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:00,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843271878] [2024-06-28 03:17:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:00,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843271878] [2024-06-28 03:17:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843271878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:01,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:01,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464615387] [2024-06-28 03:17:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:01,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:01,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 660 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:01,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:01,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:01,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:01,801 INFO L124 PetriNetUnfolderBase]: 2352/3618 cut-off events. [2024-06-28 03:17:01,802 INFO L125 PetriNetUnfolderBase]: For 49575/49577 co-relation queries the response was YES. [2024-06-28 03:17:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17813 conditions, 3618 events. 2352/3618 cut-off events. For 49575/49577 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18222 event pairs, 760 based on Foata normal form. 8/3625 useless extension candidates. Maximal degree in co-relation 17779. Up to 3174 conditions per place. [2024-06-28 03:17:01,821 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 87 selfloop transitions, 38 changer transitions 0/130 dead transitions. [2024-06-28 03:17:01,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 130 transitions, 1140 flow [2024-06-28 03:17:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 03:17:01,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 03:17:01,822 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 660 flow. Second operand 8 states and 166 transitions. [2024-06-28 03:17:01,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 130 transitions, 1140 flow [2024-06-28 03:17:01,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 1038 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:01,851 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 749 flow [2024-06-28 03:17:01,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=749, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-06-28 03:17:01,851 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-06-28 03:17:01,851 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 749 flow [2024-06-28 03:17:01,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:01,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:01,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:01,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:17:01,852 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 03:17:01,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:01,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1301585303, now seen corresponding path program 2 times [2024-06-28 03:17:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:01,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188794130] [2024-06-28 03:17:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:01,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:02,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188794130] [2024-06-28 03:17:02,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188794130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:02,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:02,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:02,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974408290] [2024-06-28 03:17:02,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:02,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:02,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:02,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 749 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:02,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:02,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:02,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:03,303 INFO L124 PetriNetUnfolderBase]: 2363/3634 cut-off events. [2024-06-28 03:17:03,303 INFO L125 PetriNetUnfolderBase]: For 55927/55929 co-relation queries the response was YES. [2024-06-28 03:17:03,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18999 conditions, 3634 events. 2363/3634 cut-off events. For 55927/55929 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18303 event pairs, 790 based on Foata normal form. 2/3635 useless extension candidates. Maximal degree in co-relation 18963. Up to 3320 conditions per place. [2024-06-28 03:17:03,323 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 85 selfloop transitions, 36 changer transitions 0/126 dead transitions. [2024-06-28 03:17:03,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 126 transitions, 1159 flow [2024-06-28 03:17:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 03:17:03,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:17:03,325 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 749 flow. Second operand 7 states and 143 transitions. [2024-06-28 03:17:03,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 126 transitions, 1159 flow [2024-06-28 03:17:03,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 126 transitions, 1112 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:03,353 INFO L231 Difference]: Finished difference. Result has 91 places, 102 transitions, 825 flow [2024-06-28 03:17:03,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=825, PETRI_PLACES=91, PETRI_TRANSITIONS=102} [2024-06-28 03:17:03,354 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-06-28 03:17:03,354 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 102 transitions, 825 flow [2024-06-28 03:17:03,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:03,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:03,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:17:03,355 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 03:17:03,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash -350419782, now seen corresponding path program 2 times [2024-06-28 03:17:03,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:03,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056591247] [2024-06-28 03:17:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:04,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:04,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056591247] [2024-06-28 03:17:04,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056591247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:04,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:04,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:04,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288490228] [2024-06-28 03:17:04,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:04,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:04,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:04,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 102 transitions, 825 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:04,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:04,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:04,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:04,817 INFO L124 PetriNetUnfolderBase]: 2385/3670 cut-off events. [2024-06-28 03:17:04,817 INFO L125 PetriNetUnfolderBase]: For 62099/62099 co-relation queries the response was YES. [2024-06-28 03:17:04,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19503 conditions, 3670 events. 2385/3670 cut-off events. For 62099/62099 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18534 event pairs, 782 based on Foata normal form. 4/3673 useless extension candidates. Maximal degree in co-relation 19464. Up to 3466 conditions per place. [2024-06-28 03:17:04,838 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 107 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-06-28 03:17:04,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 1177 flow [2024-06-28 03:17:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:17:04,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:17:04,840 INFO L175 Difference]: Start difference. First operand has 91 places, 102 transitions, 825 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:17:04,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 129 transitions, 1177 flow [2024-06-28 03:17:04,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 129 transitions, 1101 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:04,867 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 839 flow [2024-06-28 03:17:04,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=839, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2024-06-28 03:17:04,868 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-06-28 03:17:04,868 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 839 flow [2024-06-28 03:17:04,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:04,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:04,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:04,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:17:04,868 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 03:17:04,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1942965446, now seen corresponding path program 3 times [2024-06-28 03:17:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:04,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42460594] [2024-06-28 03:17:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:04,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:05,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:05,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42460594] [2024-06-28 03:17:05,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42460594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:05,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:05,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:05,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281009850] [2024-06-28 03:17:05,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:05,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:05,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:05,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:05,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 839 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:05,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:05,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:05,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:06,460 INFO L124 PetriNetUnfolderBase]: 2407/3707 cut-off events. [2024-06-28 03:17:06,460 INFO L125 PetriNetUnfolderBase]: For 69226/69226 co-relation queries the response was YES. [2024-06-28 03:17:06,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20125 conditions, 3707 events. 2407/3707 cut-off events. For 69226/69226 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18743 event pairs, 782 based on Foata normal form. 4/3710 useless extension candidates. Maximal degree in co-relation 20085. Up to 3471 conditions per place. [2024-06-28 03:17:06,478 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 106 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-06-28 03:17:06,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 133 transitions, 1209 flow [2024-06-28 03:17:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:17:06,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:17:06,479 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 839 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:17:06,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 133 transitions, 1209 flow [2024-06-28 03:17:06,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 133 transitions, 1141 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:06,501 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 877 flow [2024-06-28 03:17:06,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=877, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2024-06-28 03:17:06,501 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2024-06-28 03:17:06,501 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 877 flow [2024-06-28 03:17:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:06,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:06,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:06,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:17:06,502 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:06,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1950317096, now seen corresponding path program 4 times [2024-06-28 03:17:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:06,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892191267] [2024-06-28 03:17:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:06,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:07,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:07,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892191267] [2024-06-28 03:17:07,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892191267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:07,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:07,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:07,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705023238] [2024-06-28 03:17:07,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:07,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:07,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:07,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:07,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:07,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 877 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:07,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:07,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:07,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:08,059 INFO L124 PetriNetUnfolderBase]: 2397/3693 cut-off events. [2024-06-28 03:17:08,060 INFO L125 PetriNetUnfolderBase]: For 75215/75215 co-relation queries the response was YES. [2024-06-28 03:17:08,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20405 conditions, 3693 events. 2397/3693 cut-off events. For 75215/75215 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18648 event pairs, 780 based on Foata normal form. 4/3696 useless extension candidates. Maximal degree in co-relation 20365. Up to 3421 conditions per place. [2024-06-28 03:17:08,081 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 29 changer transitions 0/136 dead transitions. [2024-06-28 03:17:08,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 1259 flow [2024-06-28 03:17:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:17:08,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 03:17:08,082 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 877 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:17:08,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 1259 flow [2024-06-28 03:17:08,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 136 transitions, 1181 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:08,111 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 925 flow [2024-06-28 03:17:08,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=925, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2024-06-28 03:17:08,112 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2024-06-28 03:17:08,112 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 925 flow [2024-06-28 03:17:08,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 03:17:08,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:08,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:08,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:17:08,113 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 03:17:08,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1942965663, now seen corresponding path program 3 times [2024-06-28 03:17:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:08,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562120708] [2024-06-28 03:17:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:08,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562120708] [2024-06-28 03:17:08,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562120708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:08,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:08,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:08,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658060950] [2024-06-28 03:17:08,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:08,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:08,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:08,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:08,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:08,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:08,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:09,514 INFO L124 PetriNetUnfolderBase]: 2392/3687 cut-off events. [2024-06-28 03:17:09,514 INFO L125 PetriNetUnfolderBase]: For 81294/81296 co-relation queries the response was YES. [2024-06-28 03:17:09,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20731 conditions, 3687 events. 2392/3687 cut-off events. For 81294/81296 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18639 event pairs, 784 based on Foata normal form. 4/3690 useless extension candidates. Maximal degree in co-relation 20690. Up to 3486 conditions per place. [2024-06-28 03:17:09,541 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 109 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2024-06-28 03:17:09,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 130 transitions, 1223 flow [2024-06-28 03:17:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:17:09,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:17:09,543 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 925 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:17:09,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 130 transitions, 1223 flow [2024-06-28 03:17:09,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 130 transitions, 1103 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:09,585 INFO L231 Difference]: Finished difference. Result has 100 places, 111 transitions, 845 flow [2024-06-28 03:17:09,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=100, PETRI_TRANSITIONS=111} [2024-06-28 03:17:09,585 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2024-06-28 03:17:09,585 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 111 transitions, 845 flow [2024-06-28 03:17:09,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:09,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:09,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:09,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:17:09,586 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:09,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash 986477248, now seen corresponding path program 1 times [2024-06-28 03:17:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:09,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492071385] [2024-06-28 03:17:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:09,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:10,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:10,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492071385] [2024-06-28 03:17:10,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492071385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:10,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:10,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:10,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052288386] [2024-06-28 03:17:10,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:10,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:10,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:10,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:10,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 111 transitions, 845 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:10,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:10,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:10,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:10,989 INFO L124 PetriNetUnfolderBase]: 2955/4406 cut-off events. [2024-06-28 03:17:10,989 INFO L125 PetriNetUnfolderBase]: For 113140/113140 co-relation queries the response was YES. [2024-06-28 03:17:11,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25422 conditions, 4406 events. 2955/4406 cut-off events. For 113140/113140 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21469 event pairs, 1046 based on Foata normal form. 1/4406 useless extension candidates. Maximal degree in co-relation 25380. Up to 4306 conditions per place. [2024-06-28 03:17:11,014 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 101 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2024-06-28 03:17:11,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 123 transitions, 1119 flow [2024-06-28 03:17:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 03:17:11,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-28 03:17:11,016 INFO L175 Difference]: Start difference. First operand has 100 places, 111 transitions, 845 flow. Second operand 6 states and 103 transitions. [2024-06-28 03:17:11,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 123 transitions, 1119 flow [2024-06-28 03:17:11,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 123 transitions, 1054 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:11,059 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 842 flow [2024-06-28 03:17:11,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=842, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2024-06-28 03:17:11,060 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2024-06-28 03:17:11,061 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 842 flow [2024-06-28 03:17:11,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:11,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:11,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:11,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:17:11,061 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 03:17:11,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:11,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1126682078, now seen corresponding path program 1 times [2024-06-28 03:17:11,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:11,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888517285] [2024-06-28 03:17:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:12,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:12,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888517285] [2024-06-28 03:17:12,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888517285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:12,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:12,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:12,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629395070] [2024-06-28 03:17:12,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:12,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:12,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:12,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:12,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:12,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:12,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 842 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:12,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:12,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:12,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:12,937 INFO L124 PetriNetUnfolderBase]: 2354/3677 cut-off events. [2024-06-28 03:17:12,937 INFO L125 PetriNetUnfolderBase]: For 107446/107448 co-relation queries the response was YES. [2024-06-28 03:17:12,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22319 conditions, 3677 events. 2354/3677 cut-off events. For 107446/107448 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19216 event pairs, 572 based on Foata normal form. 6/3682 useless extension candidates. Maximal degree in co-relation 22276. Up to 3199 conditions per place. [2024-06-28 03:17:12,963 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 108 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2024-06-28 03:17:12,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 151 transitions, 1350 flow [2024-06-28 03:17:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 03:17:12,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-28 03:17:12,966 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 842 flow. Second operand 8 states and 169 transitions. [2024-06-28 03:17:12,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 151 transitions, 1350 flow [2024-06-28 03:17:13,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 1310 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:13,008 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 935 flow [2024-06-28 03:17:13,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2024-06-28 03:17:13,009 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-06-28 03:17:13,009 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 935 flow [2024-06-28 03:17:13,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:13,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:13,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:13,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:17:13,010 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 03:17:13,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:13,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1126742528, now seen corresponding path program 2 times [2024-06-28 03:17:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:13,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332326745] [2024-06-28 03:17:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:14,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332326745] [2024-06-28 03:17:14,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332326745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:14,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577190767] [2024-06-28 03:17:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:14,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:14,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:14,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 935 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:14,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:14,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:14,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:14,766 INFO L124 PetriNetUnfolderBase]: 2382/3720 cut-off events. [2024-06-28 03:17:14,766 INFO L125 PetriNetUnfolderBase]: For 116911/116913 co-relation queries the response was YES. [2024-06-28 03:17:14,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23188 conditions, 3720 events. 2382/3720 cut-off events. For 116911/116913 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19457 event pairs, 733 based on Foata normal form. 6/3725 useless extension candidates. Maximal degree in co-relation 23144. Up to 3315 conditions per place. [2024-06-28 03:17:14,793 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 111 selfloop transitions, 28 changer transitions 0/153 dead transitions. [2024-06-28 03:17:14,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 153 transitions, 1343 flow [2024-06-28 03:17:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 03:17:14,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 03:17:14,794 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 935 flow. Second operand 8 states and 166 transitions. [2024-06-28 03:17:14,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 153 transitions, 1343 flow [2024-06-28 03:17:14,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 153 transitions, 1269 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:14,851 INFO L231 Difference]: Finished difference. Result has 107 places, 123 transitions, 982 flow [2024-06-28 03:17:14,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=982, PETRI_PLACES=107, PETRI_TRANSITIONS=123} [2024-06-28 03:17:14,851 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2024-06-28 03:17:14,851 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 123 transitions, 982 flow [2024-06-28 03:17:14,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:14,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:14,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:14,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:17:14,852 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:14,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1126742652, now seen corresponding path program 1 times [2024-06-28 03:17:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:14,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802069228] [2024-06-28 03:17:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:15,847 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 03:17:15,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:15,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802069228] [2024-06-28 03:17:15,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802069228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:15,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:15,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:15,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535599827] [2024-06-28 03:17:15,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:15,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:15,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:15,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:15,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:16,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:16,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 982 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:16,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:16,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:16,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:16,518 INFO L124 PetriNetUnfolderBase]: 2526/3869 cut-off events. [2024-06-28 03:17:16,518 INFO L125 PetriNetUnfolderBase]: For 125084/125086 co-relation queries the response was YES. [2024-06-28 03:17:16,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24168 conditions, 3869 events. 2526/3869 cut-off events. For 125084/125086 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19671 event pairs, 766 based on Foata normal form. 2/3870 useless extension candidates. Maximal degree in co-relation 24122. Up to 3442 conditions per place. [2024-06-28 03:17:16,549 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 109 selfloop transitions, 45 changer transitions 0/160 dead transitions. [2024-06-28 03:17:16,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 160 transitions, 1536 flow [2024-06-28 03:17:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:17:16,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:17:16,550 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 982 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:17:16,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 160 transitions, 1536 flow [2024-06-28 03:17:16,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 160 transitions, 1476 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:16,613 INFO L231 Difference]: Finished difference. Result has 111 places, 129 transitions, 1098 flow [2024-06-28 03:17:16,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1098, PETRI_PLACES=111, PETRI_TRANSITIONS=129} [2024-06-28 03:17:16,614 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-28 03:17:16,614 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 129 transitions, 1098 flow [2024-06-28 03:17:16,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:16,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:16,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:16,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:17:16,615 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 03:17:16,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1129543812, now seen corresponding path program 2 times [2024-06-28 03:17:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:16,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063550378] [2024-06-28 03:17:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:17,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:17,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063550378] [2024-06-28 03:17:17,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063550378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:17,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649120488] [2024-06-28 03:17:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:17,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:17,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:18,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:18,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 129 transitions, 1098 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:18,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:18,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:18,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:18,686 INFO L124 PetriNetUnfolderBase]: 2537/3885 cut-off events. [2024-06-28 03:17:18,686 INFO L125 PetriNetUnfolderBase]: For 135006/135008 co-relation queries the response was YES. [2024-06-28 03:17:18,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24988 conditions, 3885 events. 2537/3885 cut-off events. For 135006/135008 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19778 event pairs, 766 based on Foata normal form. 2/3886 useless extension candidates. Maximal degree in co-relation 24941. Up to 3536 conditions per place. [2024-06-28 03:17:18,716 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 113 selfloop transitions, 39 changer transitions 0/158 dead transitions. [2024-06-28 03:17:18,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 158 transitions, 1510 flow [2024-06-28 03:17:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:17:18,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 03:17:18,719 INFO L175 Difference]: Start difference. First operand has 111 places, 129 transitions, 1098 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:17:18,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 158 transitions, 1510 flow [2024-06-28 03:17:18,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 158 transitions, 1425 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:18,778 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 1147 flow [2024-06-28 03:17:18,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1147, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2024-06-28 03:17:18,779 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-28 03:17:18,779 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 1147 flow [2024-06-28 03:17:18,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:18,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:18,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:18,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:17:18,780 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 03:17:18,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:18,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1129539038, now seen corresponding path program 3 times [2024-06-28 03:17:18,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:18,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318077423] [2024-06-28 03:17:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:18,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:19,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:19,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318077423] [2024-06-28 03:17:19,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318077423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:19,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:19,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252295968] [2024-06-28 03:17:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:19,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:20,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:20,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 1147 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:20,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:20,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:20,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:20,634 INFO L124 PetriNetUnfolderBase]: 2402/3746 cut-off events. [2024-06-28 03:17:20,634 INFO L125 PetriNetUnfolderBase]: For 143357/143359 co-relation queries the response was YES. [2024-06-28 03:17:20,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24654 conditions, 3746 events. 2402/3746 cut-off events. For 143357/143359 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19530 event pairs, 725 based on Foata normal form. 6/3751 useless extension candidates. Maximal degree in co-relation 24605. Up to 3363 conditions per place. [2024-06-28 03:17:20,660 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 118 selfloop transitions, 24 changer transitions 0/159 dead transitions. [2024-06-28 03:17:20,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 159 transitions, 1499 flow [2024-06-28 03:17:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 03:17:20,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 03:17:20,661 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 1147 flow. Second operand 8 states and 163 transitions. [2024-06-28 03:17:20,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 159 transitions, 1499 flow [2024-06-28 03:17:20,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 159 transitions, 1387 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:20,725 INFO L231 Difference]: Finished difference. Result has 117 places, 132 transitions, 1090 flow [2024-06-28 03:17:20,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1090, PETRI_PLACES=117, PETRI_TRANSITIONS=132} [2024-06-28 03:17:20,725 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2024-06-28 03:17:20,725 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 132 transitions, 1090 flow [2024-06-28 03:17:20,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:20,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:20,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:20,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:17:20,726 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 03:17:20,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1578971330, now seen corresponding path program 3 times [2024-06-28 03:17:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:20,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843643249] [2024-06-28 03:17:20,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:21,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:21,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843643249] [2024-06-28 03:17:21,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843643249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:21,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:21,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163995666] [2024-06-28 03:17:21,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:21,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:21,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:21,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 132 transitions, 1090 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:21,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:21,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:21,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:22,512 INFO L124 PetriNetUnfolderBase]: 2540/3889 cut-off events. [2024-06-28 03:17:22,512 INFO L125 PetriNetUnfolderBase]: For 151969/151971 co-relation queries the response was YES. [2024-06-28 03:17:22,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25596 conditions, 3889 events. 2540/3889 cut-off events. For 151969/151971 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19804 event pairs, 764 based on Foata normal form. 2/3890 useless extension candidates. Maximal degree in co-relation 25546. Up to 3522 conditions per place. [2024-06-28 03:17:22,535 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 111 selfloop transitions, 44 changer transitions 0/161 dead transitions. [2024-06-28 03:17:22,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 161 transitions, 1506 flow [2024-06-28 03:17:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:17:22,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:17:22,537 INFO L175 Difference]: Start difference. First operand has 117 places, 132 transitions, 1090 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:17:22,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 161 transitions, 1506 flow [2024-06-28 03:17:22,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 161 transitions, 1430 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:22,607 INFO L231 Difference]: Finished difference. Result has 117 places, 135 transitions, 1156 flow [2024-06-28 03:17:22,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1156, PETRI_PLACES=117, PETRI_TRANSITIONS=135} [2024-06-28 03:17:22,608 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2024-06-28 03:17:22,609 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 135 transitions, 1156 flow [2024-06-28 03:17:22,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:22,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:22,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:22,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:17:22,609 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 03:17:22,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:22,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1694262500, now seen corresponding path program 4 times [2024-06-28 03:17:22,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:22,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749158806] [2024-06-28 03:17:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:22,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749158806] [2024-06-28 03:17:23,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749158806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:23,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:23,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:23,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490703790] [2024-06-28 03:17:23,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:23,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:23,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:23,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:23,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 135 transitions, 1156 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:23,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:23,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:23,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:24,429 INFO L124 PetriNetUnfolderBase]: 2551/3905 cut-off events. [2024-06-28 03:17:24,429 INFO L125 PetriNetUnfolderBase]: For 161822/161824 co-relation queries the response was YES. [2024-06-28 03:17:24,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26071 conditions, 3905 events. 2551/3905 cut-off events. For 161822/161824 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19851 event pairs, 764 based on Foata normal form. 2/3906 useless extension candidates. Maximal degree in co-relation 26020. Up to 3511 conditions per place. [2024-06-28 03:17:24,456 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 118 selfloop transitions, 48 changer transitions 0/172 dead transitions. [2024-06-28 03:17:24,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 1732 flow [2024-06-28 03:17:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 03:17:24,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-28 03:17:24,458 INFO L175 Difference]: Start difference. First operand has 117 places, 135 transitions, 1156 flow. Second operand 8 states and 169 transitions. [2024-06-28 03:17:24,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 1732 flow [2024-06-28 03:17:24,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 172 transitions, 1620 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:24,532 INFO L231 Difference]: Finished difference. Result has 119 places, 138 transitions, 1194 flow [2024-06-28 03:17:24,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=119, PETRI_TRANSITIONS=138} [2024-06-28 03:17:24,536 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 74 predicate places. [2024-06-28 03:17:24,536 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 138 transitions, 1194 flow [2024-06-28 03:17:24,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:24,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:24,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:24,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:17:24,537 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 03:17:24,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1694267150, now seen corresponding path program 5 times [2024-06-28 03:17:24,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:24,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669674138] [2024-06-28 03:17:24,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:24,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:25,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:25,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669674138] [2024-06-28 03:17:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669674138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:25,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965246344] [2024-06-28 03:17:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:25,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:25,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:25,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:25,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 138 transitions, 1194 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:25,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:25,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:25,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:26,431 INFO L124 PetriNetUnfolderBase]: 2562/3921 cut-off events. [2024-06-28 03:17:26,431 INFO L125 PetriNetUnfolderBase]: For 171891/171893 co-relation queries the response was YES. [2024-06-28 03:17:26,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26539 conditions, 3921 events. 2562/3921 cut-off events. For 171891/171893 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19926 event pairs, 764 based on Foata normal form. 2/3922 useless extension candidates. Maximal degree in co-relation 26487. Up to 3572 conditions per place. [2024-06-28 03:17:26,462 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 122 selfloop transitions, 42 changer transitions 0/170 dead transitions. [2024-06-28 03:17:26,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 170 transitions, 1648 flow [2024-06-28 03:17:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:17:26,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:17:26,464 INFO L175 Difference]: Start difference. First operand has 119 places, 138 transitions, 1194 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:17:26,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 170 transitions, 1648 flow [2024-06-28 03:17:26,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 170 transitions, 1504 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:26,550 INFO L231 Difference]: Finished difference. Result has 121 places, 141 transitions, 1200 flow [2024-06-28 03:17:26,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1200, PETRI_PLACES=121, PETRI_TRANSITIONS=141} [2024-06-28 03:17:26,550 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 76 predicate places. [2024-06-28 03:17:26,550 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 141 transitions, 1200 flow [2024-06-28 03:17:26,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:26,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:26,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:26,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:17:26,551 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:26,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1244835168, now seen corresponding path program 1 times [2024-06-28 03:17:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:26,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184184699] [2024-06-28 03:17:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:27,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:27,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184184699] [2024-06-28 03:17:27,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184184699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:27,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:27,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:27,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248974796] [2024-06-28 03:17:27,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:27,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:27,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:27,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:27,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 141 transitions, 1200 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:27,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:27,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:27,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:28,088 INFO L124 PetriNetUnfolderBase]: 2584/3958 cut-off events. [2024-06-28 03:17:28,089 INFO L125 PetriNetUnfolderBase]: For 183494/183496 co-relation queries the response was YES. [2024-06-28 03:17:28,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26985 conditions, 3958 events. 2584/3958 cut-off events. For 183494/183496 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 20162 event pairs, 732 based on Foata normal form. 4/3961 useless extension candidates. Maximal degree in co-relation 26932. Up to 3427 conditions per place. [2024-06-28 03:17:28,115 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 117 selfloop transitions, 55 changer transitions 0/178 dead transitions. [2024-06-28 03:17:28,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 178 transitions, 1802 flow [2024-06-28 03:17:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 03:17:28,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-06-28 03:17:28,117 INFO L175 Difference]: Start difference. First operand has 121 places, 141 transitions, 1200 flow. Second operand 8 states and 170 transitions. [2024-06-28 03:17:28,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 178 transitions, 1802 flow [2024-06-28 03:17:28,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1688 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:28,220 INFO L231 Difference]: Finished difference. Result has 123 places, 144 transitions, 1252 flow [2024-06-28 03:17:28,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1252, PETRI_PLACES=123, PETRI_TRANSITIONS=144} [2024-06-28 03:17:28,221 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2024-06-28 03:17:28,221 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 144 transitions, 1252 flow [2024-06-28 03:17:28,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:28,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:28,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:28,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:17:28,222 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:28,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1245008148, now seen corresponding path program 2 times [2024-06-28 03:17:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88311624] [2024-06-28 03:17:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:29,103 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 03:17:29,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88311624] [2024-06-28 03:17:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88311624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:29,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:29,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176391974] [2024-06-28 03:17:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:29,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:29,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:29,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 144 transitions, 1252 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:29,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:29,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:29,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:29,855 INFO L124 PetriNetUnfolderBase]: 2638/4036 cut-off events. [2024-06-28 03:17:29,855 INFO L125 PetriNetUnfolderBase]: For 197099/197101 co-relation queries the response was YES. [2024-06-28 03:17:29,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28011 conditions, 4036 events. 2638/4036 cut-off events. For 197099/197101 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 20662 event pairs, 737 based on Foata normal form. 4/4039 useless extension candidates. Maximal degree in co-relation 27957. Up to 3473 conditions per place. [2024-06-28 03:17:29,879 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 122 selfloop transitions, 56 changer transitions 0/184 dead transitions. [2024-06-28 03:17:29,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 184 transitions, 2054 flow [2024-06-28 03:17:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 03:17:29,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-06-28 03:17:29,881 INFO L175 Difference]: Start difference. First operand has 123 places, 144 transitions, 1252 flow. Second operand 8 states and 170 transitions. [2024-06-28 03:17:29,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 184 transitions, 2054 flow [2024-06-28 03:17:29,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 184 transitions, 1888 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:29,959 INFO L231 Difference]: Finished difference. Result has 125 places, 150 transitions, 1314 flow [2024-06-28 03:17:29,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1314, PETRI_PLACES=125, PETRI_TRANSITIONS=150} [2024-06-28 03:17:29,960 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 80 predicate places. [2024-06-28 03:17:29,960 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 150 transitions, 1314 flow [2024-06-28 03:17:29,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:29,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:29,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:29,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:17:29,960 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:29,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:29,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1245014658, now seen corresponding path program 3 times [2024-06-28 03:17:29,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:29,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753407471] [2024-06-28 03:17:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:29,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753407471] [2024-06-28 03:17:30,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753407471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:30,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:30,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:30,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931967962] [2024-06-28 03:17:30,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:30,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:30,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:30,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:30,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:30,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:30,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 150 transitions, 1314 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:30,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:30,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:30,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:31,468 INFO L124 PetriNetUnfolderBase]: 2628/4022 cut-off events. [2024-06-28 03:17:31,468 INFO L125 PetriNetUnfolderBase]: For 205596/205598 co-relation queries the response was YES. [2024-06-28 03:17:31,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28077 conditions, 4022 events. 2628/4022 cut-off events. For 205596/205598 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20575 event pairs, 737 based on Foata normal form. 4/4025 useless extension candidates. Maximal degree in co-relation 28022. Up to 3465 conditions per place. [2024-06-28 03:17:31,496 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 118 selfloop transitions, 57 changer transitions 0/181 dead transitions. [2024-06-28 03:17:31,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 181 transitions, 1874 flow [2024-06-28 03:17:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 03:17:31,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 03:17:31,497 INFO L175 Difference]: Start difference. First operand has 125 places, 150 transitions, 1314 flow. Second operand 8 states and 166 transitions. [2024-06-28 03:17:31,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 181 transitions, 1874 flow [2024-06-28 03:17:31,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 181 transitions, 1731 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:31,586 INFO L231 Difference]: Finished difference. Result has 129 places, 150 transitions, 1294 flow [2024-06-28 03:17:31,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1294, PETRI_PLACES=129, PETRI_TRANSITIONS=150} [2024-06-28 03:17:31,586 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 84 predicate places. [2024-06-28 03:17:31,587 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 1294 flow [2024-06-28 03:17:31,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:31,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:31,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:31,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:17:31,587 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:31,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:31,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1245007962, now seen corresponding path program 6 times [2024-06-28 03:17:31,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:31,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512543331] [2024-06-28 03:17:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512543331] [2024-06-28 03:17:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512543331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178628051] [2024-06-28 03:17:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:32,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:32,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:32,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 1294 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:32,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:32,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:32,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:33,308 INFO L124 PetriNetUnfolderBase]: 2639/4038 cut-off events. [2024-06-28 03:17:33,308 INFO L125 PetriNetUnfolderBase]: For 215723/215725 co-relation queries the response was YES. [2024-06-28 03:17:33,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28458 conditions, 4038 events. 2639/4038 cut-off events. For 215723/215725 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20667 event pairs, 774 based on Foata normal form. 2/4039 useless extension candidates. Maximal degree in co-relation 28402. Up to 3684 conditions per place. [2024-06-28 03:17:33,338 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 134 selfloop transitions, 39 changer transitions 0/179 dead transitions. [2024-06-28 03:17:33,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 179 transitions, 1758 flow [2024-06-28 03:17:33,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:17:33,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 03:17:33,340 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 1294 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:17:33,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 179 transitions, 1758 flow [2024-06-28 03:17:33,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 179 transitions, 1635 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:33,455 INFO L231 Difference]: Finished difference. Result has 130 places, 153 transitions, 1315 flow [2024-06-28 03:17:33,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=130, PETRI_TRANSITIONS=153} [2024-06-28 03:17:33,456 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 85 predicate places. [2024-06-28 03:17:33,456 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 153 transitions, 1315 flow [2024-06-28 03:17:33,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:33,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:33,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:33,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:17:33,457 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:33,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -854899131, now seen corresponding path program 1 times [2024-06-28 03:17:33,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:33,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697866566] [2024-06-28 03:17:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697866566] [2024-06-28 03:17:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697866566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:34,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:34,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032482497] [2024-06-28 03:17:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:34,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:34,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:34,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:34,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 153 transitions, 1315 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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 03:17:34,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:34,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:34,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:34,885 INFO L124 PetriNetUnfolderBase]: 2970/4519 cut-off events. [2024-06-28 03:17:34,885 INFO L125 PetriNetUnfolderBase]: For 258010/258010 co-relation queries the response was YES. [2024-06-28 03:17:34,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31983 conditions, 4519 events. 2970/4519 cut-off events. For 258010/258010 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22781 event pairs, 933 based on Foata normal form. 1/4519 useless extension candidates. Maximal degree in co-relation 31926. Up to 4218 conditions per place. [2024-06-28 03:17:34,924 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 139 selfloop transitions, 16 changer transitions 0/175 dead transitions. [2024-06-28 03:17:34,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 175 transitions, 1815 flow [2024-06-28 03:17:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 03:17:34,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:17:34,925 INFO L175 Difference]: Start difference. First operand has 130 places, 153 transitions, 1315 flow. Second operand 6 states and 117 transitions. [2024-06-28 03:17:34,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 175 transitions, 1815 flow [2024-06-28 03:17:35,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 175 transitions, 1701 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:35,048 INFO L231 Difference]: Finished difference. Result has 130 places, 159 transitions, 1325 flow [2024-06-28 03:17:35,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1325, PETRI_PLACES=130, PETRI_TRANSITIONS=159} [2024-06-28 03:17:35,049 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 85 predicate places. [2024-06-28 03:17:35,049 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 159 transitions, 1325 flow [2024-06-28 03:17:35,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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 03:17:35,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:35,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:35,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:17:35,050 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:35,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash -102385312, now seen corresponding path program 4 times [2024-06-28 03:17:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:35,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673844243] [2024-06-28 03:17:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673844243] [2024-06-28 03:17:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673844243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:35,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:35,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045928916] [2024-06-28 03:17:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:35,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:35,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 159 transitions, 1325 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:35,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:35,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:35,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:36,587 INFO L124 PetriNetUnfolderBase]: 2729/4159 cut-off events. [2024-06-28 03:17:36,588 INFO L125 PetriNetUnfolderBase]: For 244125/244127 co-relation queries the response was YES. [2024-06-28 03:17:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30010 conditions, 4159 events. 2729/4159 cut-off events. For 244125/244127 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 21166 event pairs, 775 based on Foata normal form. 6/4164 useless extension candidates. Maximal degree in co-relation 29952. Up to 3809 conditions per place. [2024-06-28 03:17:36,621 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 158 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-28 03:17:36,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 195 transitions, 2159 flow [2024-06-28 03:17:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 03:17:36,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-28 03:17:36,623 INFO L175 Difference]: Start difference. First operand has 130 places, 159 transitions, 1325 flow. Second operand 8 states and 161 transitions. [2024-06-28 03:17:36,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 195 transitions, 2159 flow [2024-06-28 03:17:36,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 195 transitions, 2117 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 03:17:36,735 INFO L231 Difference]: Finished difference. Result has 136 places, 165 transitions, 1455 flow [2024-06-28 03:17:36,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1455, PETRI_PLACES=136, PETRI_TRANSITIONS=165} [2024-06-28 03:17:36,736 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2024-06-28 03:17:36,736 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 165 transitions, 1455 flow [2024-06-28 03:17:36,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:36,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:36,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:17:36,736 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:36,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:36,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2013609110, now seen corresponding path program 7 times [2024-06-28 03:17:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:36,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919658111] [2024-06-28 03:17:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:37,618 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 03:17:37,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:37,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919658111] [2024-06-28 03:17:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919658111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:37,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:37,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:37,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908020028] [2024-06-28 03:17:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:37,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:37,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:37,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:37,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:37,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 165 transitions, 1455 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:37,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:37,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:37,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:38,485 INFO L124 PetriNetUnfolderBase]: 2724/4152 cut-off events. [2024-06-28 03:17:38,486 INFO L125 PetriNetUnfolderBase]: For 254630/254632 co-relation queries the response was YES. [2024-06-28 03:17:38,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30380 conditions, 4152 events. 2724/4152 cut-off events. For 254630/254632 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 21157 event pairs, 780 based on Foata normal form. 4/4155 useless extension candidates. Maximal degree in co-relation 30320. Up to 3914 conditions per place. [2024-06-28 03:17:38,518 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 163 selfloop transitions, 19 changer transitions 0/188 dead transitions. [2024-06-28 03:17:38,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 188 transitions, 1877 flow [2024-06-28 03:17:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:17:38,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:17:38,519 INFO L175 Difference]: Start difference. First operand has 136 places, 165 transitions, 1455 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:17:38,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 188 transitions, 1877 flow [2024-06-28 03:17:38,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 188 transitions, 1734 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:38,690 INFO L231 Difference]: Finished difference. Result has 139 places, 165 transitions, 1358 flow [2024-06-28 03:17:38,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1358, PETRI_PLACES=139, PETRI_TRANSITIONS=165} [2024-06-28 03:17:38,691 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-28 03:17:38,691 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 165 transitions, 1358 flow [2024-06-28 03:17:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:38,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:38,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:38,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:17:38,691 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:38,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:38,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2013609296, now seen corresponding path program 5 times [2024-06-28 03:17:38,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:38,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761220398] [2024-06-28 03:17:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:38,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:39,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:39,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761220398] [2024-06-28 03:17:39,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761220398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:39,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:39,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123708811] [2024-06-28 03:17:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:39,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:39,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:39,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:39,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 165 transitions, 1358 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:39,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:39,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:39,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:40,323 INFO L124 PetriNetUnfolderBase]: 2714/4138 cut-off events. [2024-06-28 03:17:40,323 INFO L125 PetriNetUnfolderBase]: For 264588/264590 co-relation queries the response was YES. [2024-06-28 03:17:40,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30247 conditions, 4138 events. 2714/4138 cut-off events. For 264588/264590 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21107 event pairs, 766 based on Foata normal form. 6/4143 useless extension candidates. Maximal degree in co-relation 30186. Up to 3794 conditions per place. [2024-06-28 03:17:40,357 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 155 selfloop transitions, 32 changer transitions 0/193 dead transitions. [2024-06-28 03:17:40,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 193 transitions, 1952 flow [2024-06-28 03:17:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:17:40,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 03:17:40,358 INFO L175 Difference]: Start difference. First operand has 139 places, 165 transitions, 1358 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:17:40,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 193 transitions, 1952 flow [2024-06-28 03:17:40,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 193 transitions, 1859 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:40,538 INFO L231 Difference]: Finished difference. Result has 140 places, 165 transitions, 1337 flow [2024-06-28 03:17:40,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1337, PETRI_PLACES=140, PETRI_TRANSITIONS=165} [2024-06-28 03:17:40,539 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2024-06-28 03:17:40,539 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 165 transitions, 1337 flow [2024-06-28 03:17:40,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:40,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:40,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:40,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:17:40,540 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 03:17:40,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:40,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2021890016, now seen corresponding path program 6 times [2024-06-28 03:17:40,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:40,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120965075] [2024-06-28 03:17:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:40,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:41,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120965075] [2024-06-28 03:17:41,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120965075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:41,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587007094] [2024-06-28 03:17:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:41,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:41,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:41,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:41,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 165 transitions, 1337 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:41,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:41,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:41,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:42,105 INFO L124 PetriNetUnfolderBase]: 2704/4124 cut-off events. [2024-06-28 03:17:42,106 INFO L125 PetriNetUnfolderBase]: For 274581/274583 co-relation queries the response was YES. [2024-06-28 03:17:42,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30363 conditions, 4124 events. 2704/4124 cut-off events. For 274581/274583 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 21023 event pairs, 771 based on Foata normal form. 6/4129 useless extension candidates. Maximal degree in co-relation 30301. Up to 3863 conditions per place. [2024-06-28 03:17:42,134 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 165 selfloop transitions, 19 changer transitions 0/190 dead transitions. [2024-06-28 03:17:42,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 190 transitions, 1771 flow [2024-06-28 03:17:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:17:42,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:17:42,136 INFO L175 Difference]: Start difference. First operand has 140 places, 165 transitions, 1337 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:17:42,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 190 transitions, 1771 flow [2024-06-28 03:17:42,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 190 transitions, 1650 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:42,311 INFO L231 Difference]: Finished difference. Result has 141 places, 165 transitions, 1262 flow [2024-06-28 03:17:42,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1262, PETRI_PLACES=141, PETRI_TRANSITIONS=165} [2024-06-28 03:17:42,312 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-06-28 03:17:42,312 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 165 transitions, 1262 flow [2024-06-28 03:17:42,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 03:17:42,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:42,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:42,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:17:42,313 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:42,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash 516009219, now seen corresponding path program 2 times [2024-06-28 03:17:42,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:42,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376084809] [2024-06-28 03:17:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:42,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:43,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:43,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376084809] [2024-06-28 03:17:43,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376084809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:43,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:43,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:43,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412183327] [2024-06-28 03:17:43,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:43,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:43,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:43,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:43,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:43,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 165 transitions, 1262 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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 03:17:43,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:43,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:43,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:43,861 INFO L124 PetriNetUnfolderBase]: 3007/4591 cut-off events. [2024-06-28 03:17:43,862 INFO L125 PetriNetUnfolderBase]: For 324832/324835 co-relation queries the response was YES. [2024-06-28 03:17:43,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33773 conditions, 4591 events. 3007/4591 cut-off events. For 324832/324835 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23342 event pairs, 1414 based on Foata normal form. 4/4584 useless extension candidates. Maximal degree in co-relation 33710. Up to 4299 conditions per place. [2024-06-28 03:17:43,893 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 142 selfloop transitions, 13 changer transitions 0/175 dead transitions. [2024-06-28 03:17:43,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 175 transitions, 1606 flow [2024-06-28 03:17:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:17:43,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:17:43,894 INFO L175 Difference]: Start difference. First operand has 141 places, 165 transitions, 1262 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:17:43,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 175 transitions, 1606 flow [2024-06-28 03:17:44,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 175 transitions, 1514 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:44,095 INFO L231 Difference]: Finished difference. Result has 141 places, 167 transitions, 1221 flow [2024-06-28 03:17:44,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1221, PETRI_PLACES=141, PETRI_TRANSITIONS=167} [2024-06-28 03:17:44,095 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-06-28 03:17:44,095 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 167 transitions, 1221 flow [2024-06-28 03:17:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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 03:17:44,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:44,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:44,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:17:44,096 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:44,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash -849179259, now seen corresponding path program 1 times [2024-06-28 03:17:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:44,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706824609] [2024-06-28 03:17:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:44,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706824609] [2024-06-28 03:17:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706824609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:44,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:44,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162189442] [2024-06-28 03:17:44,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:44,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:44,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:44,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 167 transitions, 1221 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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 03:17:44,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:44,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:44,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:45,469 INFO L124 PetriNetUnfolderBase]: 3012/4598 cut-off events. [2024-06-28 03:17:45,469 INFO L125 PetriNetUnfolderBase]: For 339079/339082 co-relation queries the response was YES. [2024-06-28 03:17:45,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34026 conditions, 4598 events. 3012/4598 cut-off events. For 339079/339082 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23393 event pairs, 1414 based on Foata normal form. 4/4591 useless extension candidates. Maximal degree in co-relation 33961. Up to 4293 conditions per place. [2024-06-28 03:17:45,510 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 148 selfloop transitions, 17 changer transitions 0/185 dead transitions. [2024-06-28 03:17:45,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 185 transitions, 1727 flow [2024-06-28 03:17:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-28 03:17:45,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:17:45,511 INFO L175 Difference]: Start difference. First operand has 141 places, 167 transitions, 1221 flow. Second operand 6 states and 114 transitions. [2024-06-28 03:17:45,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 185 transitions, 1727 flow [2024-06-28 03:17:45,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 185 transitions, 1692 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:45,807 INFO L231 Difference]: Finished difference. Result has 142 places, 173 transitions, 1296 flow [2024-06-28 03:17:45,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1296, PETRI_PLACES=142, PETRI_TRANSITIONS=173} [2024-06-28 03:17:45,808 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 97 predicate places. [2024-06-28 03:17:45,808 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 173 transitions, 1296 flow [2024-06-28 03:17:45,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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 03:17:45,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:45,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:45,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:17:45,809 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 03:17:45,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 560701671, now seen corresponding path program 2 times [2024-06-28 03:17:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088828024] [2024-06-28 03:17:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:46,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088828024] [2024-06-28 03:17:46,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088828024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:46,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:46,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:46,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406747276] [2024-06-28 03:17:46,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:46,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:46,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:46,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:46,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:46,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:46,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 1296 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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 03:17:46,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:46,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:46,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:47,265 INFO L124 PetriNetUnfolderBase]: 3009/4595 cut-off events. [2024-06-28 03:17:47,265 INFO L125 PetriNetUnfolderBase]: For 354798/354803 co-relation queries the response was YES. [2024-06-28 03:17:47,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34750 conditions, 4595 events. 3009/4595 cut-off events. For 354798/354803 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23342 event pairs, 1417 based on Foata normal form. 6/4590 useless extension candidates. Maximal degree in co-relation 34684. Up to 4290 conditions per place. [2024-06-28 03:17:47,303 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 144 selfloop transitions, 17 changer transitions 0/181 dead transitions. [2024-06-28 03:17:47,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 181 transitions, 1638 flow [2024-06-28 03:17:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:17:47,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:17:47,304 INFO L175 Difference]: Start difference. First operand has 142 places, 173 transitions, 1296 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:17:47,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 181 transitions, 1638 flow [2024-06-28 03:17:47,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 181 transitions, 1581 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 03:17:47,565 INFO L231 Difference]: Finished difference. Result has 146 places, 173 transitions, 1279 flow [2024-06-28 03:17:47,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1279, PETRI_PLACES=146, PETRI_TRANSITIONS=173} [2024-06-28 03:17:47,565 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2024-06-28 03:17:47,565 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 173 transitions, 1279 flow [2024-06-28 03:17:47,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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 03:17:47,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:47,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:17:47,566 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:47,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2022197846, now seen corresponding path program 1 times [2024-06-28 03:17:47,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:47,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814786333] [2024-06-28 03:17:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:48,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814786333] [2024-06-28 03:17:48,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814786333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:48,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:48,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777101586] [2024-06-28 03:17:48,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:48,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:48,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:48,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:48,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:49,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:49,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 173 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:49,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:49,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:50,057 INFO L124 PetriNetUnfolderBase]: 3135/4719 cut-off events. [2024-06-28 03:17:50,057 INFO L125 PetriNetUnfolderBase]: For 367803/367803 co-relation queries the response was YES. [2024-06-28 03:17:50,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35389 conditions, 4719 events. 3135/4719 cut-off events. For 367803/367803 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23410 event pairs, 1425 based on Foata normal form. 4/4722 useless extension candidates. Maximal degree in co-relation 35321. Up to 4484 conditions per place. [2024-06-28 03:17:50,094 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 178 selfloop transitions, 22 changer transitions 0/205 dead transitions. [2024-06-28 03:17:50,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 1804 flow [2024-06-28 03:17:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:17:50,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-28 03:17:50,095 INFO L175 Difference]: Start difference. First operand has 146 places, 173 transitions, 1279 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:17:50,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 1804 flow [2024-06-28 03:17:50,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 205 transitions, 1753 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:50,310 INFO L231 Difference]: Finished difference. Result has 150 places, 178 transitions, 1346 flow [2024-06-28 03:17:50,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1346, PETRI_PLACES=150, PETRI_TRANSITIONS=178} [2024-06-28 03:17:50,310 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 105 predicate places. [2024-06-28 03:17:50,310 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 178 transitions, 1346 flow [2024-06-28 03:17:50,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:50,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:50,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:50,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:17:50,311 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 03:17:50,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash -841550779, now seen corresponding path program 1 times [2024-06-28 03:17:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:50,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965454517] [2024-06-28 03:17:50,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:51,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:51,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965454517] [2024-06-28 03:17:51,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965454517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:51,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:51,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:51,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275072273] [2024-06-28 03:17:51,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:51,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:51,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:51,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 178 transitions, 1346 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:17:51,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:51,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:51,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:51,920 INFO L124 PetriNetUnfolderBase]: 3190/4768 cut-off events. [2024-06-28 03:17:51,920 INFO L125 PetriNetUnfolderBase]: For 381507/381510 co-relation queries the response was YES. [2024-06-28 03:17:51,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36293 conditions, 4768 events. 3190/4768 cut-off events. For 381507/381510 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23301 event pairs, 1497 based on Foata normal form. 6/4763 useless extension candidates. Maximal degree in co-relation 36224. Up to 4614 conditions per place. [2024-06-28 03:17:51,961 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 159 selfloop transitions, 15 changer transitions 0/192 dead transitions. [2024-06-28 03:17:51,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 192 transitions, 1756 flow [2024-06-28 03:17:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 03:17:51,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-28 03:17:51,962 INFO L175 Difference]: Start difference. First operand has 150 places, 178 transitions, 1346 flow. Second operand 7 states and 118 transitions. [2024-06-28 03:17:51,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 192 transitions, 1756 flow [2024-06-28 03:17:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 192 transitions, 1681 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:52,192 INFO L231 Difference]: Finished difference. Result has 151 places, 181 transitions, 1349 flow [2024-06-28 03:17:52,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1349, PETRI_PLACES=151, PETRI_TRANSITIONS=181} [2024-06-28 03:17:52,192 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 106 predicate places. [2024-06-28 03:17:52,192 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 181 transitions, 1349 flow [2024-06-28 03:17:52,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:17:52,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:52,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:17:52,193 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:52,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1145893924, now seen corresponding path program 1 times [2024-06-28 03:17:52,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:52,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821342266] [2024-06-28 03:17:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:52,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821342266] [2024-06-28 03:17:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821342266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467485332] [2024-06-28 03:17:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:53,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:53,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:53,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:53,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 181 transitions, 1349 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:53,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:53,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:53,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:54,411 INFO L124 PetriNetUnfolderBase]: 3341/5094 cut-off events. [2024-06-28 03:17:54,412 INFO L125 PetriNetUnfolderBase]: For 392792/392798 co-relation queries the response was YES. [2024-06-28 03:17:54,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38279 conditions, 5094 events. 3341/5094 cut-off events. For 392792/392798 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 26570 event pairs, 923 based on Foata normal form. 8/5091 useless extension candidates. Maximal degree in co-relation 38209. Up to 4307 conditions per place. [2024-06-28 03:17:54,458 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 199 selfloop transitions, 93 changer transitions 0/299 dead transitions. [2024-06-28 03:17:54,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 299 transitions, 2758 flow [2024-06-28 03:17:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:17:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:17:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 03:17:54,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-28 03:17:54,460 INFO L175 Difference]: Start difference. First operand has 151 places, 181 transitions, 1349 flow. Second operand 10 states and 203 transitions. [2024-06-28 03:17:54,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 299 transitions, 2758 flow [2024-06-28 03:17:54,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 299 transitions, 2702 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:54,732 INFO L231 Difference]: Finished difference. Result has 160 places, 242 transitions, 2075 flow [2024-06-28 03:17:54,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2075, PETRI_PLACES=160, PETRI_TRANSITIONS=242} [2024-06-28 03:17:54,732 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 115 predicate places. [2024-06-28 03:17:54,732 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 242 transitions, 2075 flow [2024-06-28 03:17:54,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:54,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:54,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:54,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:17:54,733 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:54,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1318670794, now seen corresponding path program 2 times [2024-06-28 03:17:54,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:54,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810336425] [2024-06-28 03:17:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:54,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810336425] [2024-06-28 03:17:55,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810336425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:55,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:55,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:55,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533748699] [2024-06-28 03:17:55,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:55,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:55,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:55,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:55,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:55,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:55,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 242 transitions, 2075 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:55,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:55,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:55,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:56,808 INFO L124 PetriNetUnfolderBase]: 3443/5253 cut-off events. [2024-06-28 03:17:56,808 INFO L125 PetriNetUnfolderBase]: For 414962/414972 co-relation queries the response was YES. [2024-06-28 03:17:56,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40765 conditions, 5253 events. 3443/5253 cut-off events. For 414962/414972 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 27557 event pairs, 930 based on Foata normal form. 12/5259 useless extension candidates. Maximal degree in co-relation 40690. Up to 4526 conditions per place. [2024-06-28 03:17:56,854 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 206 selfloop transitions, 109 changer transitions 0/322 dead transitions. [2024-06-28 03:17:56,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 322 transitions, 3358 flow [2024-06-28 03:17:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-28 03:17:56,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-06-28 03:17:56,856 INFO L175 Difference]: Start difference. First operand has 160 places, 242 transitions, 2075 flow. Second operand 11 states and 221 transitions. [2024-06-28 03:17:56,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 322 transitions, 3358 flow [2024-06-28 03:17:57,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 322 transitions, 3277 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 03:17:57,304 INFO L231 Difference]: Finished difference. Result has 173 places, 267 transitions, 2577 flow [2024-06-28 03:17:57,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2577, PETRI_PLACES=173, PETRI_TRANSITIONS=267} [2024-06-28 03:17:57,304 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 128 predicate places. [2024-06-28 03:17:57,304 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 267 transitions, 2577 flow [2024-06-28 03:17:57,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:57,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:57,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:57,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:17:57,309 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:57,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1318674514, now seen corresponding path program 3 times [2024-06-28 03:17:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324947752] [2024-06-28 03:17:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:58,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324947752] [2024-06-28 03:17:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324947752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:58,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109769563] [2024-06-28 03:17:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:58,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:58,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:58,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 267 transitions, 2577 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:58,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:58,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:58,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:59,377 INFO L124 PetriNetUnfolderBase]: 3435/5241 cut-off events. [2024-06-28 03:17:59,378 INFO L125 PetriNetUnfolderBase]: For 429778/429788 co-relation queries the response was YES. [2024-06-28 03:17:59,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41506 conditions, 5241 events. 3435/5241 cut-off events. For 429778/429788 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 27461 event pairs, 933 based on Foata normal form. 12/5247 useless extension candidates. Maximal degree in co-relation 41425. Up to 4589 conditions per place. [2024-06-28 03:17:59,425 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 210 selfloop transitions, 106 changer transitions 0/323 dead transitions. [2024-06-28 03:17:59,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 323 transitions, 3442 flow [2024-06-28 03:17:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:17:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:17:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-06-28 03:17:59,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:17:59,426 INFO L175 Difference]: Start difference. First operand has 173 places, 267 transitions, 2577 flow. Second operand 12 states and 234 transitions. [2024-06-28 03:17:59,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 323 transitions, 3442 flow [2024-06-28 03:17:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 323 transitions, 3293 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:59,822 INFO L231 Difference]: Finished difference. Result has 182 places, 270 transitions, 2692 flow [2024-06-28 03:17:59,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2692, PETRI_PLACES=182, PETRI_TRANSITIONS=270} [2024-06-28 03:17:59,822 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 137 predicate places. [2024-06-28 03:17:59,822 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 270 transitions, 2692 flow [2024-06-28 03:17:59,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:59,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:59,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:59,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:17:59,823 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:59,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 276379963, now seen corresponding path program 1 times [2024-06-28 03:17:59,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:59,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111040963] [2024-06-28 03:17:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:00,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:00,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111040963] [2024-06-28 03:18:00,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111040963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:00,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:00,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:00,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405241348] [2024-06-28 03:18:00,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:00,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:00,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:00,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 270 transitions, 2692 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:00,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:00,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:00,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:02,132 INFO L124 PetriNetUnfolderBase]: 3718/5690 cut-off events. [2024-06-28 03:18:02,132 INFO L125 PetriNetUnfolderBase]: For 452235/452245 co-relation queries the response was YES. [2024-06-28 03:18:02,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44111 conditions, 5690 events. 3718/5690 cut-off events. For 452235/452245 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 30517 event pairs, 923 based on Foata normal form. 12/5699 useless extension candidates. Maximal degree in co-relation 44026. Up to 4579 conditions per place. [2024-06-28 03:18:02,185 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 243 selfloop transitions, 146 changer transitions 0/396 dead transitions. [2024-06-28 03:18:02,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 396 transitions, 4277 flow [2024-06-28 03:18:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:18:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:18:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 262 transitions. [2024-06-28 03:18:02,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458041958041958 [2024-06-28 03:18:02,187 INFO L175 Difference]: Start difference. First operand has 182 places, 270 transitions, 2692 flow. Second operand 13 states and 262 transitions. [2024-06-28 03:18:02,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 396 transitions, 4277 flow [2024-06-28 03:18:02,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 396 transitions, 4074 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:02,538 INFO L231 Difference]: Finished difference. Result has 190 places, 326 transitions, 3294 flow [2024-06-28 03:18:02,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3294, PETRI_PLACES=190, PETRI_TRANSITIONS=326} [2024-06-28 03:18:02,538 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 145 predicate places. [2024-06-28 03:18:02,538 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 326 transitions, 3294 flow [2024-06-28 03:18:02,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:02,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:02,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:18:02,539 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 03:18:02,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:02,539 INFO L85 PathProgramCache]: Analyzing trace with hash 391626997, now seen corresponding path program 1 times [2024-06-28 03:18:02,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:02,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343196038] [2024-06-28 03:18:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:02,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:03,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343196038] [2024-06-28 03:18:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343196038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:03,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:03,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762731918] [2024-06-28 03:18:03,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:03,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:03,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:03,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:03,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 326 transitions, 3294 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:03,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:03,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:03,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:04,494 INFO L124 PetriNetUnfolderBase]: 3907/5935 cut-off events. [2024-06-28 03:18:04,495 INFO L125 PetriNetUnfolderBase]: For 487897/487907 co-relation queries the response was YES. [2024-06-28 03:18:04,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47729 conditions, 5935 events. 3907/5935 cut-off events. For 487897/487907 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 31219 event pairs, 1034 based on Foata normal form. 11/5940 useless extension candidates. Maximal degree in co-relation 47640. Up to 5288 conditions per place. [2024-06-28 03:18:04,555 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 279 selfloop transitions, 52 changer transitions 0/371 dead transitions. [2024-06-28 03:18:04,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 371 transitions, 4474 flow [2024-06-28 03:18:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 03:18:04,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 03:18:04,556 INFO L175 Difference]: Start difference. First operand has 190 places, 326 transitions, 3294 flow. Second operand 8 states and 163 transitions. [2024-06-28 03:18:04,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 371 transitions, 4474 flow [2024-06-28 03:18:05,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 371 transitions, 4379 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:05,068 INFO L231 Difference]: Finished difference. Result has 195 places, 345 transitions, 3617 flow [2024-06-28 03:18:05,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3200, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3617, PETRI_PLACES=195, PETRI_TRANSITIONS=345} [2024-06-28 03:18:05,069 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 150 predicate places. [2024-06-28 03:18:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 345 transitions, 3617 flow [2024-06-28 03:18:05,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:05,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:05,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:05,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:18:05,070 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 03:18:05,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash 608087543, now seen corresponding path program 2 times [2024-06-28 03:18:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:05,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230135674] [2024-06-28 03:18:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:05,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:05,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230135674] [2024-06-28 03:18:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230135674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:05,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:05,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97949279] [2024-06-28 03:18:05,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:05,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:05,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:05,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:05,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 345 transitions, 3617 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:18:05,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:05,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:05,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:06,979 INFO L124 PetriNetUnfolderBase]: 3963/6021 cut-off events. [2024-06-28 03:18:06,979 INFO L125 PetriNetUnfolderBase]: For 513801/513813 co-relation queries the response was YES. [2024-06-28 03:18:07,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49968 conditions, 6021 events. 3963/6021 cut-off events. For 513801/513813 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 31828 event pairs, 1233 based on Foata normal form. 13/6028 useless extension candidates. Maximal degree in co-relation 49874. Up to 5342 conditions per place. [2024-06-28 03:18:07,038 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 288 selfloop transitions, 71 changer transitions 0/399 dead transitions. [2024-06-28 03:18:07,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 399 transitions, 5141 flow [2024-06-28 03:18:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:18:07,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:18:07,047 INFO L175 Difference]: Start difference. First operand has 195 places, 345 transitions, 3617 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:18:07,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 399 transitions, 5141 flow [2024-06-28 03:18:07,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 399 transitions, 5008 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-06-28 03:18:07,590 INFO L231 Difference]: Finished difference. Result has 204 places, 374 transitions, 4153 flow [2024-06-28 03:18:07,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3546, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4153, PETRI_PLACES=204, PETRI_TRANSITIONS=374} [2024-06-28 03:18:07,591 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 159 predicate places. [2024-06-28 03:18:07,591 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 374 transitions, 4153 flow [2024-06-28 03:18:07,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:18:07,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:07,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:07,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:18:07,592 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 03:18:07,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:07,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1379134180, now seen corresponding path program 4 times [2024-06-28 03:18:07,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:07,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247096001] [2024-06-28 03:18:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:08,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:08,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247096001] [2024-06-28 03:18:08,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247096001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:08,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:08,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:08,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354173555] [2024-06-28 03:18:08,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:08,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:08,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:08,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:08,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:08,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 374 transitions, 4153 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:08,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:08,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:08,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:09,795 INFO L124 PetriNetUnfolderBase]: 4075/6268 cut-off events. [2024-06-28 03:18:09,796 INFO L125 PetriNetUnfolderBase]: For 532430/532443 co-relation queries the response was YES. [2024-06-28 03:18:09,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51839 conditions, 6268 events. 4075/6268 cut-off events. For 532430/532443 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 34641 event pairs, 869 based on Foata normal form. 14/6273 useless extension candidates. Maximal degree in co-relation 51740. Up to 4726 conditions per place. [2024-06-28 03:18:09,860 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 273 selfloop transitions, 174 changer transitions 0/454 dead transitions. [2024-06-28 03:18:09,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 454 transitions, 5873 flow [2024-06-28 03:18:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 03:18:09,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-28 03:18:09,862 INFO L175 Difference]: Start difference. First operand has 204 places, 374 transitions, 4153 flow. Second operand 10 states and 204 transitions. [2024-06-28 03:18:09,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 454 transitions, 5873 flow [2024-06-28 03:18:10,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 454 transitions, 5775 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 03:18:10,533 INFO L231 Difference]: Finished difference. Result has 214 places, 406 transitions, 4846 flow [2024-06-28 03:18:10,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4055, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4846, PETRI_PLACES=214, PETRI_TRANSITIONS=406} [2024-06-28 03:18:10,534 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 169 predicate places. [2024-06-28 03:18:10,534 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 406 transitions, 4846 flow [2024-06-28 03:18:10,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:10,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:10,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:10,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:18:10,535 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 03:18:10,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1114523894, now seen corresponding path program 5 times [2024-06-28 03:18:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104986438] [2024-06-28 03:18:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:11,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104986438] [2024-06-28 03:18:11,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104986438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:11,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:11,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206812332] [2024-06-28 03:18:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:11,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:11,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:11,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:11,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 406 transitions, 4846 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:11,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:11,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:11,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:12,832 INFO L124 PetriNetUnfolderBase]: 4355/6698 cut-off events. [2024-06-28 03:18:12,832 INFO L125 PetriNetUnfolderBase]: For 565830/565850 co-relation queries the response was YES. [2024-06-28 03:18:12,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55966 conditions, 6698 events. 4355/6698 cut-off events. For 565830/565850 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 37603 event pairs, 1051 based on Foata normal form. 22/6706 useless extension candidates. Maximal degree in co-relation 55863. Up to 5186 conditions per place. [2024-06-28 03:18:12,908 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 296 selfloop transitions, 197 changer transitions 0/500 dead transitions. [2024-06-28 03:18:12,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 500 transitions, 6862 flow [2024-06-28 03:18:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:18:12,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 03:18:12,910 INFO L175 Difference]: Start difference. First operand has 214 places, 406 transitions, 4846 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:18:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 500 transitions, 6862 flow [2024-06-28 03:18:13,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 500 transitions, 6509 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:13,819 INFO L231 Difference]: Finished difference. Result has 222 places, 456 transitions, 5720 flow [2024-06-28 03:18:13,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5720, PETRI_PLACES=222, PETRI_TRANSITIONS=456} [2024-06-28 03:18:13,820 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 177 predicate places. [2024-06-28 03:18:13,820 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 456 transitions, 5720 flow [2024-06-28 03:18:13,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:13,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:13,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:13,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:18:13,821 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 03:18:13,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1295176390, now seen corresponding path program 6 times [2024-06-28 03:18:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:13,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872584731] [2024-06-28 03:18:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:14,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:14,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872584731] [2024-06-28 03:18:14,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872584731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:14,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:14,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:14,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082387352] [2024-06-28 03:18:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:14,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:14,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:14,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 456 transitions, 5720 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:14,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:14,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:16,086 INFO L124 PetriNetUnfolderBase]: 4424/6806 cut-off events. [2024-06-28 03:18:16,086 INFO L125 PetriNetUnfolderBase]: For 587878/587906 co-relation queries the response was YES. [2024-06-28 03:18:16,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58130 conditions, 6806 events. 4424/6806 cut-off events. For 587878/587906 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 38220 event pairs, 1066 based on Foata normal form. 30/6827 useless extension candidates. Maximal degree in co-relation 58022. Up to 5666 conditions per place. [2024-06-28 03:18:16,163 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 321 selfloop transitions, 181 changer transitions 0/509 dead transitions. [2024-06-28 03:18:16,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 509 transitions, 7297 flow [2024-06-28 03:18:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-28 03:18:16,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-28 03:18:16,177 INFO L175 Difference]: Start difference. First operand has 222 places, 456 transitions, 5720 flow. Second operand 9 states and 186 transitions. [2024-06-28 03:18:16,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 509 transitions, 7297 flow [2024-06-28 03:18:16,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 509 transitions, 7157 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:16,978 INFO L231 Difference]: Finished difference. Result has 229 places, 470 transitions, 6282 flow [2024-06-28 03:18:16,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5584, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6282, PETRI_PLACES=229, PETRI_TRANSITIONS=470} [2024-06-28 03:18:16,993 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 184 predicate places. [2024-06-28 03:18:16,993 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 470 transitions, 6282 flow [2024-06-28 03:18:16,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:16,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:16,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:16,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:18:16,994 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:16,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1114433529, now seen corresponding path program 2 times [2024-06-28 03:18:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401401943] [2024-06-28 03:18:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:16,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:17,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401401943] [2024-06-28 03:18:17,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401401943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:17,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:17,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:17,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721167745] [2024-06-28 03:18:17,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:17,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:17,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:17,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:17,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:17,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:17,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 470 transitions, 6282 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:17,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:17,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:17,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:19,511 INFO L124 PetriNetUnfolderBase]: 4567/7036 cut-off events. [2024-06-28 03:18:19,512 INFO L125 PetriNetUnfolderBase]: For 597153/597181 co-relation queries the response was YES. [2024-06-28 03:18:19,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60478 conditions, 7036 events. 4567/7036 cut-off events. For 597153/597181 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 39934 event pairs, 1063 based on Foata normal form. 28/7060 useless extension candidates. Maximal degree in co-relation 60368. Up to 5228 conditions per place. [2024-06-28 03:18:19,589 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 326 selfloop transitions, 224 changer transitions 0/557 dead transitions. [2024-06-28 03:18:19,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 557 transitions, 8421 flow [2024-06-28 03:18:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 03:18:19,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49747474747474746 [2024-06-28 03:18:19,591 INFO L175 Difference]: Start difference. First operand has 229 places, 470 transitions, 6282 flow. Second operand 9 states and 197 transitions. [2024-06-28 03:18:19,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 557 transitions, 8421 flow [2024-06-28 03:18:20,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 557 transitions, 8201 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:20,273 INFO L231 Difference]: Finished difference. Result has 235 places, 501 transitions, 6960 flow [2024-06-28 03:18:20,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6070, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6960, PETRI_PLACES=235, PETRI_TRANSITIONS=501} [2024-06-28 03:18:20,273 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 190 predicate places. [2024-06-28 03:18:20,273 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 501 transitions, 6960 flow [2024-06-28 03:18:20,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:20,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:20,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:20,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:18:20,274 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:20,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2055122016, now seen corresponding path program 7 times [2024-06-28 03:18:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:20,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984575771] [2024-06-28 03:18:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984575771] [2024-06-28 03:18:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984575771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:21,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:21,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281240762] [2024-06-28 03:18:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:21,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:21,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 501 transitions, 6960 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:21,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:21,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:21,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:22,814 INFO L124 PetriNetUnfolderBase]: 4544/6993 cut-off events. [2024-06-28 03:18:22,815 INFO L125 PetriNetUnfolderBase]: For 592561/592589 co-relation queries the response was YES. [2024-06-28 03:18:22,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61542 conditions, 6993 events. 4544/6993 cut-off events. For 592561/592589 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 39436 event pairs, 1117 based on Foata normal form. 30/7017 useless extension candidates. Maximal degree in co-relation 61429. Up to 6008 conditions per place. [2024-06-28 03:18:22,897 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 361 selfloop transitions, 168 changer transitions 0/536 dead transitions. [2024-06-28 03:18:22,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 536 transitions, 8193 flow [2024-06-28 03:18:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:18:22,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 03:18:22,898 INFO L175 Difference]: Start difference. First operand has 235 places, 501 transitions, 6960 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:18:22,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 536 transitions, 8193 flow [2024-06-28 03:18:23,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 536 transitions, 8028 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:23,643 INFO L231 Difference]: Finished difference. Result has 240 places, 501 transitions, 7155 flow [2024-06-28 03:18:23,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6803, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7155, PETRI_PLACES=240, PETRI_TRANSITIONS=501} [2024-06-28 03:18:23,644 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 195 predicate places. [2024-06-28 03:18:23,644 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 501 transitions, 7155 flow [2024-06-28 03:18:23,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:18:23,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:23,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:23,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:18:23,645 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:23,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:23,645 INFO L85 PathProgramCache]: Analyzing trace with hash 113089226, now seen corresponding path program 8 times [2024-06-28 03:18:23,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:23,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339009003] [2024-06-28 03:18:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:24,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339009003] [2024-06-28 03:18:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339009003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:24,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:24,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:24,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123654683] [2024-06-28 03:18:24,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:24,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:24,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:24,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:24,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 501 transitions, 7155 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:24,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:24,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:24,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:26,486 INFO L124 PetriNetUnfolderBase]: 4696/7234 cut-off events. [2024-06-28 03:18:26,487 INFO L125 PetriNetUnfolderBase]: For 597644/597656 co-relation queries the response was YES. [2024-06-28 03:18:26,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63731 conditions, 7234 events. 4696/7234 cut-off events. For 597644/597656 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 41302 event pairs, 1331 based on Foata normal form. 16/7244 useless extension candidates. Maximal degree in co-relation 63617. Up to 6381 conditions per place. [2024-06-28 03:18:26,571 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 457 selfloop transitions, 115 changer transitions 0/579 dead transitions. [2024-06-28 03:18:26,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 579 transitions, 9365 flow [2024-06-28 03:18:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:18:26,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-28 03:18:26,572 INFO L175 Difference]: Start difference. First operand has 240 places, 501 transitions, 7155 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:18:26,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 579 transitions, 9365 flow [2024-06-28 03:18:27,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 579 transitions, 8980 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:27,377 INFO L231 Difference]: Finished difference. Result has 245 places, 539 transitions, 7852 flow [2024-06-28 03:18:27,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6816, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7852, PETRI_PLACES=245, PETRI_TRANSITIONS=539} [2024-06-28 03:18:27,377 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 200 predicate places. [2024-06-28 03:18:27,377 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 539 transitions, 7852 flow [2024-06-28 03:18:27,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:27,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:27,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:18:27,378 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:27,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -690370324, now seen corresponding path program 9 times [2024-06-28 03:18:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769468676] [2024-06-28 03:18:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:28,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769468676] [2024-06-28 03:18:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769468676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:28,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587504747] [2024-06-28 03:18:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:28,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:28,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:28,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 539 transitions, 7852 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:28,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:28,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:28,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:30,258 INFO L124 PetriNetUnfolderBase]: 4724/7282 cut-off events. [2024-06-28 03:18:30,259 INFO L125 PetriNetUnfolderBase]: For 598829/598841 co-relation queries the response was YES. [2024-06-28 03:18:30,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64360 conditions, 7282 events. 4724/7282 cut-off events. For 598829/598841 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 41659 event pairs, 1348 based on Foata normal form. 16/7292 useless extension candidates. Maximal degree in co-relation 64243. Up to 6532 conditions per place. [2024-06-28 03:18:30,347 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 467 selfloop transitions, 109 changer transitions 0/583 dead transitions. [2024-06-28 03:18:30,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 583 transitions, 9283 flow [2024-06-28 03:18:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 03:18:30,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-06-28 03:18:30,348 INFO L175 Difference]: Start difference. First operand has 245 places, 539 transitions, 7852 flow. Second operand 11 states and 218 transitions. [2024-06-28 03:18:30,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 583 transitions, 9283 flow [2024-06-28 03:18:31,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 583 transitions, 9177 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 03:18:31,306 INFO L231 Difference]: Finished difference. Result has 254 places, 544 transitions, 8109 flow [2024-06-28 03:18:31,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7754, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8109, PETRI_PLACES=254, PETRI_TRANSITIONS=544} [2024-06-28 03:18:31,307 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 209 predicate places. [2024-06-28 03:18:31,307 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 544 transitions, 8109 flow [2024-06-28 03:18:31,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:31,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:31,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:31,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:18:31,308 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:31,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash -690370169, now seen corresponding path program 3 times [2024-06-28 03:18:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:31,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361843912] [2024-06-28 03:18:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:31,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361843912] [2024-06-28 03:18:32,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361843912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:32,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:32,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094681514] [2024-06-28 03:18:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:32,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:32,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:32,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:32,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 544 transitions, 8109 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:32,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:32,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:32,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:34,228 INFO L124 PetriNetUnfolderBase]: 4850/7473 cut-off events. [2024-06-28 03:18:34,229 INFO L125 PetriNetUnfolderBase]: For 621614/621626 co-relation queries the response was YES. [2024-06-28 03:18:34,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66306 conditions, 7473 events. 4850/7473 cut-off events. For 621614/621626 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 43040 event pairs, 1320 based on Foata normal form. 14/7484 useless extension candidates. Maximal degree in co-relation 66186. Up to 6285 conditions per place. [2024-06-28 03:18:34,327 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 448 selfloop transitions, 170 changer transitions 0/625 dead transitions. [2024-06-28 03:18:34,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 625 transitions, 10085 flow [2024-06-28 03:18:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:18:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:18:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 247 transitions. [2024-06-28 03:18:34,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678030303030303 [2024-06-28 03:18:34,329 INFO L175 Difference]: Start difference. First operand has 254 places, 544 transitions, 8109 flow. Second operand 12 states and 247 transitions. [2024-06-28 03:18:34,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 625 transitions, 10085 flow [2024-06-28 03:18:35,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 625 transitions, 9839 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:35,383 INFO L231 Difference]: Finished difference. Result has 260 places, 572 transitions, 8588 flow [2024-06-28 03:18:35,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7863, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8588, PETRI_PLACES=260, PETRI_TRANSITIONS=572} [2024-06-28 03:18:35,384 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 215 predicate places. [2024-06-28 03:18:35,384 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 572 transitions, 8588 flow [2024-06-28 03:18:35,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:35,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:35,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:18:35,384 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:35,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash -684656249, now seen corresponding path program 4 times [2024-06-28 03:18:35,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:35,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616415366] [2024-06-28 03:18:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:35,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616415366] [2024-06-28 03:18:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616415366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:36,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114842241] [2024-06-28 03:18:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:36,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:36,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:36,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:36,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 572 transitions, 8588 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:36,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:36,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:36,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:38,341 INFO L124 PetriNetUnfolderBase]: 5005/7719 cut-off events. [2024-06-28 03:18:38,341 INFO L125 PetriNetUnfolderBase]: For 647869/647891 co-relation queries the response was YES. [2024-06-28 03:18:38,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69169 conditions, 7719 events. 5005/7719 cut-off events. For 647869/647891 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44844 event pairs, 1290 based on Foata normal form. 24/7739 useless extension candidates. Maximal degree in co-relation 69047. Up to 6533 conditions per place. [2024-06-28 03:18:38,449 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 466 selfloop transitions, 171 changer transitions 0/644 dead transitions. [2024-06-28 03:18:38,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 644 transitions, 10583 flow [2024-06-28 03:18:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 03:18:38,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-28 03:18:38,451 INFO L175 Difference]: Start difference. First operand has 260 places, 572 transitions, 8588 flow. Second operand 10 states and 204 transitions. [2024-06-28 03:18:38,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 644 transitions, 10583 flow [2024-06-28 03:18:39,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 644 transitions, 10483 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:39,531 INFO L231 Difference]: Finished difference. Result has 268 places, 602 transitions, 9400 flow [2024-06-28 03:18:39,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8490, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9400, PETRI_PLACES=268, PETRI_TRANSITIONS=602} [2024-06-28 03:18:39,533 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 223 predicate places. [2024-06-28 03:18:39,533 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 602 transitions, 9400 flow [2024-06-28 03:18:39,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:39,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:39,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:18:39,533 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:39,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash -684863639, now seen corresponding path program 5 times [2024-06-28 03:18:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114982758] [2024-06-28 03:18:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:40,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114982758] [2024-06-28 03:18:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114982758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:40,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:40,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471591761] [2024-06-28 03:18:40,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:40,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:40,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 602 transitions, 9400 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:40,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:40,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:40,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:42,633 INFO L124 PetriNetUnfolderBase]: 5008/7714 cut-off events. [2024-06-28 03:18:42,633 INFO L125 PetriNetUnfolderBase]: For 668131/668153 co-relation queries the response was YES. [2024-06-28 03:18:42,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70505 conditions, 7714 events. 5008/7714 cut-off events. For 668131/668153 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44745 event pairs, 1322 based on Foata normal form. 24/7737 useless extension candidates. Maximal degree in co-relation 70379. Up to 6522 conditions per place. [2024-06-28 03:18:42,730 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 474 selfloop transitions, 175 changer transitions 0/656 dead transitions. [2024-06-28 03:18:42,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 656 transitions, 11089 flow [2024-06-28 03:18:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-28 03:18:42,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-06-28 03:18:42,731 INFO L175 Difference]: Start difference. First operand has 268 places, 602 transitions, 9400 flow. Second operand 11 states and 225 transitions. [2024-06-28 03:18:42,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 656 transitions, 11089 flow [2024-06-28 03:18:43,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 656 transitions, 10854 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:43,758 INFO L231 Difference]: Finished difference. Result has 277 places, 610 transitions, 9742 flow [2024-06-28 03:18:43,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9165, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9742, PETRI_PLACES=277, PETRI_TRANSITIONS=610} [2024-06-28 03:18:43,759 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-28 03:18:43,759 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 610 transitions, 9742 flow [2024-06-28 03:18:43,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:43,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:43,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:43,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:18:43,760 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:43,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1810275390, now seen corresponding path program 10 times [2024-06-28 03:18:43,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769256801] [2024-06-28 03:18:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:43,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:44,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:44,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769256801] [2024-06-28 03:18:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769256801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:44,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:44,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750958238] [2024-06-28 03:18:44,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:44,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:44,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:44,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:44,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:44,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:44,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 610 transitions, 9742 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:44,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:44,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:44,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:46,980 INFO L124 PetriNetUnfolderBase]: 5011/7723 cut-off events. [2024-06-28 03:18:46,981 INFO L125 PetriNetUnfolderBase]: For 690699/690721 co-relation queries the response was YES. [2024-06-28 03:18:47,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71056 conditions, 7723 events. 5011/7723 cut-off events. For 690699/690721 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44810 event pairs, 1361 based on Foata normal form. 26/7748 useless extension candidates. Maximal degree in co-relation 70927. Up to 6981 conditions per place. [2024-06-28 03:18:47,085 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 534 selfloop transitions, 104 changer transitions 0/645 dead transitions. [2024-06-28 03:18:47,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 645 transitions, 11210 flow [2024-06-28 03:18:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:18:47,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 03:18:47,087 INFO L175 Difference]: Start difference. First operand has 277 places, 610 transitions, 9742 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:18:47,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 645 transitions, 11210 flow [2024-06-28 03:18:48,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 645 transitions, 10888 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:48,200 INFO L231 Difference]: Finished difference. Result has 282 places, 612 transitions, 9693 flow [2024-06-28 03:18:48,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9420, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9693, PETRI_PLACES=282, PETRI_TRANSITIONS=612} [2024-06-28 03:18:48,201 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 237 predicate places. [2024-06-28 03:18:48,201 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 612 transitions, 9693 flow [2024-06-28 03:18:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:48,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:48,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:48,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:18:48,201 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 03:18:48,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash 608445593, now seen corresponding path program 3 times [2024-06-28 03:18:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:48,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089698139] [2024-06-28 03:18:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:48,843 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 03:18:48,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:48,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089698139] [2024-06-28 03:18:48,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089698139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:48,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:48,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:48,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428467919] [2024-06-28 03:18:48,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:48,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:48,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:48,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:48,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 612 transitions, 9693 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:18:48,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:48,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:48,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:50,644 INFO L124 PetriNetUnfolderBase]: 5222/8002 cut-off events. [2024-06-28 03:18:50,644 INFO L125 PetriNetUnfolderBase]: For 725200/725226 co-relation queries the response was YES. [2024-06-28 03:18:50,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72569 conditions, 8002 events. 5222/8002 cut-off events. For 725200/725226 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 45788 event pairs, 1528 based on Foata normal form. 27/8016 useless extension candidates. Maximal degree in co-relation 72439. Up to 7083 conditions per place. [2024-06-28 03:18:50,748 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 483 selfloop transitions, 68 changer transitions 0/633 dead transitions. [2024-06-28 03:18:50,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 633 transitions, 11104 flow [2024-06-28 03:18:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:18:50,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 03:18:50,750 INFO L175 Difference]: Start difference. First operand has 282 places, 612 transitions, 9693 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:18:50,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 633 transitions, 11104 flow [2024-06-28 03:18:51,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 633 transitions, 10835 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:51,939 INFO L231 Difference]: Finished difference. Result has 282 places, 612 transitions, 9568 flow [2024-06-28 03:18:51,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9424, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9568, PETRI_PLACES=282, PETRI_TRANSITIONS=612} [2024-06-28 03:18:51,940 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 237 predicate places. [2024-06-28 03:18:51,940 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 612 transitions, 9568 flow [2024-06-28 03:18:51,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:18:51,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:51,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:51,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:18:51,940 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 03:18:51,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash 608446027, now seen corresponding path program 1 times [2024-06-28 03:18:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:51,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974114439] [2024-06-28 03:18:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:51,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:52,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:52,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974114439] [2024-06-28 03:18:52,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974114439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:52,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:52,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030777476] [2024-06-28 03:18:52,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:52,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:52,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:52,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:52,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 612 transitions, 9568 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:18:52,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:52,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:52,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:54,507 INFO L124 PetriNetUnfolderBase]: 5424/8209 cut-off events. [2024-06-28 03:18:54,507 INFO L125 PetriNetUnfolderBase]: For 744214/744220 co-relation queries the response was YES. [2024-06-28 03:18:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73696 conditions, 8209 events. 5424/8209 cut-off events. For 744214/744220 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 46081 event pairs, 1821 based on Foata normal form. 7/8207 useless extension candidates. Maximal degree in co-relation 73566. Up to 7640 conditions per place. [2024-06-28 03:18:54,608 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 529 selfloop transitions, 30 changer transitions 0/639 dead transitions. [2024-06-28 03:18:54,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 639 transitions, 11006 flow [2024-06-28 03:18:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:18:54,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:18:54,609 INFO L175 Difference]: Start difference. First operand has 282 places, 612 transitions, 9568 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:18:54,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 639 transitions, 11006 flow [2024-06-28 03:18:55,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 639 transitions, 10896 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:55,784 INFO L231 Difference]: Finished difference. Result has 287 places, 620 transitions, 9679 flow [2024-06-28 03:18:55,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9459, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9679, PETRI_PLACES=287, PETRI_TRANSITIONS=620} [2024-06-28 03:18:55,785 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 242 predicate places. [2024-06-28 03:18:55,785 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 620 transitions, 9679 flow [2024-06-28 03:18:55,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:18:55,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:55,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:55,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:18:55,786 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 03:18:55,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1375289610, now seen corresponding path program 11 times [2024-06-28 03:18:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:55,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652226502] [2024-06-28 03:18:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:55,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:56,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:56,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652226502] [2024-06-28 03:18:56,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652226502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:56,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:56,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501386215] [2024-06-28 03:18:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:56,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:56,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:56,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 620 transitions, 9679 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:56,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:56,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:56,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:58,586 INFO L124 PetriNetUnfolderBase]: 5049/7752 cut-off events. [2024-06-28 03:18:58,586 INFO L125 PetriNetUnfolderBase]: For 758404/758436 co-relation queries the response was YES. [2024-06-28 03:18:58,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72012 conditions, 7752 events. 5049/7752 cut-off events. For 758404/758436 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 44914 event pairs, 1035 based on Foata normal form. 34/7774 useless extension candidates. Maximal degree in co-relation 71880. Up to 5611 conditions per place. [2024-06-28 03:18:58,688 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 358 selfloop transitions, 294 changer transitions 0/661 dead transitions. [2024-06-28 03:18:58,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 661 transitions, 11437 flow [2024-06-28 03:18:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:18:58,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 03:18:58,691 INFO L175 Difference]: Start difference. First operand has 287 places, 620 transitions, 9679 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:18:58,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 661 transitions, 11437 flow [2024-06-28 03:18:59,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 661 transitions, 11374 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 03:18:59,797 INFO L231 Difference]: Finished difference. Result has 294 places, 624 transitions, 10308 flow [2024-06-28 03:18:59,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9616, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10308, PETRI_PLACES=294, PETRI_TRANSITIONS=624} [2024-06-28 03:18:59,798 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 249 predicate places. [2024-06-28 03:18:59,798 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 624 transitions, 10308 flow [2024-06-28 03:18:59,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:59,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:59,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:18:59,799 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 03:18:59,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1377163560, now seen corresponding path program 12 times [2024-06-28 03:18:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:59,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024058428] [2024-06-28 03:18:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024058428] [2024-06-28 03:19:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024058428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:00,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709532172] [2024-06-28 03:19:00,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:00,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:00,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:01,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:01,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 624 transitions, 10308 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:01,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:01,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:01,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:02,678 INFO L124 PetriNetUnfolderBase]: 5195/8000 cut-off events. [2024-06-28 03:19:02,679 INFO L125 PetriNetUnfolderBase]: For 806017/806049 co-relation queries the response was YES. [2024-06-28 03:19:02,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76120 conditions, 8000 events. 5195/8000 cut-off events. For 806017/806049 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 46844 event pairs, 1310 based on Foata normal form. 36/8031 useless extension candidates. Maximal degree in co-relation 75986. Up to 6660 conditions per place. [2024-06-28 03:19:02,785 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 434 selfloop transitions, 236 changer transitions 0/679 dead transitions. [2024-06-28 03:19:02,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 679 transitions, 12443 flow [2024-06-28 03:19:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:19:02,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 03:19:02,786 INFO L175 Difference]: Start difference. First operand has 294 places, 624 transitions, 10308 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:19:02,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 679 transitions, 12443 flow [2024-06-28 03:19:04,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 679 transitions, 11902 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:04,141 INFO L231 Difference]: Finished difference. Result has 297 places, 644 transitions, 10752 flow [2024-06-28 03:19:04,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9795, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10752, PETRI_PLACES=297, PETRI_TRANSITIONS=644} [2024-06-28 03:19:04,142 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 252 predicate places. [2024-06-28 03:19:04,142 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 644 transitions, 10752 flow [2024-06-28 03:19:04,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:04,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:04,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:04,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:19:04,143 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 03:19:04,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:04,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1377167280, now seen corresponding path program 13 times [2024-06-28 03:19:04,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:04,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103817283] [2024-06-28 03:19:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:05,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:05,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103817283] [2024-06-28 03:19:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103817283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:05,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002900908] [2024-06-28 03:19:05,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:05,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:05,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:05,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 644 transitions, 10752 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:05,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:05,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:05,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:07,176 INFO L124 PetriNetUnfolderBase]: 5177/7975 cut-off events. [2024-06-28 03:19:07,176 INFO L125 PetriNetUnfolderBase]: For 770524/770556 co-relation queries the response was YES. [2024-06-28 03:19:07,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75075 conditions, 7975 events. 5177/7975 cut-off events. For 770524/770556 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 46697 event pairs, 1357 based on Foata normal form. 36/8006 useless extension candidates. Maximal degree in co-relation 74940. Up to 6852 conditions per place. [2024-06-28 03:19:07,288 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 453 selfloop transitions, 215 changer transitions 0/677 dead transitions. [2024-06-28 03:19:07,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 677 transitions, 12252 flow [2024-06-28 03:19:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 03:19:07,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-28 03:19:07,290 INFO L175 Difference]: Start difference. First operand has 297 places, 644 transitions, 10752 flow. Second operand 9 states and 179 transitions. [2024-06-28 03:19:07,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 677 transitions, 12252 flow [2024-06-28 03:19:08,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 677 transitions, 11909 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:08,565 INFO L231 Difference]: Finished difference. Result has 301 places, 644 transitions, 10861 flow [2024-06-28 03:19:08,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=10409, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10861, PETRI_PLACES=301, PETRI_TRANSITIONS=644} [2024-06-28 03:19:08,566 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 256 predicate places. [2024-06-28 03:19:08,566 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 644 transitions, 10861 flow [2024-06-28 03:19:08,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:08,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:08,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:08,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:19:08,566 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:08,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1377167435, now seen corresponding path program 6 times [2024-06-28 03:19:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091796088] [2024-06-28 03:19:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:09,731 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 03:19:09,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:09,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091796088] [2024-06-28 03:19:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091796088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:09,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980756398] [2024-06-28 03:19:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:09,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:09,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:09,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:09,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:09,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:09,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 644 transitions, 10861 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:09,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:09,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:09,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:11,888 INFO L124 PetriNetUnfolderBase]: 5253/8108 cut-off events. [2024-06-28 03:19:11,889 INFO L125 PetriNetUnfolderBase]: For 801038/801070 co-relation queries the response was YES. [2024-06-28 03:19:11,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77043 conditions, 8108 events. 5253/8108 cut-off events. For 801038/801070 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 47862 event pairs, 1323 based on Foata normal form. 36/8140 useless extension candidates. Maximal degree in co-relation 76906. Up to 5994 conditions per place. [2024-06-28 03:19:12,014 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 352 selfloop transitions, 356 changer transitions 0/717 dead transitions. [2024-06-28 03:19:12,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 717 transitions, 13178 flow [2024-06-28 03:19:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:19:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:19:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2024-06-28 03:19:12,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:19:12,020 INFO L175 Difference]: Start difference. First operand has 301 places, 644 transitions, 10861 flow. Second operand 12 states and 242 transitions. [2024-06-28 03:19:12,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 717 transitions, 13178 flow [2024-06-28 03:19:13,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 717 transitions, 12728 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:13,351 INFO L231 Difference]: Finished difference. Result has 305 places, 659 transitions, 11463 flow [2024-06-28 03:19:13,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=10411, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11463, PETRI_PLACES=305, PETRI_TRANSITIONS=659} [2024-06-28 03:19:13,361 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 260 predicate places. [2024-06-28 03:19:13,361 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 659 transitions, 11463 flow [2024-06-28 03:19:13,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:13,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:13,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:19:13,362 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:13,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1703616556, now seen corresponding path program 14 times [2024-06-28 03:19:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288112126] [2024-06-28 03:19:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:14,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:14,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288112126] [2024-06-28 03:19:14,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288112126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:14,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:14,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:14,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805909655] [2024-06-28 03:19:14,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:14,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:14,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:14,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 659 transitions, 11463 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:14,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:14,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:14,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:16,608 INFO L124 PetriNetUnfolderBase]: 5331/8229 cut-off events. [2024-06-28 03:19:16,608 INFO L125 PetriNetUnfolderBase]: For 833312/833334 co-relation queries the response was YES. [2024-06-28 03:19:16,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79275 conditions, 8229 events. 5331/8229 cut-off events. For 833312/833334 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 48643 event pairs, 1449 based on Foata normal form. 30/8248 useless extension candidates. Maximal degree in co-relation 79137. Up to 7397 conditions per place. [2024-06-28 03:19:16,726 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 571 selfloop transitions, 123 changer transitions 0/703 dead transitions. [2024-06-28 03:19:16,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 703 transitions, 13335 flow [2024-06-28 03:19:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:19:16,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:19:16,728 INFO L175 Difference]: Start difference. First operand has 305 places, 659 transitions, 11463 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:19:16,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 703 transitions, 13335 flow [2024-06-28 03:19:18,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 703 transitions, 12866 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:18,015 INFO L231 Difference]: Finished difference. Result has 306 places, 671 transitions, 11566 flow [2024-06-28 03:19:18,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=10994, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11566, PETRI_PLACES=306, PETRI_TRANSITIONS=671} [2024-06-28 03:19:18,016 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 261 predicate places. [2024-06-28 03:19:18,016 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 671 transitions, 11566 flow [2024-06-28 03:19:18,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:18,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:18,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:18,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:19:18,017 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:18,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:18,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1463859090, now seen corresponding path program 15 times [2024-06-28 03:19:18,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:18,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543284885] [2024-06-28 03:19:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543284885] [2024-06-28 03:19:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543284885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:19,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:19,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:19,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534020843] [2024-06-28 03:19:19,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:19,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:19,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:19,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 671 transitions, 11566 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:19,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:19,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:19,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:21,061 INFO L124 PetriNetUnfolderBase]: 5381/8309 cut-off events. [2024-06-28 03:19:21,061 INFO L125 PetriNetUnfolderBase]: For 856885/856907 co-relation queries the response was YES. [2024-06-28 03:19:21,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80349 conditions, 8309 events. 5381/8309 cut-off events. For 856885/856907 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 49219 event pairs, 1473 based on Foata normal form. 30/8333 useless extension candidates. Maximal degree in co-relation 80209. Up to 7422 conditions per place. [2024-06-28 03:19:21,189 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 561 selfloop transitions, 142 changer transitions 0/712 dead transitions. [2024-06-28 03:19:21,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 712 transitions, 13395 flow [2024-06-28 03:19:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:19:21,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 03:19:21,191 INFO L175 Difference]: Start difference. First operand has 306 places, 671 transitions, 11566 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:19:21,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 712 transitions, 13395 flow [2024-06-28 03:19:22,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 712 transitions, 13061 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:22,884 INFO L231 Difference]: Finished difference. Result has 308 places, 679 transitions, 11758 flow [2024-06-28 03:19:22,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11232, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11758, PETRI_PLACES=308, PETRI_TRANSITIONS=679} [2024-06-28 03:19:22,885 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 263 predicate places. [2024-06-28 03:19:22,885 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 679 transitions, 11758 flow [2024-06-28 03:19:22,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:22,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:22,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:22,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:19:22,885 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:22,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1463855370, now seen corresponding path program 16 times [2024-06-28 03:19:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:22,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360969023] [2024-06-28 03:19:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:22,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360969023] [2024-06-28 03:19:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360969023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640582864] [2024-06-28 03:19:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:24,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:24,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 679 transitions, 11758 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:24,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:24,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:24,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:25,906 INFO L124 PetriNetUnfolderBase]: 5431/8383 cut-off events. [2024-06-28 03:19:25,906 INFO L125 PetriNetUnfolderBase]: For 883302/883324 co-relation queries the response was YES. [2024-06-28 03:19:25,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81406 conditions, 8383 events. 5431/8383 cut-off events. For 883302/883324 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 49714 event pairs, 1447 based on Foata normal form. 30/8407 useless extension candidates. Maximal degree in co-relation 81265. Up to 7262 conditions per place. [2024-06-28 03:19:26,037 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 539 selfloop transitions, 172 changer transitions 0/720 dead transitions. [2024-06-28 03:19:26,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 720 transitions, 13600 flow [2024-06-28 03:19:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:19:26,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 03:19:26,039 INFO L175 Difference]: Start difference. First operand has 308 places, 679 transitions, 11758 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:19:26,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 720 transitions, 13600 flow [2024-06-28 03:19:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 720 transitions, 13172 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:27,850 INFO L231 Difference]: Finished difference. Result has 309 places, 687 transitions, 11930 flow [2024-06-28 03:19:27,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11330, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11930, PETRI_PLACES=309, PETRI_TRANSITIONS=687} [2024-06-28 03:19:27,850 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 264 predicate places. [2024-06-28 03:19:27,850 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 687 transitions, 11930 flow [2024-06-28 03:19:27,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:27,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:27,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:27,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:19:27,851 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 03:19:27,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -732426325, now seen corresponding path program 4 times [2024-06-28 03:19:27,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:27,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769892393] [2024-06-28 03:19:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:27,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:28,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:28,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769892393] [2024-06-28 03:19:28,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769892393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:28,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:28,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360511832] [2024-06-28 03:19:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:28,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:28,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 687 transitions, 11930 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:19:28,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:28,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:28,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:30,735 INFO L124 PetriNetUnfolderBase]: 5641/8671 cut-off events. [2024-06-28 03:19:30,736 INFO L125 PetriNetUnfolderBase]: For 914480/914496 co-relation queries the response was YES. [2024-06-28 03:19:30,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83164 conditions, 8671 events. 5641/8671 cut-off events. For 914480/914496 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 50766 event pairs, 1647 based on Foata normal form. 17/8672 useless extension candidates. Maximal degree in co-relation 83023. Up to 7599 conditions per place. [2024-06-28 03:19:30,845 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 519 selfloop transitions, 83 changer transitions 0/712 dead transitions. [2024-06-28 03:19:30,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 712 transitions, 13541 flow [2024-06-28 03:19:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 03:19:30,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-28 03:19:30,846 INFO L175 Difference]: Start difference. First operand has 309 places, 687 transitions, 11930 flow. Second operand 7 states and 144 transitions. [2024-06-28 03:19:30,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 712 transitions, 13541 flow [2024-06-28 03:19:32,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 712 transitions, 13075 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:32,296 INFO L231 Difference]: Finished difference. Result has 309 places, 691 transitions, 11715 flow [2024-06-28 03:19:32,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11464, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11715, PETRI_PLACES=309, PETRI_TRANSITIONS=691} [2024-06-28 03:19:32,297 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 264 predicate places. [2024-06-28 03:19:32,297 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 691 transitions, 11715 flow [2024-06-28 03:19:32,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:19:32,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:32,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:32,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:19:32,297 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:32,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash -64967660, now seen corresponding path program 17 times [2024-06-28 03:19:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132882394] [2024-06-28 03:19:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132882394] [2024-06-28 03:19:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132882394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:33,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147827471] [2024-06-28 03:19:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:33,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:33,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:33,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:33,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 691 transitions, 11715 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:33,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:33,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:35,682 INFO L124 PetriNetUnfolderBase]: 5491/8482 cut-off events. [2024-06-28 03:19:35,682 INFO L125 PetriNetUnfolderBase]: For 930553/930575 co-relation queries the response was YES. [2024-06-28 03:19:35,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82241 conditions, 8482 events. 5491/8482 cut-off events. For 930553/930575 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 50576 event pairs, 1161 based on Foata normal form. 28/8500 useless extension candidates. Maximal degree in co-relation 82099. Up to 7098 conditions per place. [2024-06-28 03:19:35,797 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 515 selfloop transitions, 214 changer transitions 0/738 dead transitions. [2024-06-28 03:19:35,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 738 transitions, 13845 flow [2024-06-28 03:19:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:35,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 03:19:35,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 03:19:35,798 INFO L175 Difference]: Start difference. First operand has 309 places, 691 transitions, 11715 flow. Second operand 9 states and 188 transitions. [2024-06-28 03:19:35,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 738 transitions, 13845 flow [2024-06-28 03:19:37,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 738 transitions, 13683 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:37,235 INFO L231 Difference]: Finished difference. Result has 313 places, 699 transitions, 12241 flow [2024-06-28 03:19:37,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11557, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12241, PETRI_PLACES=313, PETRI_TRANSITIONS=699} [2024-06-28 03:19:37,236 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 268 predicate places. [2024-06-28 03:19:37,236 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 699 transitions, 12241 flow [2024-06-28 03:19:37,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:37,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:37,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:37,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:19:37,237 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:37,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -64963940, now seen corresponding path program 18 times [2024-06-28 03:19:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606134276] [2024-06-28 03:19:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:38,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606134276] [2024-06-28 03:19:38,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606134276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:38,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:38,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:38,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215405601] [2024-06-28 03:19:38,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:38,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:38,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 699 transitions, 12241 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:38,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:38,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:38,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:40,371 INFO L124 PetriNetUnfolderBase]: 5569/8588 cut-off events. [2024-06-28 03:19:40,372 INFO L125 PetriNetUnfolderBase]: For 914123/914145 co-relation queries the response was YES. [2024-06-28 03:19:40,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83749 conditions, 8588 events. 5569/8588 cut-off events. For 914123/914145 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 51166 event pairs, 1457 based on Foata normal form. 28/8606 useless extension candidates. Maximal degree in co-relation 83607. Up to 7615 conditions per place. [2024-06-28 03:19:40,499 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 558 selfloop transitions, 180 changer transitions 0/747 dead transitions. [2024-06-28 03:19:40,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 747 transitions, 14244 flow [2024-06-28 03:19:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:19:40,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 03:19:40,501 INFO L175 Difference]: Start difference. First operand has 313 places, 699 transitions, 12241 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:19:40,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 747 transitions, 14244 flow [2024-06-28 03:19:42,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 747 transitions, 13308 flow, removed 96 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:42,393 INFO L231 Difference]: Finished difference. Result has 313 places, 711 transitions, 12039 flow [2024-06-28 03:19:42,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11349, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12039, PETRI_PLACES=313, PETRI_TRANSITIONS=711} [2024-06-28 03:19:42,394 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 268 predicate places. [2024-06-28 03:19:42,394 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 711 transitions, 12039 flow [2024-06-28 03:19:42,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:42,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:42,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:42,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:19:42,394 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:42,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash -64963785, now seen corresponding path program 7 times [2024-06-28 03:19:42,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:42,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848573031] [2024-06-28 03:19:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:43,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848573031] [2024-06-28 03:19:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848573031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:43,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821679442] [2024-06-28 03:19:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:43,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:43,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:43,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 711 transitions, 12039 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:43,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:43,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:43,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:45,905 INFO L124 PetriNetUnfolderBase]: 5619/8669 cut-off events. [2024-06-28 03:19:45,905 INFO L125 PetriNetUnfolderBase]: For 904947/904969 co-relation queries the response was YES. [2024-06-28 03:19:45,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82846 conditions, 8669 events. 5619/8669 cut-off events. For 904947/904969 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 51811 event pairs, 1405 based on Foata normal form. 26/8689 useless extension candidates. Maximal degree in co-relation 82705. Up to 6816 conditions per place. [2024-06-28 03:19:46,050 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 453 selfloop transitions, 318 changer transitions 0/780 dead transitions. [2024-06-28 03:19:46,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 780 transitions, 14403 flow [2024-06-28 03:19:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:19:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:19:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-28 03:19:46,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731404958677686 [2024-06-28 03:19:46,052 INFO L175 Difference]: Start difference. First operand has 313 places, 711 transitions, 12039 flow. Second operand 11 states and 229 transitions. [2024-06-28 03:19:46,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 780 transitions, 14403 flow [2024-06-28 03:19:47,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 780 transitions, 13931 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:47,716 INFO L231 Difference]: Finished difference. Result has 317 places, 720 transitions, 12407 flow [2024-06-28 03:19:47,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11567, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12407, PETRI_PLACES=317, PETRI_TRANSITIONS=720} [2024-06-28 03:19:47,717 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 272 predicate places. [2024-06-28 03:19:47,717 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 720 transitions, 12407 flow [2024-06-28 03:19:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:47,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:47,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:47,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:19:47,717 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash -59457410, now seen corresponding path program 19 times [2024-06-28 03:19:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:47,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645982081] [2024-06-28 03:19:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:48,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:48,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645982081] [2024-06-28 03:19:48,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645982081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:48,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:48,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099470837] [2024-06-28 03:19:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:48,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:48,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:48,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:48,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:48,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:48,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 720 transitions, 12407 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:48,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:48,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:48,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:50,865 INFO L124 PetriNetUnfolderBase]: 5680/8773 cut-off events. [2024-06-28 03:19:50,865 INFO L125 PetriNetUnfolderBase]: For 944071/944093 co-relation queries the response was YES. [2024-06-28 03:19:50,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84629 conditions, 8773 events. 5680/8773 cut-off events. For 944071/944093 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 52611 event pairs, 1522 based on Foata normal form. 32/8799 useless extension candidates. Maximal degree in co-relation 84487. Up to 7922 conditions per place. [2024-06-28 03:19:51,004 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 625 selfloop transitions, 128 changer transitions 0/762 dead transitions. [2024-06-28 03:19:51,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 762 transitions, 14402 flow [2024-06-28 03:19:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:19:51,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 03:19:51,006 INFO L175 Difference]: Start difference. First operand has 317 places, 720 transitions, 12407 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:19:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 762 transitions, 14402 flow [2024-06-28 03:19:52,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 762 transitions, 13652 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-28 03:19:52,839 INFO L231 Difference]: Finished difference. Result has 316 places, 730 transitions, 12248 flow [2024-06-28 03:19:52,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11657, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12248, PETRI_PLACES=316, PETRI_TRANSITIONS=730} [2024-06-28 03:19:52,849 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 271 predicate places. [2024-06-28 03:19:52,849 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 730 transitions, 12248 flow [2024-06-28 03:19:52,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:52,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:52,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:52,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:19:52,850 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:52,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash -59249865, now seen corresponding path program 8 times [2024-06-28 03:19:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:52,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687105685] [2024-06-28 03:19:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:52,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:53,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687105685] [2024-06-28 03:19:53,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687105685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:53,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:53,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757844991] [2024-06-28 03:19:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:53,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:53,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:54,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:54,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 730 transitions, 12248 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:54,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:54,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:54,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:56,028 INFO L124 PetriNetUnfolderBase]: 5756/8901 cut-off events. [2024-06-28 03:19:56,029 INFO L125 PetriNetUnfolderBase]: For 938510/938532 co-relation queries the response was YES. [2024-06-28 03:19:56,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84535 conditions, 8901 events. 5756/8901 cut-off events. For 938510/938532 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 53589 event pairs, 1469 based on Foata normal form. 30/8930 useless extension candidates. Maximal degree in co-relation 84393. Up to 7436 conditions per place. [2024-06-28 03:19:56,155 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 536 selfloop transitions, 246 changer transitions 0/791 dead transitions. [2024-06-28 03:19:56,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 791 transitions, 14710 flow [2024-06-28 03:19:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:19:56,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 03:19:56,157 INFO L175 Difference]: Start difference. First operand has 316 places, 730 transitions, 12248 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:19:56,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 791 transitions, 14710 flow [2024-06-28 03:19:57,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 791 transitions, 14293 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:57,898 INFO L231 Difference]: Finished difference. Result has 319 places, 747 transitions, 12836 flow [2024-06-28 03:19:57,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11835, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12836, PETRI_PLACES=319, PETRI_TRANSITIONS=747} [2024-06-28 03:19:57,899 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 274 predicate places. [2024-06-28 03:19:57,899 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 747 transitions, 12836 flow [2024-06-28 03:19:57,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:57,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:57,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:57,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:19:57,900 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:57,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash 95356411, now seen corresponding path program 9 times [2024-06-28 03:19:57,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:57,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482978114] [2024-06-28 03:19:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:59,024 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 03:19:59,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482978114] [2024-06-28 03:19:59,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482978114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:59,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:59,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681411481] [2024-06-28 03:19:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:59,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:59,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:59,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:59,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 747 transitions, 12836 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:59,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:59,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:59,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:01,153 INFO L124 PetriNetUnfolderBase]: 5934/9163 cut-off events. [2024-06-28 03:20:01,153 INFO L125 PetriNetUnfolderBase]: For 964238/964260 co-relation queries the response was YES. [2024-06-28 03:20:01,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88286 conditions, 9163 events. 5934/9163 cut-off events. For 964238/964260 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 55346 event pairs, 1465 based on Foata normal form. 30/9192 useless extension candidates. Maximal degree in co-relation 88142. Up to 7497 conditions per place. [2024-06-28 03:20:01,281 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 532 selfloop transitions, 283 changer transitions 0/824 dead transitions. [2024-06-28 03:20:01,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 824 transitions, 15900 flow [2024-06-28 03:20:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 03:20:01,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 03:20:01,282 INFO L175 Difference]: Start difference. First operand has 319 places, 747 transitions, 12836 flow. Second operand 9 states and 190 transitions. [2024-06-28 03:20:01,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 824 transitions, 15900 flow [2024-06-28 03:20:03,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 824 transitions, 15368 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:03,063 INFO L231 Difference]: Finished difference. Result has 322 places, 774 transitions, 13504 flow [2024-06-28 03:20:03,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12324, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13504, PETRI_PLACES=322, PETRI_TRANSITIONS=774} [2024-06-28 03:20:03,064 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 277 predicate places. [2024-06-28 03:20:03,064 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 774 transitions, 13504 flow [2024-06-28 03:20:03,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:03,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:03,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:03,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:20:03,065 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:03,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash -59451675, now seen corresponding path program 10 times [2024-06-28 03:20:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316247519] [2024-06-28 03:20:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:04,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:04,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316247519] [2024-06-28 03:20:04,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316247519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:04,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:04,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:04,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598026103] [2024-06-28 03:20:04,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:04,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:04,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:04,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:04,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 774 transitions, 13504 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:04,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:04,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:04,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:06,510 INFO L124 PetriNetUnfolderBase]: 5906/9121 cut-off events. [2024-06-28 03:20:06,511 INFO L125 PetriNetUnfolderBase]: For 947003/947025 co-relation queries the response was YES. [2024-06-28 03:20:06,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87346 conditions, 9121 events. 5906/9121 cut-off events. For 947003/947025 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55109 event pairs, 1481 based on Foata normal form. 30/9150 useless extension candidates. Maximal degree in co-relation 87201. Up to 7652 conditions per place. [2024-06-28 03:20:06,631 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 572 selfloop transitions, 242 changer transitions 0/823 dead transitions. [2024-06-28 03:20:06,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 823 transitions, 15745 flow [2024-06-28 03:20:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 03:20:06,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 03:20:06,632 INFO L175 Difference]: Start difference. First operand has 322 places, 774 transitions, 13504 flow. Second operand 9 states and 187 transitions. [2024-06-28 03:20:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 823 transitions, 15745 flow [2024-06-28 03:20:08,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 823 transitions, 15247 flow, removed 122 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:08,473 INFO L231 Difference]: Finished difference. Result has 326 places, 774 transitions, 13514 flow [2024-06-28 03:20:08,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13006, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13514, PETRI_PLACES=326, PETRI_TRANSITIONS=774} [2024-06-28 03:20:08,473 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 281 predicate places. [2024-06-28 03:20:08,474 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 774 transitions, 13514 flow [2024-06-28 03:20:08,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:08,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:08,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:20:08,474 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:08,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -64819790, now seen corresponding path program 20 times [2024-06-28 03:20:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:08,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077153179] [2024-06-28 03:20:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:09,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077153179] [2024-06-28 03:20:09,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077153179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:09,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:09,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182476481] [2024-06-28 03:20:09,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:09,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:09,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 774 transitions, 13514 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:09,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:09,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:11,904 INFO L124 PetriNetUnfolderBase]: 5944/9174 cut-off events. [2024-06-28 03:20:11,904 INFO L125 PetriNetUnfolderBase]: For 970927/970939 co-relation queries the response was YES. [2024-06-28 03:20:11,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88874 conditions, 9174 events. 5944/9174 cut-off events. For 970927/970939 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 55476 event pairs, 1590 based on Foata normal form. 20/9182 useless extension candidates. Maximal degree in co-relation 88727. Up to 8320 conditions per place. [2024-06-28 03:20:12,027 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 676 selfloop transitions, 131 changer transitions 0/816 dead transitions. [2024-06-28 03:20:12,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 816 transitions, 15581 flow [2024-06-28 03:20:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 03:20:12,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-28 03:20:12,028 INFO L175 Difference]: Start difference. First operand has 326 places, 774 transitions, 13514 flow. Second operand 9 states and 179 transitions. [2024-06-28 03:20:12,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 816 transitions, 15581 flow [2024-06-28 03:20:13,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 816 transitions, 15006 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:13,913 INFO L231 Difference]: Finished difference. Result has 327 places, 782 transitions, 13487 flow [2024-06-28 03:20:13,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12939, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13487, PETRI_PLACES=327, PETRI_TRANSITIONS=782} [2024-06-28 03:20:13,914 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 282 predicate places. [2024-06-28 03:20:13,914 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 782 transitions, 13487 flow [2024-06-28 03:20:13,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:13,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:13,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:13,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:20:13,915 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 03:20:13,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -732068275, now seen corresponding path program 5 times [2024-06-28 03:20:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:13,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739659855] [2024-06-28 03:20:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:13,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:14,771 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 03:20:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739659855] [2024-06-28 03:20:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739659855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:14,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:20:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179119327] [2024-06-28 03:20:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:20:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:20:14,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:20:14,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:14,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 782 transitions, 13487 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:20:14,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:14,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:14,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:16,843 INFO L124 PetriNetUnfolderBase]: 6221/9586 cut-off events. [2024-06-28 03:20:16,844 INFO L125 PetriNetUnfolderBase]: For 1009933/1009965 co-relation queries the response was YES. [2024-06-28 03:20:16,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91015 conditions, 9586 events. 6221/9586 cut-off events. For 1009933/1009965 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 57580 event pairs, 1803 based on Foata normal form. 28/9594 useless extension candidates. Maximal degree in co-relation 90867. Up to 8421 conditions per place. [2024-06-28 03:20:16,987 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 597 selfloop transitions, 80 changer transitions 0/806 dead transitions. [2024-06-28 03:20:16,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 806 transitions, 15310 flow [2024-06-28 03:20:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:20:16,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-28 03:20:16,988 INFO L175 Difference]: Start difference. First operand has 327 places, 782 transitions, 13487 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:20:16,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 806 transitions, 15310 flow [2024-06-28 03:20:19,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 806 transitions, 14896 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:19,238 INFO L231 Difference]: Finished difference. Result has 328 places, 790 transitions, 13425 flow [2024-06-28 03:20:19,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13073, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13425, PETRI_PLACES=328, PETRI_TRANSITIONS=790} [2024-06-28 03:20:19,239 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 283 predicate places. [2024-06-28 03:20:19,239 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 790 transitions, 13425 flow [2024-06-28 03:20:19,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:20:19,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:19,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:19,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:20:19,239 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 03:20:19,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash -732067841, now seen corresponding path program 2 times [2024-06-28 03:20:19,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:19,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390208662] [2024-06-28 03:20:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:19,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:20,013 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 03:20:20,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390208662] [2024-06-28 03:20:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390208662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:20,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:20,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:20:20,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126744698] [2024-06-28 03:20:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:20:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:20,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:20:20,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:20:20,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:20,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 790 transitions, 13425 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:20:20,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:20,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:20,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:22,186 INFO L124 PetriNetUnfolderBase]: 6403/9778 cut-off events. [2024-06-28 03:20:22,186 INFO L125 PetriNetUnfolderBase]: For 1028831/1028841 co-relation queries the response was YES. [2024-06-28 03:20:22,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91948 conditions, 9778 events. 6403/9778 cut-off events. For 1028831/1028841 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 57975 event pairs, 2139 based on Foata normal form. 8/9775 useless extension candidates. Maximal degree in co-relation 91798. Up to 8977 conditions per place. [2024-06-28 03:20:22,349 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 650 selfloop transitions, 33 changer transitions 0/808 dead transitions. [2024-06-28 03:20:22,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 808 transitions, 15044 flow [2024-06-28 03:20:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:20:22,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41233766233766234 [2024-06-28 03:20:22,350 INFO L175 Difference]: Start difference. First operand has 328 places, 790 transitions, 13425 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:20:22,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 808 transitions, 15044 flow [2024-06-28 03:20:24,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 808 transitions, 14917 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 03:20:24,647 INFO L231 Difference]: Finished difference. Result has 331 places, 793 transitions, 13433 flow [2024-06-28 03:20:24,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13300, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=760, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13433, PETRI_PLACES=331, PETRI_TRANSITIONS=793} [2024-06-28 03:20:24,647 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-06-28 03:20:24,647 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 793 transitions, 13433 flow [2024-06-28 03:20:24,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:20:24,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:24,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:24,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:20:24,648 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:24,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1377524535, now seen corresponding path program 11 times [2024-06-28 03:20:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432426185] [2024-06-28 03:20:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:25,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:25,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432426185] [2024-06-28 03:20:25,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432426185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:25,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:25,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582235259] [2024-06-28 03:20:25,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:25,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:25,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:25,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 793 transitions, 13433 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:25,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:25,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:25,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:27,847 INFO L124 PetriNetUnfolderBase]: 6050/9338 cut-off events. [2024-06-28 03:20:27,847 INFO L125 PetriNetUnfolderBase]: For 1026768/1026770 co-relation queries the response was YES. [2024-06-28 03:20:27,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89582 conditions, 9338 events. 6050/9338 cut-off events. For 1026768/1026770 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 56644 event pairs, 2028 based on Foata normal form. 15/9350 useless extension candidates. Maximal degree in co-relation 89432. Up to 8666 conditions per place. [2024-06-28 03:20:27,991 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 769 selfloop transitions, 68 changer transitions 0/847 dead transitions. [2024-06-28 03:20:27,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 847 transitions, 16229 flow [2024-06-28 03:20:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:20:27,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 03:20:27,994 INFO L175 Difference]: Start difference. First operand has 331 places, 793 transitions, 13433 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:20:27,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 847 transitions, 16229 flow [2024-06-28 03:20:30,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 847 transitions, 16134 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:30,180 INFO L231 Difference]: Finished difference. Result has 336 places, 810 transitions, 13967 flow [2024-06-28 03:20:30,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13342, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13967, PETRI_PLACES=336, PETRI_TRANSITIONS=810} [2024-06-28 03:20:30,181 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 291 predicate places. [2024-06-28 03:20:30,181 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 810 transitions, 13967 flow [2024-06-28 03:20:30,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:30,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:30,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:20:30,182 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:30,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1736386407, now seen corresponding path program 1 times [2024-06-28 03:20:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582913439] [2024-06-28 03:20:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:31,254 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 03:20:31,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:31,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582913439] [2024-06-28 03:20:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582913439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:31,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:31,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807787426] [2024-06-28 03:20:31,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:31,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:31,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:31,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 810 transitions, 13967 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:31,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:31,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:31,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:33,859 INFO L124 PetriNetUnfolderBase]: 6722/10171 cut-off events. [2024-06-28 03:20:33,859 INFO L125 PetriNetUnfolderBase]: For 1032432/1032432 co-relation queries the response was YES. [2024-06-28 03:20:33,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96363 conditions, 10171 events. 6722/10171 cut-off events. For 1032432/1032432 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 59528 event pairs, 2358 based on Foata normal form. 3/10173 useless extension candidates. Maximal degree in co-relation 96212. Up to 9779 conditions per place. [2024-06-28 03:20:34,010 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 806 selfloop transitions, 34 changer transitions 0/848 dead transitions. [2024-06-28 03:20:34,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 848 transitions, 15948 flow [2024-06-28 03:20:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:20:34,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 03:20:34,011 INFO L175 Difference]: Start difference. First operand has 336 places, 810 transitions, 13967 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:20:34,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 848 transitions, 15948 flow [2024-06-28 03:20:36,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 848 transitions, 15379 flow, removed 188 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:36,491 INFO L231 Difference]: Finished difference. Result has 339 places, 819 transitions, 13652 flow [2024-06-28 03:20:36,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13412, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13652, PETRI_PLACES=339, PETRI_TRANSITIONS=819} [2024-06-28 03:20:36,492 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 294 predicate places. [2024-06-28 03:20:36,492 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 819 transitions, 13652 flow [2024-06-28 03:20:36,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:36,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:36,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:36,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:20:36,493 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:36,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1120822215, now seen corresponding path program 12 times [2024-06-28 03:20:36,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:36,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980066262] [2024-06-28 03:20:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:37,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:37,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980066262] [2024-06-28 03:20:37,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980066262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:37,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:37,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265799005] [2024-06-28 03:20:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:37,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:37,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:37,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:37,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 819 transitions, 13652 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:37,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:37,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:37,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:39,795 INFO L124 PetriNetUnfolderBase]: 6194/9567 cut-off events. [2024-06-28 03:20:39,795 INFO L125 PetriNetUnfolderBase]: For 1048115/1048117 co-relation queries the response was YES. [2024-06-28 03:20:39,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91315 conditions, 9567 events. 6194/9567 cut-off events. For 1048115/1048117 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 58413 event pairs, 1950 based on Foata normal form. 12/9574 useless extension candidates. Maximal degree in co-relation 91163. Up to 8691 conditions per place. [2024-06-28 03:20:39,950 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 743 selfloop transitions, 118 changer transitions 0/871 dead transitions. [2024-06-28 03:20:39,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 871 transitions, 16219 flow [2024-06-28 03:20:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:20:39,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 03:20:39,952 INFO L175 Difference]: Start difference. First operand has 339 places, 819 transitions, 13652 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:20:39,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 871 transitions, 16219 flow [2024-06-28 03:20:42,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 871 transitions, 16141 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:42,240 INFO L231 Difference]: Finished difference. Result has 340 places, 831 transitions, 14167 flow [2024-06-28 03:20:42,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13574, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14167, PETRI_PLACES=340, PETRI_TRANSITIONS=831} [2024-06-28 03:20:42,241 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 295 predicate places. [2024-06-28 03:20:42,241 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 831 transitions, 14167 flow [2024-06-28 03:20:42,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:42,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:42,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:42,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:20:42,242 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:42,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2002625598, now seen corresponding path program 21 times [2024-06-28 03:20:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:42,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812637467] [2024-06-28 03:20:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:43,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:43,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812637467] [2024-06-28 03:20:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812637467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:43,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:43,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:43,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377855165] [2024-06-28 03:20:43,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:43,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:43,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:43,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:43,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 831 transitions, 14167 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:43,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:43,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:43,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:45,566 INFO L124 PetriNetUnfolderBase]: 6166/9513 cut-off events. [2024-06-28 03:20:45,566 INFO L125 PetriNetUnfolderBase]: For 1050875/1050877 co-relation queries the response was YES. [2024-06-28 03:20:45,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90927 conditions, 9513 events. 6166/9513 cut-off events. For 1050875/1050877 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 57988 event pairs, 2007 based on Foata normal form. 14/9521 useless extension candidates. Maximal degree in co-relation 90774. Up to 8938 conditions per place. [2024-06-28 03:20:45,713 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 800 selfloop transitions, 48 changer transitions 0/858 dead transitions. [2024-06-28 03:20:45,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 858 transitions, 16018 flow [2024-06-28 03:20:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:20:45,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-28 03:20:45,716 INFO L175 Difference]: Start difference. First operand has 340 places, 831 transitions, 14167 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:20:45,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 858 transitions, 16018 flow [2024-06-28 03:20:48,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 858 transitions, 15468 flow, removed 165 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:48,308 INFO L231 Difference]: Finished difference. Result has 342 places, 831 transitions, 13731 flow [2024-06-28 03:20:48,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13617, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13731, PETRI_PLACES=342, PETRI_TRANSITIONS=831} [2024-06-28 03:20:48,309 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 297 predicate places. [2024-06-28 03:20:48,310 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 831 transitions, 13731 flow [2024-06-28 03:20:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:48,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:48,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:20:48,310 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:48,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2002418053, now seen corresponding path program 13 times [2024-06-28 03:20:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:48,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422218430] [2024-06-28 03:20:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422218430] [2024-06-28 03:20:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422218430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:49,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:49,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:49,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263654684] [2024-06-28 03:20:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:49,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:49,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 831 transitions, 13731 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:49,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:49,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:49,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:51,624 INFO L124 PetriNetUnfolderBase]: 6230/9628 cut-off events. [2024-06-28 03:20:51,624 INFO L125 PetriNetUnfolderBase]: For 1071686/1071688 co-relation queries the response was YES. [2024-06-28 03:20:51,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91310 conditions, 9628 events. 6230/9628 cut-off events. For 1071686/1071688 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 58926 event pairs, 1970 based on Foata normal form. 12/9635 useless extension candidates. Maximal degree in co-relation 91156. Up to 8743 conditions per place. [2024-06-28 03:20:51,779 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 759 selfloop transitions, 113 changer transitions 0/882 dead transitions. [2024-06-28 03:20:51,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 882 transitions, 16325 flow [2024-06-28 03:20:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:20:51,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 03:20:51,781 INFO L175 Difference]: Start difference. First operand has 342 places, 831 transitions, 13731 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:20:51,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 882 transitions, 16325 flow [2024-06-28 03:20:54,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 882 transitions, 16080 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:54,172 INFO L231 Difference]: Finished difference. Result has 343 places, 843 transitions, 14093 flow [2024-06-28 03:20:54,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13486, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14093, PETRI_PLACES=343, PETRI_TRANSITIONS=843} [2024-06-28 03:20:54,173 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-28 03:20:54,173 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 843 transitions, 14093 flow [2024-06-28 03:20:54,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:54,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:54,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:20:54,174 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:54,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2002625443, now seen corresponding path program 14 times [2024-06-28 03:20:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:54,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634717296] [2024-06-28 03:20:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:55,232 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 03:20:55,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634717296] [2024-06-28 03:20:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634717296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:55,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777140250] [2024-06-28 03:20:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:55,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:55,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:55,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:55,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:55,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:55,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 843 transitions, 14093 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:55,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:55,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:55,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:57,662 INFO L124 PetriNetUnfolderBase]: 6202/9582 cut-off events. [2024-06-28 03:20:57,663 INFO L125 PetriNetUnfolderBase]: For 1071733/1071735 co-relation queries the response was YES. [2024-06-28 03:20:57,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90675 conditions, 9582 events. 6202/9582 cut-off events. For 1071733/1071735 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 58596 event pairs, 1925 based on Foata normal form. 12/9589 useless extension candidates. Maximal degree in co-relation 90520. Up to 8520 conditions per place. [2024-06-28 03:20:57,817 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 723 selfloop transitions, 154 changer transitions 0/887 dead transitions. [2024-06-28 03:20:57,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 887 transitions, 16157 flow [2024-06-28 03:20:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:20:57,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-28 03:20:57,818 INFO L175 Difference]: Start difference. First operand has 343 places, 843 transitions, 14093 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:20:57,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 887 transitions, 16157 flow [2024-06-28 03:21:00,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 887 transitions, 15649 flow, removed 149 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:00,387 INFO L231 Difference]: Finished difference. Result has 346 places, 843 transitions, 13929 flow [2024-06-28 03:21:00,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13585, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13929, PETRI_PLACES=346, PETRI_TRANSITIONS=843} [2024-06-28 03:21:00,388 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 301 predicate places. [2024-06-28 03:21:00,388 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 843 transitions, 13929 flow [2024-06-28 03:21:00,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:00,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:00,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:00,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:21:00,389 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 03:21:00,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash -318285731, now seen corresponding path program 3 times [2024-06-28 03:21:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:00,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445840244] [2024-06-28 03:21:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:00,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:01,127 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 03:21:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445840244] [2024-06-28 03:21:01,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445840244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:01,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:01,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913173338] [2024-06-28 03:21:01,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:01,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:01,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 843 transitions, 13929 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 03:21:01,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:01,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:01,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:03,489 INFO L124 PetriNetUnfolderBase]: 6650/10158 cut-off events. [2024-06-28 03:21:03,489 INFO L125 PetriNetUnfolderBase]: For 1093338/1093356 co-relation queries the response was YES. [2024-06-28 03:21:03,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93580 conditions, 10158 events. 6650/10158 cut-off events. For 1093338/1093356 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 60772 event pairs, 2400 based on Foata normal form. 13/10150 useless extension candidates. Maximal degree in co-relation 93424. Up to 9390 conditions per place. [2024-06-28 03:21:03,640 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 715 selfloop transitions, 15 changer transitions 0/855 dead transitions. [2024-06-28 03:21:03,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 855 transitions, 15481 flow [2024-06-28 03:21:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 03:21:03,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2024-06-28 03:21:03,641 INFO L175 Difference]: Start difference. First operand has 346 places, 843 transitions, 13929 flow. Second operand 7 states and 116 transitions. [2024-06-28 03:21:03,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 855 transitions, 15481 flow [2024-06-28 03:21:06,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 855 transitions, 14692 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:06,417 INFO L231 Difference]: Finished difference. Result has 344 places, 846 transitions, 13242 flow [2024-06-28 03:21:06,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13140, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=828, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13242, PETRI_PLACES=344, PETRI_TRANSITIONS=846} [2024-06-28 03:21:06,418 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 299 predicate places. [2024-06-28 03:21:06,418 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 846 transitions, 13242 flow [2024-06-28 03:21:06,418 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 03:21:06,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:06,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:06,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:21:06,418 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 03:21:06,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash -318761395, now seen corresponding path program 6 times [2024-06-28 03:21:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390471836] [2024-06-28 03:21:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390471836] [2024-06-28 03:21:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390471836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132298044] [2024-06-28 03:21:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:07,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:07,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:07,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:07,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 846 transitions, 13242 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:21:07,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:07,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:07,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:09,510 INFO L124 PetriNetUnfolderBase]: 6470/9978 cut-off events. [2024-06-28 03:21:09,510 INFO L125 PetriNetUnfolderBase]: For 1084342/1084362 co-relation queries the response was YES. [2024-06-28 03:21:09,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89907 conditions, 9978 events. 6470/9978 cut-off events. For 1084342/1084362 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 60578 event pairs, 2319 based on Foata normal form. 16/9973 useless extension candidates. Maximal degree in co-relation 89751. Up to 9029 conditions per place. [2024-06-28 03:21:09,667 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 699 selfloop transitions, 26 changer transitions 0/856 dead transitions. [2024-06-28 03:21:09,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 856 transitions, 14874 flow [2024-06-28 03:21:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:21:09,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-28 03:21:09,668 INFO L175 Difference]: Start difference. First operand has 344 places, 846 transitions, 13242 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:21:09,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 856 transitions, 14874 flow [2024-06-28 03:21:12,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 856 transitions, 14780 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 03:21:12,327 INFO L231 Difference]: Finished difference. Result has 346 places, 846 transitions, 13208 flow [2024-06-28 03:21:12,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13148, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=820, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13208, PETRI_PLACES=346, PETRI_TRANSITIONS=846} [2024-06-28 03:21:12,328 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 301 predicate places. [2024-06-28 03:21:12,328 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 846 transitions, 13208 flow [2024-06-28 03:21:12,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:21:12,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:12,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:12,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:21:12,329 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 03:21:12,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1183581951, now seen corresponding path program 4 times [2024-06-28 03:21:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:12,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410152250] [2024-06-28 03:21:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:13,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410152250] [2024-06-28 03:21:13,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410152250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:13,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:13,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697166598] [2024-06-28 03:21:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:13,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:13,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:13,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:13,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 846 transitions, 13208 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:13,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:13,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:13,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:15,292 INFO L124 PetriNetUnfolderBase]: 6643/10149 cut-off events. [2024-06-28 03:21:15,293 INFO L125 PetriNetUnfolderBase]: For 1102179/1102197 co-relation queries the response was YES. [2024-06-28 03:21:15,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90876 conditions, 10149 events. 6643/10149 cut-off events. For 1102179/1102197 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 60717 event pairs, 2423 based on Foata normal form. 13/10141 useless extension candidates. Maximal degree in co-relation 90719. Up to 9375 conditions per place. [2024-06-28 03:21:15,455 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 710 selfloop transitions, 20 changer transitions 0/855 dead transitions. [2024-06-28 03:21:15,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 855 transitions, 14700 flow [2024-06-28 03:21:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 03:21:15,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-28 03:21:15,456 INFO L175 Difference]: Start difference. First operand has 346 places, 846 transitions, 13208 flow. Second operand 7 states and 118 transitions. [2024-06-28 03:21:15,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 855 transitions, 14700 flow [2024-06-28 03:21:17,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 855 transitions, 14455 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:17,909 INFO L231 Difference]: Finished difference. Result has 345 places, 846 transitions, 13009 flow [2024-06-28 03:21:17,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12963, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=826, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13009, PETRI_PLACES=345, PETRI_TRANSITIONS=846} [2024-06-28 03:21:17,910 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 300 predicate places. [2024-06-28 03:21:17,910 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 846 transitions, 13009 flow [2024-06-28 03:21:17,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:17,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:17,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:17,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:21:17,911 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 03:21:17,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash -554931547, now seen corresponding path program 1 times [2024-06-28 03:21:17,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:17,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338713848] [2024-06-28 03:21:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:17,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:18,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:18,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338713848] [2024-06-28 03:21:18,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338713848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:18,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:18,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:18,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531107880] [2024-06-28 03:21:18,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:18,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:18,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:18,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:18,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:18,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 846 transitions, 13009 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:18,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:18,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:18,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:21,003 INFO L124 PetriNetUnfolderBase]: 6847/10361 cut-off events. [2024-06-28 03:21:21,003 INFO L125 PetriNetUnfolderBase]: For 1119217/1119217 co-relation queries the response was YES. [2024-06-28 03:21:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93529 conditions, 10361 events. 6847/10361 cut-off events. For 1119217/1119217 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 60982 event pairs, 2396 based on Foata normal form. 1/10361 useless extension candidates. Maximal degree in co-relation 93373. Up to 10009 conditions per place. [2024-06-28 03:21:21,186 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 834 selfloop transitions, 25 changer transitions 0/868 dead transitions. [2024-06-28 03:21:21,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 868 transitions, 15025 flow [2024-06-28 03:21:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:21:21,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:21:21,188 INFO L175 Difference]: Start difference. First operand has 345 places, 846 transitions, 13009 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:21:21,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 868 transitions, 15025 flow [2024-06-28 03:21:23,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 868 transitions, 14953 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:23,830 INFO L231 Difference]: Finished difference. Result has 346 places, 852 transitions, 13075 flow [2024-06-28 03:21:23,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12937, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13075, PETRI_PLACES=346, PETRI_TRANSITIONS=852} [2024-06-28 03:21:23,831 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 301 predicate places. [2024-06-28 03:21:23,831 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 852 transitions, 13075 flow [2024-06-28 03:21:23,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:23,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:23,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:21:23,832 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 03:21:23,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash -55740819, now seen corresponding path program 1 times [2024-06-28 03:21:23,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:23,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748850556] [2024-06-28 03:21:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:23,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:24,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748850556] [2024-06-28 03:21:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748850556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:24,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:24,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:24,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226544503] [2024-06-28 03:21:24,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:24,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:24,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:24,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:24,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:24,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:24,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 852 transitions, 13075 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:24,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:24,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:24,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:27,149 INFO L124 PetriNetUnfolderBase]: 6665/10175 cut-off events. [2024-06-28 03:21:27,150 INFO L125 PetriNetUnfolderBase]: For 1154460/1154478 co-relation queries the response was YES. [2024-06-28 03:21:27,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91695 conditions, 10175 events. 6665/10175 cut-off events. For 1154460/1154478 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 60802 event pairs, 2423 based on Foata normal form. 13/10167 useless extension candidates. Maximal degree in co-relation 91538. Up to 9372 conditions per place. [2024-06-28 03:21:27,325 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 720 selfloop transitions, 24 changer transitions 0/871 dead transitions. [2024-06-28 03:21:27,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 871 transitions, 14853 flow [2024-06-28 03:21:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:21:27,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-28 03:21:27,326 INFO L175 Difference]: Start difference. First operand has 346 places, 852 transitions, 13075 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:21:27,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 871 transitions, 14853 flow [2024-06-28 03:21:30,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 871 transitions, 14794 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:30,188 INFO L231 Difference]: Finished difference. Result has 350 places, 858 transitions, 13160 flow [2024-06-28 03:21:30,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13016, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=831, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13160, PETRI_PLACES=350, PETRI_TRANSITIONS=858} [2024-06-28 03:21:30,189 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-28 03:21:30,189 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 858 transitions, 13160 flow [2024-06-28 03:21:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:30,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:30,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:30,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:21:30,190 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 03:21:30,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash -554752057, now seen corresponding path program 2 times [2024-06-28 03:21:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:30,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232980458] [2024-06-28 03:21:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:30,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:30,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:30,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232980458] [2024-06-28 03:21:30,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232980458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:30,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:30,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:30,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885811289] [2024-06-28 03:21:30,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:30,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:30,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:30,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:30,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 858 transitions, 13160 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:30,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:30,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:30,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:33,400 INFO L124 PetriNetUnfolderBase]: 6869/10387 cut-off events. [2024-06-28 03:21:33,400 INFO L125 PetriNetUnfolderBase]: For 1177119/1177119 co-relation queries the response was YES. [2024-06-28 03:21:33,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95222 conditions, 10387 events. 6869/10387 cut-off events. For 1177119/1177119 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 60998 event pairs, 2395 based on Foata normal form. 1/10387 useless extension candidates. Maximal degree in co-relation 95063. Up to 10032 conditions per place. [2024-06-28 03:21:33,563 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 836 selfloop transitions, 27 changer transitions 0/874 dead transitions. [2024-06-28 03:21:33,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 874 transitions, 15130 flow [2024-06-28 03:21:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:21:33,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-28 03:21:33,564 INFO L175 Difference]: Start difference. First operand has 350 places, 858 transitions, 13160 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:21:33,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 874 transitions, 15130 flow [2024-06-28 03:21:36,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 874 transitions, 15077 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:36,418 INFO L231 Difference]: Finished difference. Result has 354 places, 861 transitions, 13203 flow [2024-06-28 03:21:36,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13107, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=834, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13203, PETRI_PLACES=354, PETRI_TRANSITIONS=861} [2024-06-28 03:21:36,419 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 309 predicate places. [2024-06-28 03:21:36,419 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 861 transitions, 13203 flow [2024-06-28 03:21:36,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:36,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:36,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:36,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:21:36,420 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 03:21:36,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash 201883813, now seen corresponding path program 3 times [2024-06-28 03:21:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:36,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87807323] [2024-06-28 03:21:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:36,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:37,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:37,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87807323] [2024-06-28 03:21:37,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87807323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:37,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:37,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:37,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411067211] [2024-06-28 03:21:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:37,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:37,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:37,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:37,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:37,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 861 transitions, 13203 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:37,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:37,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:37,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:39,706 INFO L124 PetriNetUnfolderBase]: 6866/10384 cut-off events. [2024-06-28 03:21:39,707 INFO L125 PetriNetUnfolderBase]: For 1201630/1201632 co-relation queries the response was YES. [2024-06-28 03:21:39,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95503 conditions, 10384 events. 6866/10384 cut-off events. For 1201630/1201632 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 60943 event pairs, 2402 based on Foata normal form. 1/10384 useless extension candidates. Maximal degree in co-relation 95342. Up to 10029 conditions per place. [2024-06-28 03:21:39,862 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 832 selfloop transitions, 27 changer transitions 0/870 dead transitions. [2024-06-28 03:21:39,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 870 transitions, 14953 flow [2024-06-28 03:21:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:21:39,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 03:21:39,863 INFO L175 Difference]: Start difference. First operand has 354 places, 861 transitions, 13203 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:21:39,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 870 transitions, 14953 flow [2024-06-28 03:21:42,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 870 transitions, 14877 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:42,842 INFO L231 Difference]: Finished difference. Result has 357 places, 861 transitions, 13187 flow [2024-06-28 03:21:42,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13127, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=834, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13187, PETRI_PLACES=357, PETRI_TRANSITIONS=861} [2024-06-28 03:21:42,843 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 312 predicate places. [2024-06-28 03:21:42,843 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 861 transitions, 13187 flow [2024-06-28 03:21:42,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:42,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:42,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:21:42,843 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 03:21:42,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1183100769, now seen corresponding path program 2 times [2024-06-28 03:21:42,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:42,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104030736] [2024-06-28 03:21:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:43,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:43,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104030736] [2024-06-28 03:21:43,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104030736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:43,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:43,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985498617] [2024-06-28 03:21:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:43,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:43,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:43,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 861 transitions, 13187 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:43,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:43,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:43,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:46,036 INFO L124 PetriNetUnfolderBase]: 6672/10186 cut-off events. [2024-06-28 03:21:46,037 INFO L125 PetriNetUnfolderBase]: For 1236601/1236621 co-relation queries the response was YES. [2024-06-28 03:21:46,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93155 conditions, 10186 events. 6672/10186 cut-off events. For 1236601/1236621 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 60903 event pairs, 2425 based on Foata normal form. 15/10180 useless extension candidates. Maximal degree in co-relation 92993. Up to 9380 conditions per place. [2024-06-28 03:21:46,212 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 718 selfloop transitions, 28 changer transitions 0/874 dead transitions. [2024-06-28 03:21:46,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 874 transitions, 14919 flow [2024-06-28 03:21:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:21:46,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 03:21:46,213 INFO L175 Difference]: Start difference. First operand has 357 places, 861 transitions, 13187 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:21:46,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 874 transitions, 14919 flow [2024-06-28 03:21:49,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 874 transitions, 14835 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:49,122 INFO L231 Difference]: Finished difference. Result has 357 places, 864 transitions, 13211 flow [2024-06-28 03:21:49,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13103, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=836, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13211, PETRI_PLACES=357, PETRI_TRANSITIONS=864} [2024-06-28 03:21:49,123 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 312 predicate places. [2024-06-28 03:21:49,124 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 864 transitions, 13211 flow [2024-06-28 03:21:49,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:49,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:49,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:49,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:21:49,124 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 03:21:49,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash -318576449, now seen corresponding path program 3 times [2024-06-28 03:21:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436662047] [2024-06-28 03:21:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:49,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436662047] [2024-06-28 03:21:49,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436662047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:49,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:49,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892629264] [2024-06-28 03:21:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:49,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:49,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:49,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:49,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 864 transitions, 13211 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:49,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:49,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:49,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:52,382 INFO L124 PetriNetUnfolderBase]: 6669/10182 cut-off events. [2024-06-28 03:21:52,383 INFO L125 PetriNetUnfolderBase]: For 1261333/1261353 co-relation queries the response was YES. [2024-06-28 03:21:52,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93376 conditions, 10182 events. 6669/10182 cut-off events. For 1261333/1261353 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 60853 event pairs, 2425 based on Foata normal form. 15/10176 useless extension candidates. Maximal degree in co-relation 93213. Up to 9377 conditions per place. [2024-06-28 03:21:52,573 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 718 selfloop transitions, 27 changer transitions 0/873 dead transitions. [2024-06-28 03:21:52,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 873 transitions, 14733 flow [2024-06-28 03:21:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:21:52,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 03:21:52,574 INFO L175 Difference]: Start difference. First operand has 357 places, 864 transitions, 13211 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:21:52,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 873 transitions, 14733 flow [2024-06-28 03:21:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 873 transitions, 14625 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:55,947 INFO L231 Difference]: Finished difference. Result has 360 places, 864 transitions, 13163 flow [2024-06-28 03:21:55,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13103, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13163, PETRI_PLACES=360, PETRI_TRANSITIONS=864} [2024-06-28 03:21:55,948 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 315 predicate places. [2024-06-28 03:21:55,948 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 864 transitions, 13163 flow [2024-06-28 03:21:55,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 03:21:55,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:55,948 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 03:21:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:21:55,948 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:55,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 724536075, now seen corresponding path program 1 times [2024-06-28 03:21:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985678962] [2024-06-28 03:21:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:56,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:56,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985678962] [2024-06-28 03:21:56,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985678962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:56,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:56,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541884642] [2024-06-28 03:21:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:56,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:56,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:56,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:56,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:56,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:56,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 864 transitions, 13163 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:21:56,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:56,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:56,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:59,420 INFO L124 PetriNetUnfolderBase]: 6516/10099 cut-off events. [2024-06-28 03:21:59,420 INFO L125 PetriNetUnfolderBase]: For 1416489/1416543 co-relation queries the response was YES. [2024-06-28 03:21:59,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97043 conditions, 10099 events. 6516/10099 cut-off events. For 1416489/1416543 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 62498 event pairs, 1098 based on Foata normal form. 64/10159 useless extension candidates. Maximal degree in co-relation 96879. Up to 4396 conditions per place. [2024-06-28 03:21:59,576 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 441 selfloop transitions, 481 changer transitions 0/936 dead transitions. [2024-06-28 03:21:59,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 936 transitions, 16295 flow [2024-06-28 03:21:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-28 03:21:59,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:21:59,577 INFO L175 Difference]: Start difference. First operand has 360 places, 864 transitions, 13163 flow. Second operand 10 states and 220 transitions. [2024-06-28 03:21:59,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 936 transitions, 16295 flow [2024-06-28 03:22:02,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 936 transitions, 16219 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:02,198 INFO L231 Difference]: Finished difference. Result has 364 places, 868 transitions, 14406 flow [2024-06-28 03:22:02,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13087, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14406, PETRI_PLACES=364, PETRI_TRANSITIONS=868} [2024-06-28 03:22:02,199 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 319 predicate places. [2024-06-28 03:22:02,199 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 868 transitions, 14406 flow [2024-06-28 03:22:02,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:02,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:02,200 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 03:22:02,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:22:02,200 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:02,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:02,200 INFO L85 PathProgramCache]: Analyzing trace with hash -245912019, now seen corresponding path program 2 times [2024-06-28 03:22:02,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202022341] [2024-06-28 03:22:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:02,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202022341] [2024-06-28 03:22:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202022341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174013861] [2024-06-28 03:22:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:03,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 868 transitions, 14406 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:03,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:03,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:05,945 INFO L124 PetriNetUnfolderBase]: 6915/10771 cut-off events. [2024-06-28 03:22:05,946 INFO L125 PetriNetUnfolderBase]: For 1634961/1635015 co-relation queries the response was YES. [2024-06-28 03:22:06,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107738 conditions, 10771 events. 6915/10771 cut-off events. For 1634961/1635015 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 67889 event pairs, 1525 based on Foata normal form. 72/10840 useless extension candidates. Maximal degree in co-relation 107572. Up to 5873 conditions per place. [2024-06-28 03:22:06,133 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 469 selfloop transitions, 464 changer transitions 0/947 dead transitions. [2024-06-28 03:22:06,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 947 transitions, 17663 flow [2024-06-28 03:22:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-06-28 03:22:06,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49772727272727274 [2024-06-28 03:22:06,135 INFO L175 Difference]: Start difference. First operand has 364 places, 868 transitions, 14406 flow. Second operand 10 states and 219 transitions. [2024-06-28 03:22:06,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 947 transitions, 17663 flow [2024-06-28 03:22:09,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 947 transitions, 17200 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:22:09,559 INFO L231 Difference]: Finished difference. Result has 369 places, 873 transitions, 15079 flow [2024-06-28 03:22:09,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13983, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15079, PETRI_PLACES=369, PETRI_TRANSITIONS=873} [2024-06-28 03:22:09,561 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 324 predicate places. [2024-06-28 03:22:09,561 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 873 transitions, 15079 flow [2024-06-28 03:22:09,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:09,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:09,561 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 03:22:09,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:22:09,561 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:09,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash -967739731, now seen corresponding path program 3 times [2024-06-28 03:22:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510425915] [2024-06-28 03:22:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:10,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:10,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510425915] [2024-06-28 03:22:10,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510425915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:10,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:10,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:10,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210383533] [2024-06-28 03:22:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:10,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:10,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:10,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:10,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 873 transitions, 15079 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:10,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:10,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:10,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:13,549 INFO L124 PetriNetUnfolderBase]: 7251/11347 cut-off events. [2024-06-28 03:22:13,549 INFO L125 PetriNetUnfolderBase]: For 1798742/1798796 co-relation queries the response was YES. [2024-06-28 03:22:13,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116468 conditions, 11347 events. 7251/11347 cut-off events. For 1798742/1798796 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 72633 event pairs, 1728 based on Foata normal form. 72/11418 useless extension candidates. Maximal degree in co-relation 116300. Up to 7820 conditions per place. [2024-06-28 03:22:13,748 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 515 selfloop transitions, 418 changer transitions 0/947 dead transitions. [2024-06-28 03:22:13,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 947 transitions, 18277 flow [2024-06-28 03:22:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-28 03:22:13,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-06-28 03:22:13,751 INFO L175 Difference]: Start difference. First operand has 369 places, 873 transitions, 15079 flow. Second operand 10 states and 222 transitions. [2024-06-28 03:22:13,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 947 transitions, 18277 flow [2024-06-28 03:22:17,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 947 transitions, 17805 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:17,390 INFO L231 Difference]: Finished difference. Result has 374 places, 878 transitions, 15665 flow [2024-06-28 03:22:17,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14607, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15665, PETRI_PLACES=374, PETRI_TRANSITIONS=878} [2024-06-28 03:22:17,393 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 329 predicate places. [2024-06-28 03:22:17,393 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 878 transitions, 15665 flow [2024-06-28 03:22:17,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:17,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:17,393 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 03:22:17,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:22:17,394 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:17,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash -187704249, now seen corresponding path program 4 times [2024-06-28 03:22:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:17,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927707884] [2024-06-28 03:22:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:17,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:18,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:18,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927707884] [2024-06-28 03:22:18,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927707884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:18,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:18,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092608690] [2024-06-28 03:22:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:18,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:18,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:18,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:18,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 878 transitions, 15665 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:18,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:18,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:18,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:22,325 INFO L124 PetriNetUnfolderBase]: 7347/11510 cut-off events. [2024-06-28 03:22:22,326 INFO L125 PetriNetUnfolderBase]: For 1852230/1852284 co-relation queries the response was YES. [2024-06-28 03:22:22,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119881 conditions, 11510 events. 7347/11510 cut-off events. For 1852230/1852284 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 73980 event pairs, 1821 based on Foata normal form. 72/11581 useless extension candidates. Maximal degree in co-relation 119710. Up to 8211 conditions per place. [2024-06-28 03:22:22,490 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 525 selfloop transitions, 409 changer transitions 0/948 dead transitions. [2024-06-28 03:22:22,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 948 transitions, 18783 flow [2024-06-28 03:22:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-28 03:22:22,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-06-28 03:22:22,491 INFO L175 Difference]: Start difference. First operand has 374 places, 878 transitions, 15665 flow. Second operand 10 states and 222 transitions. [2024-06-28 03:22:22,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 948 transitions, 18783 flow [2024-06-28 03:22:26,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 948 transitions, 18300 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:26,255 INFO L231 Difference]: Finished difference. Result has 378 places, 880 transitions, 16093 flow [2024-06-28 03:22:26,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15182, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16093, PETRI_PLACES=378, PETRI_TRANSITIONS=880} [2024-06-28 03:22:26,256 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 333 predicate places. [2024-06-28 03:22:26,256 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 880 transitions, 16093 flow [2024-06-28 03:22:26,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:26,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:26,257 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 03:22:26,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:22:26,257 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:26,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash -187699599, now seen corresponding path program 5 times [2024-06-28 03:22:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045303676] [2024-06-28 03:22:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:27,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045303676] [2024-06-28 03:22:27,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045303676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:27,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:27,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:27,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020401646] [2024-06-28 03:22:27,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:27,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:27,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:27,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:27,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:27,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 880 transitions, 16093 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:27,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:27,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:27,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:30,964 INFO L124 PetriNetUnfolderBase]: 7262/11386 cut-off events. [2024-06-28 03:22:30,964 INFO L125 PetriNetUnfolderBase]: For 1811943/1811997 co-relation queries the response was YES. [2024-06-28 03:22:31,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117250 conditions, 11386 events. 7262/11386 cut-off events. For 1811943/1811997 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 73166 event pairs, 1813 based on Foata normal form. 90/11475 useless extension candidates. Maximal degree in co-relation 117077. Up to 8469 conditions per place. [2024-06-28 03:22:31,135 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 531 selfloop transitions, 396 changer transitions 0/941 dead transitions. [2024-06-28 03:22:31,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 941 transitions, 18794 flow [2024-06-28 03:22:31,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2024-06-28 03:22:31,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954545454545455 [2024-06-28 03:22:31,137 INFO L175 Difference]: Start difference. First operand has 378 places, 880 transitions, 16093 flow. Second operand 10 states and 218 transitions. [2024-06-28 03:22:31,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 941 transitions, 18794 flow [2024-06-28 03:22:34,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 941 transitions, 17892 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:34,127 INFO L231 Difference]: Finished difference. Result has 380 places, 880 transitions, 15995 flow [2024-06-28 03:22:34,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15191, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15995, PETRI_PLACES=380, PETRI_TRANSITIONS=880} [2024-06-28 03:22:34,128 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 335 predicate places. [2024-06-28 03:22:34,128 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 880 transitions, 15995 flow [2024-06-28 03:22:34,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 03:22:34,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:34,128 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 03:22:34,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:22:34,128 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 03:22:34,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1203001512, now seen corresponding path program 1 times [2024-06-28 03:22:34,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048439850] [2024-06-28 03:22:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:34,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:35,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:35,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048439850] [2024-06-28 03:22:35,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048439850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:35,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:35,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:35,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405022843] [2024-06-28 03:22:35,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:35,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:35,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:35,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:35,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:35,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:35,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 880 transitions, 15995 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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 03:22:35,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:35,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:35,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:38,748 INFO L124 PetriNetUnfolderBase]: 7686/11966 cut-off events. [2024-06-28 03:22:38,748 INFO L125 PetriNetUnfolderBase]: For 1768088/1768133 co-relation queries the response was YES. [2024-06-28 03:22:38,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121926 conditions, 11966 events. 7686/11966 cut-off events. For 1768088/1768133 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 75970 event pairs, 2182 based on Foata normal form. 39/11988 useless extension candidates. Maximal degree in co-relation 121752. Up to 10526 conditions per place. [2024-06-28 03:22:38,947 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 668 selfloop transitions, 119 changer transitions 0/924 dead transitions. [2024-06-28 03:22:38,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 924 transitions, 18342 flow [2024-06-28 03:22:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 03:22:38,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-28 03:22:38,949 INFO L175 Difference]: Start difference. First operand has 380 places, 880 transitions, 15995 flow. Second operand 8 states and 167 transitions. [2024-06-28 03:22:38,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 924 transitions, 18342 flow [2024-06-28 03:22:43,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 924 transitions, 17768 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:43,140 INFO L231 Difference]: Finished difference. Result has 382 places, 898 transitions, 16074 flow [2024-06-28 03:22:43,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15426, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16074, PETRI_PLACES=382, PETRI_TRANSITIONS=898} [2024-06-28 03:22:43,141 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 337 predicate places. [2024-06-28 03:22:43,141 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 898 transitions, 16074 flow [2024-06-28 03:22:43,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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 03:22:43,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:43,142 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 03:22:43,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:22:43,142 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 03:22:43,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash -744463537, now seen corresponding path program 1 times [2024-06-28 03:22:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192065896] [2024-06-28 03:22:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:43,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192065896] [2024-06-28 03:22:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192065896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:43,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242613196] [2024-06-28 03:22:43,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:43,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:43,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:44,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:22:44,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 898 transitions, 16074 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 03:22:44,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:44,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:22:44,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:47,925 INFO L124 PetriNetUnfolderBase]: 7846/12128 cut-off events. [2024-06-28 03:22:47,925 INFO L125 PetriNetUnfolderBase]: For 1814111/1814148 co-relation queries the response was YES. [2024-06-28 03:22:48,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122568 conditions, 12128 events. 7846/12128 cut-off events. For 1814111/1814148 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 76251 event pairs, 2502 based on Foata normal form. 26/12128 useless extension candidates. Maximal degree in co-relation 122391. Up to 10957 conditions per place. [2024-06-28 03:22:48,131 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 699 selfloop transitions, 109 changer transitions 0/936 dead transitions. [2024-06-28 03:22:48,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 936 transitions, 18346 flow [2024-06-28 03:22:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:22:48,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:22:48,133 INFO L175 Difference]: Start difference. First operand has 382 places, 898 transitions, 16074 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:22:48,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 936 transitions, 18346 flow [2024-06-28 03:22:52,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 936 transitions, 18257 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 03:22:52,304 INFO L231 Difference]: Finished difference. Result has 390 places, 910 transitions, 16483 flow [2024-06-28 03:22:52,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15985, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16483, PETRI_PLACES=390, PETRI_TRANSITIONS=910} [2024-06-28 03:22:52,305 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 345 predicate places. [2024-06-28 03:22:52,305 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 910 transitions, 16483 flow [2024-06-28 03:22:52,305 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 03:22:52,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:52,305 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 03:22:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:22:52,306 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:52,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash 73242703, now seen corresponding path program 6 times [2024-06-28 03:22:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23988392] [2024-06-28 03:22:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:53,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23988392] [2024-06-28 03:22:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23988392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:53,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:53,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493219410] [2024-06-28 03:22:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:53,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:53,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:53,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:53,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 910 transitions, 16483 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:53,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:53,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:53,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:57,706 INFO L124 PetriNetUnfolderBase]: 7613/11937 cut-off events. [2024-06-28 03:22:57,706 INFO L125 PetriNetUnfolderBase]: For 1986770/1986782 co-relation queries the response was YES. [2024-06-28 03:22:57,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125213 conditions, 11937 events. 7613/11937 cut-off events. For 1986770/1986782 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 77558 event pairs, 2038 based on Foata normal form. 34/11966 useless extension candidates. Maximal degree in co-relation 125033. Up to 9449 conditions per place. [2024-06-28 03:22:58,060 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 711 selfloop transitions, 247 changer transitions 0/975 dead transitions. [2024-06-28 03:22:58,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 975 transitions, 19185 flow [2024-06-28 03:22:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-06-28 03:22:58,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49173553719008267 [2024-06-28 03:22:58,084 INFO L175 Difference]: Start difference. First operand has 390 places, 910 transitions, 16483 flow. Second operand 11 states and 238 transitions. [2024-06-28 03:22:58,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 975 transitions, 19185 flow [2024-06-28 03:23:03,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 975 transitions, 19059 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 03:23:03,020 INFO L231 Difference]: Finished difference. Result has 397 places, 914 transitions, 17017 flow [2024-06-28 03:23:03,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16357, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17017, PETRI_PLACES=397, PETRI_TRANSITIONS=914} [2024-06-28 03:23:03,020 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 352 predicate places. [2024-06-28 03:23:03,020 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 914 transitions, 17017 flow [2024-06-28 03:23:03,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:03,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:03,021 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 03:23:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:23:03,021 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:03,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:03,021 INFO L85 PathProgramCache]: Analyzing trace with hash 73362673, now seen corresponding path program 7 times [2024-06-28 03:23:03,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:03,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423944654] [2024-06-28 03:23:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:03,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:04,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:04,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423944654] [2024-06-28 03:23:04,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423944654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:04,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:04,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:04,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137825178] [2024-06-28 03:23:04,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:04,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:04,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 914 transitions, 17017 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:04,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:04,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:04,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:08,392 INFO L124 PetriNetUnfolderBase]: 7749/12181 cut-off events. [2024-06-28 03:23:08,392 INFO L125 PetriNetUnfolderBase]: For 2075741/2075753 co-relation queries the response was YES. [2024-06-28 03:23:08,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128158 conditions, 12181 events. 7749/12181 cut-off events. For 2075741/2075753 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 79767 event pairs, 2153 based on Foata normal form. 46/12222 useless extension candidates. Maximal degree in co-relation 127976. Up to 10306 conditions per place. [2024-06-28 03:23:08,580 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 726 selfloop transitions, 235 changer transitions 0/978 dead transitions. [2024-06-28 03:23:08,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 978 transitions, 19367 flow [2024-06-28 03:23:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:23:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:23:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 266 transitions. [2024-06-28 03:23:08,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46503496503496505 [2024-06-28 03:23:08,581 INFO L175 Difference]: Start difference. First operand has 397 places, 914 transitions, 17017 flow. Second operand 13 states and 266 transitions. [2024-06-28 03:23:08,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 978 transitions, 19367 flow [2024-06-28 03:23:12,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 978 transitions, 19028 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:12,666 INFO L231 Difference]: Finished difference. Result has 403 places, 916 transitions, 17242 flow [2024-06-28 03:23:12,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16682, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17242, PETRI_PLACES=403, PETRI_TRANSITIONS=916} [2024-06-28 03:23:12,681 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-28 03:23:12,681 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 916 transitions, 17242 flow [2024-06-28 03:23:12,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:12,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:12,681 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 03:23:12,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:23:12,682 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:12,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash 73358023, now seen corresponding path program 8 times [2024-06-28 03:23:12,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:12,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833519565] [2024-06-28 03:23:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:12,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:13,851 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 03:23:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833519565] [2024-06-28 03:23:13,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833519565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:13,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:13,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156618131] [2024-06-28 03:23:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:14,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:14,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 916 transitions, 17242 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:14,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:14,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:14,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:18,365 INFO L124 PetriNetUnfolderBase]: 7861/12365 cut-off events. [2024-06-28 03:23:18,366 INFO L125 PetriNetUnfolderBase]: For 2086590/2086602 co-relation queries the response was YES. [2024-06-28 03:23:18,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130528 conditions, 12365 events. 7861/12365 cut-off events. For 2086590/2086602 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 81388 event pairs, 2152 based on Foata normal form. 34/12394 useless extension candidates. Maximal degree in co-relation 130344. Up to 10280 conditions per place. [2024-06-28 03:23:18,568 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 722 selfloop transitions, 242 changer transitions 0/981 dead transitions. [2024-06-28 03:23:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 981 transitions, 19598 flow [2024-06-28 03:23:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 254 transitions. [2024-06-28 03:23:18,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810606060606061 [2024-06-28 03:23:18,570 INFO L175 Difference]: Start difference. First operand has 403 places, 916 transitions, 17242 flow. Second operand 12 states and 254 transitions. [2024-06-28 03:23:18,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 981 transitions, 19598 flow [2024-06-28 03:23:23,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 981 transitions, 19096 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-28 03:23:23,588 INFO L231 Difference]: Finished difference. Result has 403 places, 918 transitions, 17319 flow [2024-06-28 03:23:23,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16740, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17319, PETRI_PLACES=403, PETRI_TRANSITIONS=918} [2024-06-28 03:23:23,588 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-28 03:23:23,588 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 918 transitions, 17319 flow [2024-06-28 03:23:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:23,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:23,589 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 03:23:23,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:23:23,589 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 03:23:23,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash -823728552, now seen corresponding path program 1 times [2024-06-28 03:23:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:23,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180268878] [2024-06-28 03:23:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:24,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180268878] [2024-06-28 03:23:24,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180268878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:24,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:24,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303156469] [2024-06-28 03:23:24,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:24,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:24,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:24,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 918 transitions, 17319 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:23:24,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:24,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:24,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand