./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix011_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/mix011_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix011_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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:22:08,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:22:08,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:22:08,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:22:08,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:22:08,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:22:08,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:22:08,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:22:08,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:22:08,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:22:08,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:22:08,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:22:08,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:22:08,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:22:08,859 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:22:08,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:22:08,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:22:08,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:22:08,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:22:08,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:22:08,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:22:08,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:22:08,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:22:08,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:22:08,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:22:08,861 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:22:08,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:22:08,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:22:08,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:22:08,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:22:08,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:22:08,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:22:08,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:22:08,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:22:08,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:22:08,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:22:08,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:22:08,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:22:08,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:22:08,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:22:08,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:22:08,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:22:08,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:22:08,866 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:22:09,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:22:09,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:22:09,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:22:09,081 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:22:09,082 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:22:09,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:22:10,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:22:10,430 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:22:10,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:22:10,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57900c2f0/99c0e27325f444e9907c17009fcb49ea/FLAG99ea5e601 [2024-06-28 01:22:10,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57900c2f0/99c0e27325f444e9907c17009fcb49ea [2024-06-28 01:22:10,462 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:22:10,463 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:22:10,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix011_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:22:10,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:22:10,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:22:10,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:22:10,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:22:10,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:22:10,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:22:10" (1/2) ... [2024-06-28 01:22:10,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f63d081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:10, skipping insertion in model container [2024-06-28 01:22:10,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:22:10" (1/2) ... [2024-06-28 01:22:10,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5021d27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:10, skipping insertion in model container [2024-06-28 01:22:10,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:10" (2/2) ... [2024-06-28 01:22:10,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f63d081 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:10, skipping insertion in model container [2024-06-28 01:22:10,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:10" (2/2) ... [2024-06-28 01:22:10,649 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:22:10,727 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:22:10,728 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$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)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:22:10,728 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:22:10,729 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$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)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:22:10,729 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:22:10,729 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 01:22:10,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:22:10,924 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-28 01:22:11,075 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:22:11,084 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:22:11,121 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:22:11,222 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:22:11,266 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:22:11,267 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:11 WrapperNode [2024-06-28 01:22:11,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:22:11,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:22:11,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:22:11,268 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:22:11,274 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,303 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,333 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-28 01:22:11,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:22:11,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:22:11,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:22:11,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:22:11,350 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,351 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,354 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,367 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:22:11,368 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,368 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,381 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,382 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,409 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,410 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:22:11,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:22:11,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:22:11,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:22:11,415 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 01:22:11" (1/1) ... [2024-06-28 01:22:11,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:22:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:22:11,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:22:11,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:22:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:22:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:22:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:22:11,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:22:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:22:11,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:22:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:22:11,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:22:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:22:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:22:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:22:11,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:22:11,585 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:22:11,771 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:22:11,775 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:22:12,078 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:22:12,081 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:22:12,229 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:22:12,229 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:22:12,230 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:22:12 BoogieIcfgContainer [2024-06-28 01:22:12,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:22:12,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:22:12,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:22:12,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:22:12,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:22:10" (1/4) ... [2024-06-28 01:22:12,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3556af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:22:12, skipping insertion in model container [2024-06-28 01:22:12,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:10" (2/4) ... [2024-06-28 01:22:12,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3556af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:22:12, skipping insertion in model container [2024-06-28 01:22:12,238 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 01:22:11" (3/4) ... [2024-06-28 01:22:12,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3556af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:22:12, skipping insertion in model container [2024-06-28 01:22:12,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:22:12" (4/4) ... [2024-06-28 01:22:12,239 INFO L112 eAbstractionObserver]: Analyzing ICFG mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:22:12,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:22:12,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:22:12,254 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:22:12,321 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:22:12,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:22:12,380 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-28 01:22:12,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:22:12,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-28 01:22:12,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:22:12,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-28 01:22:12,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:22:12,409 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;@2174063f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:22:12,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:22:12,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:22:12,413 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:22:12,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:22:12,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:12,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:22:12,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:12,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 347829558, now seen corresponding path program 1 times [2024-06-28 01:22:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:12,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891974413] [2024-06-28 01:22:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:12,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891974413] [2024-06-28 01:22:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891974413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:22:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607268546] [2024-06-28 01:22:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:13,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:22:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:22:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:22:13,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:13,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:13,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:13,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:13,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:14,478 INFO L124 PetriNetUnfolderBase]: 4500/7459 cut-off events. [2024-06-28 01:22:14,478 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:22:14,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14022 conditions, 7459 events. 4500/7459 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50374 event pairs, 3527 based on Foata normal form. 211/7043 useless extension candidates. Maximal degree in co-relation 14010. Up to 6446 conditions per place. [2024-06-28 01:22:14,517 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 42 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 01:22:14,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 229 flow [2024-06-28 01:22:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:22:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:22:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-28 01:22:14,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6802721088435374 [2024-06-28 01:22:14,529 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 100 transitions. [2024-06-28 01:22:14,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 229 flow [2024-06-28 01:22:14,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:14,537 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-28 01:22:14,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 01:22:14,542 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:22:14,542 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-28 01:22:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:14,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:14,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:22:14,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:22:14,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:14,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash 347829967, now seen corresponding path program 1 times [2024-06-28 01:22:14,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:14,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248735160] [2024-06-28 01:22:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:14,618 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 01:22:14,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248735160] [2024-06-28 01:22:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248735160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:14,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:14,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:22:14,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404603035] [2024-06-28 01:22:14,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:14,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:22:14,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:22:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:22:14,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-28 01:22:14,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:14,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:14,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-28 01:22:14,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:14,888 INFO L124 PetriNetUnfolderBase]: 996/1925 cut-off events. [2024-06-28 01:22:14,888 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:22:14,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 1925 events. 996/1925 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13013 event pairs, 655 based on Foata normal form. 0/1776 useless extension candidates. Maximal degree in co-relation 3677. Up to 1277 conditions per place. [2024-06-28 01:22:14,899 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 35 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-06-28 01:22:14,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 236 flow [2024-06-28 01:22:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:22:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:22:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-28 01:22:14,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-28 01:22:14,902 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 3 states and 116 transitions. [2024-06-28 01:22:14,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 236 flow [2024-06-28 01:22:14,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:14,904 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-06-28 01:22:14,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 01:22:14,905 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:22:14,906 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-06-28 01:22:14,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:14,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:14,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:22:14,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:14,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:14,914 INFO L85 PathProgramCache]: Analyzing trace with hash -743197836, now seen corresponding path program 1 times [2024-06-28 01:22:14,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:14,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429240884] [2024-06-28 01:22:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:14,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:15,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429240884] [2024-06-28 01:22:15,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429240884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:15,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:15,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:22:15,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371636574] [2024-06-28 01:22:15,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:15,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:22:15,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:22:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:22:15,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:15,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:15,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:15,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:15,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:16,190 INFO L124 PetriNetUnfolderBase]: 3821/6250 cut-off events. [2024-06-28 01:22:16,190 INFO L125 PetriNetUnfolderBase]: For 1408/1408 co-relation queries the response was YES. [2024-06-28 01:22:16,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13175 conditions, 6250 events. 3821/6250 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 40030 event pairs, 2471 based on Foata normal form. 3/5997 useless extension candidates. Maximal degree in co-relation 13162. Up to 5470 conditions per place. [2024-06-28 01:22:16,218 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 50 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2024-06-28 01:22:16,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 318 flow [2024-06-28 01:22:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:22:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:22:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-28 01:22:16,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-06-28 01:22:16,220 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 4 states and 124 transitions. [2024-06-28 01:22:16,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 318 flow [2024-06-28 01:22:16,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:16,222 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 187 flow [2024-06-28 01:22:16,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 01:22:16,222 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-28 01:22:16,223 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 187 flow [2024-06-28 01:22:16,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:16,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:16,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:22:16,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:16,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1564294907, now seen corresponding path program 1 times [2024-06-28 01:22:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813467112] [2024-06-28 01:22:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:16,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:16,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813467112] [2024-06-28 01:22:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813467112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:16,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:16,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:22:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619432006] [2024-06-28 01:22:17,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:22:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:22:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:22:17,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:17,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:17,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:17,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:17,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:17,643 INFO L124 PetriNetUnfolderBase]: 3310/5617 cut-off events. [2024-06-28 01:22:17,644 INFO L125 PetriNetUnfolderBase]: For 2400/2400 co-relation queries the response was YES. [2024-06-28 01:22:17,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 5617 events. 3310/5617 cut-off events. For 2400/2400 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 36542 event pairs, 1990 based on Foata normal form. 5/5422 useless extension candidates. Maximal degree in co-relation 12667. Up to 4663 conditions per place. [2024-06-28 01:22:17,671 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 66 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-06-28 01:22:17,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 497 flow [2024-06-28 01:22:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:22:17,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:22:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-28 01:22:17,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6489795918367347 [2024-06-28 01:22:17,673 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 187 flow. Second operand 5 states and 159 transitions. [2024-06-28 01:22:17,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 497 flow [2024-06-28 01:22:17,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 486 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:17,677 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 301 flow [2024-06-28 01:22:17,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-28 01:22:17,677 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-28 01:22:17,678 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 301 flow [2024-06-28 01:22:17,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:17,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:17,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:17,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:22:17,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:17,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1248500301, now seen corresponding path program 1 times [2024-06-28 01:22:17,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:17,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356450793] [2024-06-28 01:22:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:17,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:18,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356450793] [2024-06-28 01:22:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356450793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183386634] [2024-06-28 01:22:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:18,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:18,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:18,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:18,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:18,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:19,425 INFO L124 PetriNetUnfolderBase]: 3332/5173 cut-off events. [2024-06-28 01:22:19,426 INFO L125 PetriNetUnfolderBase]: For 5702/5705 co-relation queries the response was YES. [2024-06-28 01:22:19,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14308 conditions, 5173 events. 3332/5173 cut-off events. For 5702/5705 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30689 event pairs, 1185 based on Foata normal form. 7/5105 useless extension candidates. Maximal degree in co-relation 14289. Up to 4629 conditions per place. [2024-06-28 01:22:19,453 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 78 selfloop transitions, 33 changer transitions 0/124 dead transitions. [2024-06-28 01:22:19,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 124 transitions, 755 flow [2024-06-28 01:22:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-28 01:22:19,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2024-06-28 01:22:19,454 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 301 flow. Second operand 6 states and 190 transitions. [2024-06-28 01:22:19,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 124 transitions, 755 flow [2024-06-28 01:22:19,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 747 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:22:19,462 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 511 flow [2024-06-28 01:22:19,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-28 01:22:19,464 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-28 01:22:19,465 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 511 flow [2024-06-28 01:22:19,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:19,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:19,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:19,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:22:19,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:19,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash -48802076, now seen corresponding path program 1 times [2024-06-28 01:22:19,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:19,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507205411] [2024-06-28 01:22:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:19,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:20,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507205411] [2024-06-28 01:22:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507205411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:20,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:20,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:20,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824252217] [2024-06-28 01:22:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:20,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:20,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:20,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:20,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:20,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:20,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:20,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:21,632 INFO L124 PetriNetUnfolderBase]: 3359/5209 cut-off events. [2024-06-28 01:22:21,632 INFO L125 PetriNetUnfolderBase]: For 11342/11348 co-relation queries the response was YES. [2024-06-28 01:22:21,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16797 conditions, 5209 events. 3359/5209 cut-off events. For 11342/11348 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30803 event pairs, 917 based on Foata normal form. 14/5150 useless extension candidates. Maximal degree in co-relation 16772. Up to 4594 conditions per place. [2024-06-28 01:22:21,670 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 85 selfloop transitions, 36 changer transitions 0/134 dead transitions. [2024-06-28 01:22:21,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 134 transitions, 951 flow [2024-06-28 01:22:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-28 01:22:21,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2024-06-28 01:22:21,671 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 511 flow. Second operand 7 states and 216 transitions. [2024-06-28 01:22:21,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 134 transitions, 951 flow [2024-06-28 01:22:21,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 917 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-28 01:22:21,681 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 581 flow [2024-06-28 01:22:21,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-06-28 01:22:21,683 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-28 01:22:21,683 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 581 flow [2024-06-28 01:22:21,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:21,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:21,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:21,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:22:21,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:21,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1031306261, now seen corresponding path program 1 times [2024-06-28 01:22:21,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940399511] [2024-06-28 01:22:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:22,250 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 01:22:22,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:22,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940399511] [2024-06-28 01:22:22,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940399511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:22,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:22,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:22,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719246286] [2024-06-28 01:22:22,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:22,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:22,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:22,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:22,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:22,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 581 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 01:22:22,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:22,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:22,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:23,114 INFO L124 PetriNetUnfolderBase]: 3905/6552 cut-off events. [2024-06-28 01:22:23,115 INFO L125 PetriNetUnfolderBase]: For 14333/14333 co-relation queries the response was YES. [2024-06-28 01:22:23,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19848 conditions, 6552 events. 3905/6552 cut-off events. For 14333/14333 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 42892 event pairs, 1648 based on Foata normal form. 2/6327 useless extension candidates. Maximal degree in co-relation 19819. Up to 5591 conditions per place. [2024-06-28 01:22:23,150 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 73 selfloop transitions, 16 changer transitions 0/100 dead transitions. [2024-06-28 01:22:23,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 100 transitions, 817 flow [2024-06-28 01:22:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:22:23,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-28 01:22:23,152 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 581 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:22:23,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 100 transitions, 817 flow [2024-06-28 01:22:23,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 725 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:23,160 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 558 flow [2024-06-28 01:22:23,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-06-28 01:22:23,161 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-28 01:22:23,161 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 558 flow [2024-06-28 01:22:23,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 01:22:23,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:23,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:23,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:22:23,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:23,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1906615604, now seen corresponding path program 1 times [2024-06-28 01:22:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:23,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603793500] [2024-06-28 01:22:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:23,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:23,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603793500] [2024-06-28 01:22:23,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603793500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:23,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:23,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:23,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883287392] [2024-06-28 01:22:23,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:23,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:23,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:23,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:23,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:23,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:23,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:24,754 INFO L124 PetriNetUnfolderBase]: 4580/7652 cut-off events. [2024-06-28 01:22:24,754 INFO L125 PetriNetUnfolderBase]: For 16652/16652 co-relation queries the response was YES. [2024-06-28 01:22:24,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22529 conditions, 7652 events. 4580/7652 cut-off events. For 16652/16652 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50572 event pairs, 1976 based on Foata normal form. 2/7436 useless extension candidates. Maximal degree in co-relation 22497. Up to 6523 conditions per place. [2024-06-28 01:22:24,797 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 83 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-06-28 01:22:24,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 840 flow [2024-06-28 01:22:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:22:24,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-28 01:22:24,798 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 558 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:22:24,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 840 flow [2024-06-28 01:22:24,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 798 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:24,808 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 587 flow [2024-06-28 01:22:24,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=587, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-28 01:22:24,809 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-28 01:22:24,809 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 587 flow [2024-06-28 01:22:24,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:24,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:24,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:24,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:22:24,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:24,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1532912995, now seen corresponding path program 1 times [2024-06-28 01:22:24,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137017277] [2024-06-28 01:22:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137017277] [2024-06-28 01:22:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137017277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:25,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880768297] [2024-06-28 01:22:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:25,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:25,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:25,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 587 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:25,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:25,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:25,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:26,310 INFO L124 PetriNetUnfolderBase]: 4347/7257 cut-off events. [2024-06-28 01:22:26,310 INFO L125 PetriNetUnfolderBase]: For 20223/20232 co-relation queries the response was YES. [2024-06-28 01:22:26,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22781 conditions, 7257 events. 4347/7257 cut-off events. For 20223/20232 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 47634 event pairs, 1601 based on Foata normal form. 10/7050 useless extension candidates. Maximal degree in co-relation 22749. Up to 6102 conditions per place. [2024-06-28 01:22:26,352 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 85 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2024-06-28 01:22:26,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 939 flow [2024-06-28 01:22:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 01:22:26,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 01:22:26,354 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 587 flow. Second operand 6 states and 161 transitions. [2024-06-28 01:22:26,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 939 flow [2024-06-28 01:22:26,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 896 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:26,365 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 632 flow [2024-06-28 01:22:26,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-06-28 01:22:26,366 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-28 01:22:26,366 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 632 flow [2024-06-28 01:22:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:26,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:26,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:22:26,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:26,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1052156329, now seen corresponding path program 2 times [2024-06-28 01:22:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945889767] [2024-06-28 01:22:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:26,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:27,067 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 01:22:27,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:27,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945889767] [2024-06-28 01:22:27,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945889767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:27,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:27,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280359038] [2024-06-28 01:22:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:27,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:27,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:27,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:27,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 632 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:27,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:27,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:27,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:28,042 INFO L124 PetriNetUnfolderBase]: 4341/7381 cut-off events. [2024-06-28 01:22:28,042 INFO L125 PetriNetUnfolderBase]: For 22416/22416 co-relation queries the response was YES. [2024-06-28 01:22:28,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23231 conditions, 7381 events. 4341/7381 cut-off events. For 22416/22416 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 49790 event pairs, 1811 based on Foata normal form. 2/7155 useless extension candidates. Maximal degree in co-relation 23198. Up to 6204 conditions per place. [2024-06-28 01:22:28,090 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 86 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-28 01:22:28,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 888 flow [2024-06-28 01:22:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 01:22:28,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2024-06-28 01:22:28,092 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 632 flow. Second operand 6 states and 151 transitions. [2024-06-28 01:22:28,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 888 flow [2024-06-28 01:22:28,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 854 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:28,107 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 634 flow [2024-06-28 01:22:28,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-06-28 01:22:28,108 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-28 01:22:28,108 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 634 flow [2024-06-28 01:22:28,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:28,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:28,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:28,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:22:28,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:28,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 193290696, now seen corresponding path program 1 times [2024-06-28 01:22:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270229504] [2024-06-28 01:22:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:28,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270229504] [2024-06-28 01:22:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270229504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:28,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:28,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63750553] [2024-06-28 01:22:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:28,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:28,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:28,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:28,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:28,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:28,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:28,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:29,990 INFO L124 PetriNetUnfolderBase]: 4573/7607 cut-off events. [2024-06-28 01:22:29,990 INFO L125 PetriNetUnfolderBase]: For 24601/24601 co-relation queries the response was YES. [2024-06-28 01:22:30,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24108 conditions, 7607 events. 4573/7607 cut-off events. For 24601/24601 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 49967 event pairs, 1886 based on Foata normal form. 4/7394 useless extension candidates. Maximal degree in co-relation 24074. Up to 6475 conditions per place. [2024-06-28 01:22:30,032 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 95 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2024-06-28 01:22:30,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 126 transitions, 974 flow [2024-06-28 01:22:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:22:30,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-06-28 01:22:30,034 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 634 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:22:30,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 126 transitions, 974 flow [2024-06-28 01:22:30,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 126 transitions, 913 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:30,065 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 653 flow [2024-06-28 01:22:30,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2024-06-28 01:22:30,066 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-28 01:22:30,066 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 653 flow [2024-06-28 01:22:30,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:30,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:30,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:30,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:22:30,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:30,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1971858884, now seen corresponding path program 1 times [2024-06-28 01:22:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404199661] [2024-06-28 01:22:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:30,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:30,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:30,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404199661] [2024-06-28 01:22:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404199661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017980016] [2024-06-28 01:22:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:30,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:30,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:31,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:31,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:31,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:31,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:31,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:31,904 INFO L124 PetriNetUnfolderBase]: 4792/7863 cut-off events. [2024-06-28 01:22:31,904 INFO L125 PetriNetUnfolderBase]: For 29678/29687 co-relation queries the response was YES. [2024-06-28 01:22:31,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26577 conditions, 7863 events. 4792/7863 cut-off events. For 29678/29687 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 50549 event pairs, 1694 based on Foata normal form. 6/7647 useless extension candidates. Maximal degree in co-relation 26543. Up to 6615 conditions per place. [2024-06-28 01:22:31,952 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 110 selfloop transitions, 31 changer transitions 0/151 dead transitions. [2024-06-28 01:22:31,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 1252 flow [2024-06-28 01:22:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:22:31,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-06-28 01:22:31,955 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 653 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:22:31,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 1252 flow [2024-06-28 01:22:31,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 151 transitions, 1193 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:31,976 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 888 flow [2024-06-28 01:22:31,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-06-28 01:22:31,978 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2024-06-28 01:22:31,978 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 888 flow [2024-06-28 01:22:31,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:31,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:31,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:31,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:22:31,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:31,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:31,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1742625044, now seen corresponding path program 2 times [2024-06-28 01:22:31,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:31,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660834283] [2024-06-28 01:22:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:31,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:32,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:32,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660834283] [2024-06-28 01:22:32,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660834283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:32,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:32,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:32,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114933689] [2024-06-28 01:22:32,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:32,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:32,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:32,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:32,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 888 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:32,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:32,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:32,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:33,774 INFO L124 PetriNetUnfolderBase]: 4815/8041 cut-off events. [2024-06-28 01:22:33,775 INFO L125 PetriNetUnfolderBase]: For 36782/36782 co-relation queries the response was YES. [2024-06-28 01:22:33,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28912 conditions, 8041 events. 4815/8041 cut-off events. For 36782/36782 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 53182 event pairs, 1909 based on Foata normal form. 2/7817 useless extension candidates. Maximal degree in co-relation 28874. Up to 6842 conditions per place. [2024-06-28 01:22:33,933 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 116 selfloop transitions, 18 changer transitions 0/144 dead transitions. [2024-06-28 01:22:33,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 144 transitions, 1260 flow [2024-06-28 01:22:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:22:33,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-28 01:22:33,935 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 888 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:22:33,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 144 transitions, 1260 flow [2024-06-28 01:22:33,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 1235 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:33,957 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 945 flow [2024-06-28 01:22:33,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=945, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2024-06-28 01:22:33,958 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 01:22:33,958 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 945 flow [2024-06-28 01:22:33,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:33,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:33,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:33,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:22:33,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:33,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1696769618, now seen corresponding path program 3 times [2024-06-28 01:22:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:33,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135793013] [2024-06-28 01:22:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:33,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135793013] [2024-06-28 01:22:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135793013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:34,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:34,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:34,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360407741] [2024-06-28 01:22:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:34,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:34,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:34,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:34,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:34,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 945 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:34,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:34,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:34,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:35,830 INFO L124 PetriNetUnfolderBase]: 4810/8033 cut-off events. [2024-06-28 01:22:35,831 INFO L125 PetriNetUnfolderBase]: For 41123/41123 co-relation queries the response was YES. [2024-06-28 01:22:35,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29462 conditions, 8033 events. 4810/8033 cut-off events. For 41123/41123 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 53190 event pairs, 1907 based on Foata normal form. 2/7809 useless extension candidates. Maximal degree in co-relation 29422. Up to 6803 conditions per place. [2024-06-28 01:22:35,886 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 116 selfloop transitions, 23 changer transitions 0/149 dead transitions. [2024-06-28 01:22:35,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 149 transitions, 1343 flow [2024-06-28 01:22:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:22:35,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-06-28 01:22:35,888 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 945 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:22:35,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 149 transitions, 1343 flow [2024-06-28 01:22:35,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 149 transitions, 1290 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:35,916 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 990 flow [2024-06-28 01:22:35,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=990, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2024-06-28 01:22:35,917 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-28 01:22:35,917 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 990 flow [2024-06-28 01:22:35,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:35,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:35,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:22:35,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:35,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash -981658196, now seen corresponding path program 4 times [2024-06-28 01:22:35,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:35,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274210387] [2024-06-28 01:22:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274210387] [2024-06-28 01:22:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274210387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:36,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:36,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:36,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120165194] [2024-06-28 01:22:36,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:36,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:36,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:36,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:36,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:36,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:36,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 990 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:36,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:36,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:36,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:38,126 INFO L124 PetriNetUnfolderBase]: 5126/8535 cut-off events. [2024-06-28 01:22:38,126 INFO L125 PetriNetUnfolderBase]: For 48857/48863 co-relation queries the response was YES. [2024-06-28 01:22:38,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32693 conditions, 8535 events. 5126/8535 cut-off events. For 48857/48863 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 56436 event pairs, 1855 based on Foata normal form. 5/8303 useless extension candidates. Maximal degree in co-relation 32652. Up to 6754 conditions per place. [2024-06-28 01:22:38,200 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 150 selfloop transitions, 76 changer transitions 0/236 dead transitions. [2024-06-28 01:22:38,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 236 transitions, 2436 flow [2024-06-28 01:22:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 01:22:38,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-28 01:22:38,207 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 990 flow. Second operand 8 states and 212 transitions. [2024-06-28 01:22:38,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 236 transitions, 2436 flow [2024-06-28 01:22:38,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 236 transitions, 2286 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:38,267 INFO L231 Difference]: Finished difference. Result has 108 places, 173 transitions, 1713 flow [2024-06-28 01:22:38,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1713, PETRI_PLACES=108, PETRI_TRANSITIONS=173} [2024-06-28 01:22:38,268 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-28 01:22:38,268 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 173 transitions, 1713 flow [2024-06-28 01:22:38,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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 01:22:38,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:38,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:38,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:22:38,269 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:38,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1055262945, now seen corresponding path program 1 times [2024-06-28 01:22:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:38,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584036114] [2024-06-28 01:22:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:38,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:38,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584036114] [2024-06-28 01:22:38,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584036114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:38,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:38,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:38,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839261273] [2024-06-28 01:22:38,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:38,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:38,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:38,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:38,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:38,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:22:38,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 173 transitions, 1713 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:38,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:38,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:22:38,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:40,066 INFO L124 PetriNetUnfolderBase]: 6353/10455 cut-off events. [2024-06-28 01:22:40,066 INFO L125 PetriNetUnfolderBase]: For 74119/74143 co-relation queries the response was YES. [2024-06-28 01:22:40,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42218 conditions, 10455 events. 6353/10455 cut-off events. For 74119/74143 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 69877 event pairs, 2603 based on Foata normal form. 1/10130 useless extension candidates. Maximal degree in co-relation 42173. Up to 8976 conditions per place. [2024-06-28 01:22:40,152 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 151 selfloop transitions, 13 changer transitions 0/190 dead transitions. [2024-06-28 01:22:40,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 190 transitions, 2115 flow [2024-06-28 01:22:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 01:22:40,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-28 01:22:40,154 INFO L175 Difference]: Start difference. First operand has 108 places, 173 transitions, 1713 flow. Second operand 6 states and 129 transitions. [2024-06-28 01:22:40,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 190 transitions, 2115 flow [2024-06-28 01:22:40,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 190 transitions, 2047 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:40,249 INFO L231 Difference]: Finished difference. Result has 111 places, 176 transitions, 1712 flow [2024-06-28 01:22:40,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1712, PETRI_PLACES=111, PETRI_TRANSITIONS=176} [2024-06-28 01:22:40,250 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-28 01:22:40,250 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 176 transitions, 1712 flow [2024-06-28 01:22:40,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:40,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:40,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:40,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:22:40,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:40,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash 722486384, now seen corresponding path program 1 times [2024-06-28 01:22:40,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:40,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829698494] [2024-06-28 01:22:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:40,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:41,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:41,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829698494] [2024-06-28 01:22:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829698494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:41,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127417065] [2024-06-28 01:22:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:41,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:41,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 176 transitions, 1712 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:41,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:41,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:41,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:42,591 INFO L124 PetriNetUnfolderBase]: 5187/8674 cut-off events. [2024-06-28 01:22:42,592 INFO L125 PetriNetUnfolderBase]: For 70700/70730 co-relation queries the response was YES. [2024-06-28 01:22:42,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37312 conditions, 8674 events. 5187/8674 cut-off events. For 70700/70730 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 58572 event pairs, 1805 based on Foata normal form. 6/8413 useless extension candidates. Maximal degree in co-relation 37265. Up to 6851 conditions per place. [2024-06-28 01:22:42,670 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 148 selfloop transitions, 57 changer transitions 0/234 dead transitions. [2024-06-28 01:22:42,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 234 transitions, 2368 flow [2024-06-28 01:22:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:22:42,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2024-06-28 01:22:42,672 INFO L175 Difference]: Start difference. First operand has 111 places, 176 transitions, 1712 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:22:42,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 234 transitions, 2368 flow [2024-06-28 01:22:42,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 234 transitions, 2327 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:42,750 INFO L231 Difference]: Finished difference. Result has 116 places, 183 transitions, 1871 flow [2024-06-28 01:22:42,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1871, PETRI_PLACES=116, PETRI_TRANSITIONS=183} [2024-06-28 01:22:42,751 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-28 01:22:42,751 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 183 transitions, 1871 flow [2024-06-28 01:22:42,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:42,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:42,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:42,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:22:42,751 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:42,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash 833244145, now seen corresponding path program 1 times [2024-06-28 01:22:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:42,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511465526] [2024-06-28 01:22:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:43,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:43,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511465526] [2024-06-28 01:22:43,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511465526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:43,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:43,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939507511] [2024-06-28 01:22:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:43,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:43,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:43,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 183 transitions, 1871 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:43,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:43,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:43,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:44,749 INFO L124 PetriNetUnfolderBase]: 5578/9117 cut-off events. [2024-06-28 01:22:44,750 INFO L125 PetriNetUnfolderBase]: For 83012/83018 co-relation queries the response was YES. [2024-06-28 01:22:44,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41555 conditions, 9117 events. 5578/9117 cut-off events. For 83012/83018 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 59947 event pairs, 1975 based on Foata normal form. 6/8867 useless extension candidates. Maximal degree in co-relation 41506. Up to 7251 conditions per place. [2024-06-28 01:22:44,829 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 129 selfloop transitions, 108 changer transitions 0/248 dead transitions. [2024-06-28 01:22:44,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 248 transitions, 2950 flow [2024-06-28 01:22:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:22:44,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-28 01:22:44,831 INFO L175 Difference]: Start difference. First operand has 116 places, 183 transitions, 1871 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:22:44,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 248 transitions, 2950 flow [2024-06-28 01:22:44,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 248 transitions, 2832 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:44,914 INFO L231 Difference]: Finished difference. Result has 118 places, 204 transitions, 2308 flow [2024-06-28 01:22:44,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2308, PETRI_PLACES=118, PETRI_TRANSITIONS=204} [2024-06-28 01:22:44,915 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2024-06-28 01:22:44,915 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 204 transitions, 2308 flow [2024-06-28 01:22:44,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:44,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:44,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:22:44,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:44,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:44,916 INFO L85 PathProgramCache]: Analyzing trace with hash 833244362, now seen corresponding path program 1 times [2024-06-28 01:22:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931910842] [2024-06-28 01:22:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:44,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931910842] [2024-06-28 01:22:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931910842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:45,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249873442] [2024-06-28 01:22:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:45,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:45,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:45,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 204 transitions, 2308 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:45,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:45,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:45,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:47,037 INFO L124 PetriNetUnfolderBase]: 5653/8930 cut-off events. [2024-06-28 01:22:47,037 INFO L125 PetriNetUnfolderBase]: For 91361/91367 co-relation queries the response was YES. [2024-06-28 01:22:47,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42926 conditions, 8930 events. 5653/8930 cut-off events. For 91361/91367 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 56583 event pairs, 1759 based on Foata normal form. 9/8770 useless extension candidates. Maximal degree in co-relation 42876. Up to 7000 conditions per place. [2024-06-28 01:22:47,107 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 150 selfloop transitions, 107 changer transitions 0/268 dead transitions. [2024-06-28 01:22:47,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 268 transitions, 3194 flow [2024-06-28 01:22:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 01:22:47,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-28 01:22:47,110 INFO L175 Difference]: Start difference. First operand has 118 places, 204 transitions, 2308 flow. Second operand 8 states and 212 transitions. [2024-06-28 01:22:47,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 268 transitions, 3194 flow [2024-06-28 01:22:47,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 268 transitions, 2982 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:47,231 INFO L231 Difference]: Finished difference. Result has 124 places, 215 transitions, 2454 flow [2024-06-28 01:22:47,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2454, PETRI_PLACES=124, PETRI_TRANSITIONS=215} [2024-06-28 01:22:47,232 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-06-28 01:22:47,232 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 215 transitions, 2454 flow [2024-06-28 01:22:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:47,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:47,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:22:47,232 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:47,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash 44425207, now seen corresponding path program 2 times [2024-06-28 01:22:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:47,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662165329] [2024-06-28 01:22:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:47,992 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 01:22:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662165329] [2024-06-28 01:22:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662165329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:47,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:47,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103322799] [2024-06-28 01:22:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:47,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:48,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:48,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 215 transitions, 2454 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:48,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:48,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:48,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:49,221 INFO L124 PetriNetUnfolderBase]: 5640/8921 cut-off events. [2024-06-28 01:22:49,223 INFO L125 PetriNetUnfolderBase]: For 103102/103118 co-relation queries the response was YES. [2024-06-28 01:22:49,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44843 conditions, 8921 events. 5640/8921 cut-off events. For 103102/103118 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 56694 event pairs, 1838 based on Foata normal form. 16/8764 useless extension candidates. Maximal degree in co-relation 44791. Up to 7329 conditions per place. [2024-06-28 01:22:49,308 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 136 selfloop transitions, 113 changer transitions 0/260 dead transitions. [2024-06-28 01:22:49,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 260 transitions, 3198 flow [2024-06-28 01:22:49,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:22:49,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422740524781341 [2024-06-28 01:22:49,309 INFO L175 Difference]: Start difference. First operand has 124 places, 215 transitions, 2454 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:22:49,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 260 transitions, 3198 flow [2024-06-28 01:22:49,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 260 transitions, 3055 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:49,481 INFO L231 Difference]: Finished difference. Result has 128 places, 215 transitions, 2554 flow [2024-06-28 01:22:49,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2554, PETRI_PLACES=128, PETRI_TRANSITIONS=215} [2024-06-28 01:22:49,482 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-28 01:22:49,482 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 215 transitions, 2554 flow [2024-06-28 01:22:49,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:49,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:49,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:49,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:22:49,483 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:49,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1804954280, now seen corresponding path program 2 times [2024-06-28 01:22:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:49,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983961308] [2024-06-28 01:22:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983961308] [2024-06-28 01:22:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983961308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:50,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745569105] [2024-06-28 01:22:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:50,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:50,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:50,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 215 transitions, 2554 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:50,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:50,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:50,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:51,613 INFO L124 PetriNetUnfolderBase]: 5681/9006 cut-off events. [2024-06-28 01:22:51,613 INFO L125 PetriNetUnfolderBase]: For 111396/111396 co-relation queries the response was YES. [2024-06-28 01:22:51,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45817 conditions, 9006 events. 5681/9006 cut-off events. For 111396/111396 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57422 event pairs, 1905 based on Foata normal form. 4/8835 useless extension candidates. Maximal degree in co-relation 45762. Up to 7815 conditions per place. [2024-06-28 01:22:51,702 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 218 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2024-06-28 01:22:51,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 268 transitions, 3410 flow [2024-06-28 01:22:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:22:51,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-28 01:22:51,704 INFO L175 Difference]: Start difference. First operand has 128 places, 215 transitions, 2554 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:22:51,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 268 transitions, 3410 flow [2024-06-28 01:22:51,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 268 transitions, 3187 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:51,841 INFO L231 Difference]: Finished difference. Result has 131 places, 221 transitions, 2513 flow [2024-06-28 01:22:51,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2513, PETRI_PLACES=131, PETRI_TRANSITIONS=221} [2024-06-28 01:22:51,842 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-28 01:22:51,842 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 221 transitions, 2513 flow [2024-06-28 01:22:51,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:51,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:51,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:51,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:22:51,842 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:51,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1068792902, now seen corresponding path program 3 times [2024-06-28 01:22:51,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:51,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123867253] [2024-06-28 01:22:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:51,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123867253] [2024-06-28 01:22:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123867253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:52,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:52,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456295509] [2024-06-28 01:22:52,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:52,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:52,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 221 transitions, 2513 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:52,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:52,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:52,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:54,081 INFO L124 PetriNetUnfolderBase]: 5727/9100 cut-off events. [2024-06-28 01:22:54,081 INFO L125 PetriNetUnfolderBase]: For 119831/119831 co-relation queries the response was YES. [2024-06-28 01:22:54,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46454 conditions, 9100 events. 5727/9100 cut-off events. For 119831/119831 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 58204 event pairs, 1914 based on Foata normal form. 4/8925 useless extension candidates. Maximal degree in co-relation 46398. Up to 8014 conditions per place. [2024-06-28 01:22:54,165 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 226 selfloop transitions, 22 changer transitions 0/259 dead transitions. [2024-06-28 01:22:54,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 259 transitions, 3173 flow [2024-06-28 01:22:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:22:54,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-06-28 01:22:54,168 INFO L175 Difference]: Start difference. First operand has 131 places, 221 transitions, 2513 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:22:54,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 259 transitions, 3173 flow [2024-06-28 01:22:54,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 259 transitions, 3106 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:54,308 INFO L231 Difference]: Finished difference. Result has 135 places, 224 transitions, 2554 flow [2024-06-28 01:22:54,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2554, PETRI_PLACES=135, PETRI_TRANSITIONS=224} [2024-06-28 01:22:54,308 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-28 01:22:54,308 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 224 transitions, 2554 flow [2024-06-28 01:22:54,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:54,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:54,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:54,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:22:54,309 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:54,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash 957893006, now seen corresponding path program 4 times [2024-06-28 01:22:54,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:54,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699783983] [2024-06-28 01:22:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:54,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:55,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:55,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699783983] [2024-06-28 01:22:55,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699783983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:55,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:55,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064205796] [2024-06-28 01:22:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:55,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:55,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:55,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:55,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 224 transitions, 2554 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:55,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:55,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:55,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:56,429 INFO L124 PetriNetUnfolderBase]: 5717/9087 cut-off events. [2024-06-28 01:22:56,429 INFO L125 PetriNetUnfolderBase]: For 124450/124450 co-relation queries the response was YES. [2024-06-28 01:22:56,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46532 conditions, 9087 events. 5717/9087 cut-off events. For 124450/124450 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 58155 event pairs, 1903 based on Foata normal form. 4/8912 useless extension candidates. Maximal degree in co-relation 46475. Up to 7938 conditions per place. [2024-06-28 01:22:56,510 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 223 selfloop transitions, 31 changer transitions 0/265 dead transitions. [2024-06-28 01:22:56,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 265 transitions, 3211 flow [2024-06-28 01:22:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:22:56,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-28 01:22:56,512 INFO L175 Difference]: Start difference. First operand has 135 places, 224 transitions, 2554 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:22:56,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 265 transitions, 3211 flow [2024-06-28 01:22:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 265 transitions, 3101 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:56,663 INFO L231 Difference]: Finished difference. Result has 137 places, 224 transitions, 2516 flow [2024-06-28 01:22:56,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2516, PETRI_PLACES=137, PETRI_TRANSITIONS=224} [2024-06-28 01:22:56,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 82 predicate places. [2024-06-28 01:22:56,665 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 224 transitions, 2516 flow [2024-06-28 01:22:56,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:56,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:56,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:56,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:22:56,665 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:56,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1068496945, now seen corresponding path program 3 times [2024-06-28 01:22:56,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:56,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372233028] [2024-06-28 01:22:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:56,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:57,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:57,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372233028] [2024-06-28 01:22:57,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372233028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:57,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:57,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:57,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351723734] [2024-06-28 01:22:57,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:57,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:57,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:57,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:57,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:57,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:57,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 224 transitions, 2516 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:57,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:57,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:57,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:58,626 INFO L124 PetriNetUnfolderBase]: 5709/9068 cut-off events. [2024-06-28 01:22:58,626 INFO L125 PetriNetUnfolderBase]: For 127591/127597 co-relation queries the response was YES. [2024-06-28 01:22:58,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46380 conditions, 9068 events. 5709/9068 cut-off events. For 127591/127597 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 58001 event pairs, 1909 based on Foata normal form. 7/8897 useless extension candidates. Maximal degree in co-relation 46322. Up to 7983 conditions per place. [2024-06-28 01:22:58,713 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 217 selfloop transitions, 30 changer transitions 0/258 dead transitions. [2024-06-28 01:22:58,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 258 transitions, 3142 flow [2024-06-28 01:22:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:22:58,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-28 01:22:58,715 INFO L175 Difference]: Start difference. First operand has 137 places, 224 transitions, 2516 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:22:58,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 258 transitions, 3142 flow [2024-06-28 01:22:58,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 258 transitions, 2992 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:58,867 INFO L231 Difference]: Finished difference. Result has 137 places, 224 transitions, 2440 flow [2024-06-28 01:22:58,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2440, PETRI_PLACES=137, PETRI_TRANSITIONS=224} [2024-06-28 01:22:58,867 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 82 predicate places. [2024-06-28 01:22:58,868 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 224 transitions, 2440 flow [2024-06-28 01:22:58,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:58,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:58,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:58,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:22:58,868 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:58,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1646586010, now seen corresponding path program 1 times [2024-06-28 01:22:58,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:58,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972761441] [2024-06-28 01:22:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:58,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:59,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972761441] [2024-06-28 01:22:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972761441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:59,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:59,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19267195] [2024-06-28 01:22:59,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:59,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:59,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:59,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:22:59,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 224 transitions, 2440 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:59,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:59,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:22:59,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:01,181 INFO L124 PetriNetUnfolderBase]: 6766/10449 cut-off events. [2024-06-28 01:23:01,182 INFO L125 PetriNetUnfolderBase]: For 149306/149330 co-relation queries the response was YES. [2024-06-28 01:23:01,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52056 conditions, 10449 events. 6766/10449 cut-off events. For 149306/149330 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 64599 event pairs, 2476 based on Foata normal form. 3/10273 useless extension candidates. Maximal degree in co-relation 51997. Up to 9498 conditions per place. [2024-06-28 01:23:01,252 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 200 selfloop transitions, 15 changer transitions 0/248 dead transitions. [2024-06-28 01:23:01,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 248 transitions, 2976 flow [2024-06-28 01:23:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:23:01,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-28 01:23:01,254 INFO L175 Difference]: Start difference. First operand has 137 places, 224 transitions, 2440 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:23:01,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 248 transitions, 2976 flow [2024-06-28 01:23:01,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 248 transitions, 2820 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:01,398 INFO L231 Difference]: Finished difference. Result has 136 places, 227 transitions, 2358 flow [2024-06-28 01:23:01,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2358, PETRI_PLACES=136, PETRI_TRANSITIONS=227} [2024-06-28 01:23:01,399 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-28 01:23:01,399 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 227 transitions, 2358 flow [2024-06-28 01:23:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:01,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:01,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:23:01,400 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:01,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1749144811, now seen corresponding path program 1 times [2024-06-28 01:23:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710515790] [2024-06-28 01:23:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:02,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:02,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710515790] [2024-06-28 01:23:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710515790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:02,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071681216] [2024-06-28 01:23:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:02,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:02,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:02,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:02,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 227 transitions, 2358 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:02,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:02,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:02,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:03,766 INFO L124 PetriNetUnfolderBase]: 5521/8793 cut-off events. [2024-06-28 01:23:03,766 INFO L125 PetriNetUnfolderBase]: For 136965/137005 co-relation queries the response was YES. [2024-06-28 01:23:03,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46177 conditions, 8793 events. 5521/8793 cut-off events. For 136965/137005 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56510 event pairs, 1331 based on Foata normal form. 12/8637 useless extension candidates. Maximal degree in co-relation 46117. Up to 7035 conditions per place. [2024-06-28 01:23:03,844 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 181 selfloop transitions, 71 changer transitions 0/288 dead transitions. [2024-06-28 01:23:03,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 288 transitions, 3265 flow [2024-06-28 01:23:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:23:03,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:23:03,846 INFO L175 Difference]: Start difference. First operand has 136 places, 227 transitions, 2358 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:23:03,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 288 transitions, 3265 flow [2024-06-28 01:23:03,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 288 transitions, 3215 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:03,973 INFO L231 Difference]: Finished difference. Result has 142 places, 234 transitions, 2583 flow [2024-06-28 01:23:03,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2583, PETRI_PLACES=142, PETRI_TRANSITIONS=234} [2024-06-28 01:23:03,974 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2024-06-28 01:23:03,974 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 234 transitions, 2583 flow [2024-06-28 01:23:03,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:03,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:03,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:23:03,975 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:03,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:03,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1749084237, now seen corresponding path program 1 times [2024-06-28 01:23:03,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:03,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784684155] [2024-06-28 01:23:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:03,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784684155] [2024-06-28 01:23:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784684155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:04,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:04,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:04,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39459845] [2024-06-28 01:23:04,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:04,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:04,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:04,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:04,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:04,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:04,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 234 transitions, 2583 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:04,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:04,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:04,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:06,282 INFO L124 PetriNetUnfolderBase]: 5803/9166 cut-off events. [2024-06-28 01:23:06,282 INFO L125 PetriNetUnfolderBase]: For 149873/149880 co-relation queries the response was YES. [2024-06-28 01:23:06,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49333 conditions, 9166 events. 5803/9166 cut-off events. For 149873/149880 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 58267 event pairs, 1797 based on Foata normal form. 6/8999 useless extension candidates. Maximal degree in co-relation 49271. Up to 7229 conditions per place. [2024-06-28 01:23:06,372 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 153 selfloop transitions, 135 changer transitions 0/299 dead transitions. [2024-06-28 01:23:06,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 299 transitions, 3655 flow [2024-06-28 01:23:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:23:06,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192743764172335 [2024-06-28 01:23:06,374 INFO L175 Difference]: Start difference. First operand has 142 places, 234 transitions, 2583 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:23:06,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 299 transitions, 3655 flow [2024-06-28 01:23:06,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 299 transitions, 3524 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:06,584 INFO L231 Difference]: Finished difference. Result has 150 places, 249 transitions, 3039 flow [2024-06-28 01:23:06,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3039, PETRI_PLACES=150, PETRI_TRANSITIONS=249} [2024-06-28 01:23:06,585 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 95 predicate places. [2024-06-28 01:23:06,585 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 249 transitions, 3039 flow [2024-06-28 01:23:06,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:06,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:06,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:23:06,586 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:06,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1259089953, now seen corresponding path program 2 times [2024-06-28 01:23:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:06,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666186766] [2024-06-28 01:23:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:07,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666186766] [2024-06-28 01:23:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666186766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:07,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070268302] [2024-06-28 01:23:07,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:07,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:07,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:07,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:07,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:07,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 249 transitions, 3039 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:07,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:07,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:07,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:09,125 INFO L124 PetriNetUnfolderBase]: 5546/8872 cut-off events. [2024-06-28 01:23:09,125 INFO L125 PetriNetUnfolderBase]: For 160022/160077 co-relation queries the response was YES. [2024-06-28 01:23:09,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49993 conditions, 8872 events. 5546/8872 cut-off events. For 160022/160077 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 57367 event pairs, 1617 based on Foata normal form. 10/8705 useless extension candidates. Maximal degree in co-relation 49927. Up to 7246 conditions per place. [2024-06-28 01:23:09,219 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 210 selfloop transitions, 62 changer transitions 0/311 dead transitions. [2024-06-28 01:23:09,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 311 transitions, 3845 flow [2024-06-28 01:23:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:23:09,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-06-28 01:23:09,221 INFO L175 Difference]: Start difference. First operand has 150 places, 249 transitions, 3039 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:23:09,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 311 transitions, 3845 flow [2024-06-28 01:23:09,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 311 transitions, 3741 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-28 01:23:09,571 INFO L231 Difference]: Finished difference. Result has 157 places, 251 transitions, 3095 flow [2024-06-28 01:23:09,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3095, PETRI_PLACES=157, PETRI_TRANSITIONS=251} [2024-06-28 01:23:09,572 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2024-06-28 01:23:09,572 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 251 transitions, 3095 flow [2024-06-28 01:23:09,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:09,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:09,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:09,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:23:09,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:09,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:09,573 INFO L85 PathProgramCache]: Analyzing trace with hash -880420899, now seen corresponding path program 2 times [2024-06-28 01:23:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:09,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126279294] [2024-06-28 01:23:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:09,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:10,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:10,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126279294] [2024-06-28 01:23:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126279294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:10,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869166734] [2024-06-28 01:23:10,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:10,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:10,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:10,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:10,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 251 transitions, 3095 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:10,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:10,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:12,190 INFO L124 PetriNetUnfolderBase]: 5836/9154 cut-off events. [2024-06-28 01:23:12,191 INFO L125 PetriNetUnfolderBase]: For 169309/169316 co-relation queries the response was YES. [2024-06-28 01:23:12,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52276 conditions, 9154 events. 5836/9154 cut-off events. For 169309/169316 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 57628 event pairs, 1726 based on Foata normal form. 6/9001 useless extension candidates. Maximal degree in co-relation 52208. Up to 7517 conditions per place. [2024-06-28 01:23:12,277 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 161 selfloop transitions, 140 changer transitions 0/312 dead transitions. [2024-06-28 01:23:12,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 312 transitions, 4057 flow [2024-06-28 01:23:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:23:12,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-28 01:23:12,279 INFO L175 Difference]: Start difference. First operand has 157 places, 251 transitions, 3095 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:23:12,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 312 transitions, 4057 flow [2024-06-28 01:23:12,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 312 transitions, 3912 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:12,465 INFO L231 Difference]: Finished difference. Result has 161 places, 262 transitions, 3557 flow [2024-06-28 01:23:12,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2958, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3557, PETRI_PLACES=161, PETRI_TRANSITIONS=262} [2024-06-28 01:23:12,466 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2024-06-28 01:23:12,466 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 262 transitions, 3557 flow [2024-06-28 01:23:12,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:12,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:12,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:12,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:23:12,467 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:12,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1635465207, now seen corresponding path program 3 times [2024-06-28 01:23:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912339529] [2024-06-28 01:23:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912339529] [2024-06-28 01:23:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912339529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:13,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:13,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:13,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50969594] [2024-06-28 01:23:13,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:13,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:13,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:13,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:13,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 262 transitions, 3557 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:13,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:13,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:13,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:14,935 INFO L124 PetriNetUnfolderBase]: 5859/9203 cut-off events. [2024-06-28 01:23:14,935 INFO L125 PetriNetUnfolderBase]: For 183343/183350 co-relation queries the response was YES. [2024-06-28 01:23:14,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54196 conditions, 9203 events. 5859/9203 cut-off events. For 183343/183350 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 58019 event pairs, 1729 based on Foata normal form. 6/9048 useless extension candidates. Maximal degree in co-relation 54125. Up to 7487 conditions per place. [2024-06-28 01:23:15,027 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 156 selfloop transitions, 145 changer transitions 0/312 dead transitions. [2024-06-28 01:23:15,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 312 transitions, 4390 flow [2024-06-28 01:23:15,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:23:15,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:23:15,028 INFO L175 Difference]: Start difference. First operand has 161 places, 262 transitions, 3557 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:23:15,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 312 transitions, 4390 flow [2024-06-28 01:23:15,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 312 transitions, 4087 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:15,333 INFO L231 Difference]: Finished difference. Result has 165 places, 265 transitions, 3601 flow [2024-06-28 01:23:15,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3601, PETRI_PLACES=165, PETRI_TRANSITIONS=265} [2024-06-28 01:23:15,334 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 110 predicate places. [2024-06-28 01:23:15,334 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 265 transitions, 3601 flow [2024-06-28 01:23:15,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:15,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:23:15,335 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:15,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1630996557, now seen corresponding path program 4 times [2024-06-28 01:23:15,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38544557] [2024-06-28 01:23:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38544557] [2024-06-28 01:23:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38544557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:16,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750494737] [2024-06-28 01:23:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:16,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:16,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:16,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:16,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 265 transitions, 3601 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:16,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:16,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:16,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:18,038 INFO L124 PetriNetUnfolderBase]: 5882/9220 cut-off events. [2024-06-28 01:23:18,039 INFO L125 PetriNetUnfolderBase]: For 188945/188962 co-relation queries the response was YES. [2024-06-28 01:23:18,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54587 conditions, 9220 events. 5882/9220 cut-off events. For 188945/188962 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 58081 event pairs, 1716 based on Foata normal form. 16/9076 useless extension candidates. Maximal degree in co-relation 54515. Up to 7447 conditions per place. [2024-06-28 01:23:18,115 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 163 selfloop transitions, 151 changer transitions 0/325 dead transitions. [2024-06-28 01:23:18,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 325 transitions, 4638 flow [2024-06-28 01:23:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:23:18,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:23:18,116 INFO L175 Difference]: Start difference. First operand has 165 places, 265 transitions, 3601 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:23:18,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 325 transitions, 4638 flow [2024-06-28 01:23:18,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 325 transitions, 4322 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:18,304 INFO L231 Difference]: Finished difference. Result has 168 places, 271 transitions, 3775 flow [2024-06-28 01:23:18,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3775, PETRI_PLACES=168, PETRI_TRANSITIONS=271} [2024-06-28 01:23:18,305 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 113 predicate places. [2024-06-28 01:23:18,305 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 271 transitions, 3775 flow [2024-06-28 01:23:18,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:18,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:18,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:18,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:23:18,306 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:18,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1630991721, now seen corresponding path program 1 times [2024-06-28 01:23:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:18,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381846359] [2024-06-28 01:23:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:18,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:19,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381846359] [2024-06-28 01:23:19,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381846359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:19,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:19,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801805186] [2024-06-28 01:23:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:19,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:19,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:19,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:19,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 271 transitions, 3775 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:19,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:19,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:19,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:20,859 INFO L124 PetriNetUnfolderBase]: 5916/9278 cut-off events. [2024-06-28 01:23:20,860 INFO L125 PetriNetUnfolderBase]: For 201826/201843 co-relation queries the response was YES. [2024-06-28 01:23:20,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56038 conditions, 9278 events. 5916/9278 cut-off events. For 201826/201843 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58584 event pairs, 1614 based on Foata normal form. 18/9127 useless extension candidates. Maximal degree in co-relation 55965. Up to 7284 conditions per place. [2024-06-28 01:23:20,959 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 202 selfloop transitions, 117 changer transitions 0/330 dead transitions. [2024-06-28 01:23:20,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 330 transitions, 4783 flow [2024-06-28 01:23:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 01:23:20,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-28 01:23:20,961 INFO L175 Difference]: Start difference. First operand has 168 places, 271 transitions, 3775 flow. Second operand 8 states and 216 transitions. [2024-06-28 01:23:20,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 330 transitions, 4783 flow [2024-06-28 01:23:21,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 330 transitions, 4561 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:21,215 INFO L231 Difference]: Finished difference. Result has 171 places, 274 transitions, 3840 flow [2024-06-28 01:23:21,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3840, PETRI_PLACES=171, PETRI_TRANSITIONS=274} [2024-06-28 01:23:21,216 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2024-06-28 01:23:21,216 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 274 transitions, 3840 flow [2024-06-28 01:23:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:21,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:21,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:23:21,217 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:21,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1377182407, now seen corresponding path program 5 times [2024-06-28 01:23:21,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:21,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574156264] [2024-06-28 01:23:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:21,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:22,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:22,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574156264] [2024-06-28 01:23:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574156264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:22,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034423511] [2024-06-28 01:23:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:22,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:22,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:22,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 274 transitions, 3840 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:22,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:22,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:22,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:23,901 INFO L124 PetriNetUnfolderBase]: 5951/9347 cut-off events. [2024-06-28 01:23:23,901 INFO L125 PetriNetUnfolderBase]: For 207662/207679 co-relation queries the response was YES. [2024-06-28 01:23:23,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56115 conditions, 9347 events. 5951/9347 cut-off events. For 207662/207679 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 59218 event pairs, 1749 based on Foata normal form. 16/9194 useless extension candidates. Maximal degree in co-relation 56041. Up to 7734 conditions per place. [2024-06-28 01:23:24,005 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 201 selfloop transitions, 116 changer transitions 0/328 dead transitions. [2024-06-28 01:23:24,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 328 transitions, 4718 flow [2024-06-28 01:23:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:23:24,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:23:24,006 INFO L175 Difference]: Start difference. First operand has 171 places, 274 transitions, 3840 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:23:24,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 328 transitions, 4718 flow [2024-06-28 01:23:24,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 328 transitions, 4427 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:24,249 INFO L231 Difference]: Finished difference. Result has 173 places, 277 transitions, 3846 flow [2024-06-28 01:23:24,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3846, PETRI_PLACES=173, PETRI_TRANSITIONS=277} [2024-06-28 01:23:24,249 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 118 predicate places. [2024-06-28 01:23:24,249 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 277 transitions, 3846 flow [2024-06-28 01:23:24,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:24,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:24,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:24,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:23:24,250 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:24,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1630812231, now seen corresponding path program 2 times [2024-06-28 01:23:24,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:24,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727419819] [2024-06-28 01:23:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:24,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:24,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:24,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727419819] [2024-06-28 01:23:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727419819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869590455] [2024-06-28 01:23:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:24,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:24,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:25,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:25,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 277 transitions, 3846 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:25,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:25,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:26,548 INFO L124 PetriNetUnfolderBase]: 6053/9482 cut-off events. [2024-06-28 01:23:26,549 INFO L125 PetriNetUnfolderBase]: For 221436/221443 co-relation queries the response was YES. [2024-06-28 01:23:26,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57156 conditions, 9482 events. 6053/9482 cut-off events. For 221436/221443 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 59925 event pairs, 1673 based on Foata normal form. 8/9325 useless extension candidates. Maximal degree in co-relation 57081. Up to 7418 conditions per place. [2024-06-28 01:23:26,642 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 200 selfloop transitions, 124 changer transitions 0/335 dead transitions. [2024-06-28 01:23:26,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 335 transitions, 5005 flow [2024-06-28 01:23:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:26,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 01:23:26,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-06-28 01:23:26,643 INFO L175 Difference]: Start difference. First operand has 173 places, 277 transitions, 3846 flow. Second operand 8 states and 214 transitions. [2024-06-28 01:23:26,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 335 transitions, 5005 flow [2024-06-28 01:23:26,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 335 transitions, 4744 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:26,886 INFO L231 Difference]: Finished difference. Result has 175 places, 283 transitions, 3918 flow [2024-06-28 01:23:26,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3918, PETRI_PLACES=175, PETRI_TRANSITIONS=283} [2024-06-28 01:23:26,887 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 120 predicate places. [2024-06-28 01:23:26,887 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 283 transitions, 3918 flow [2024-06-28 01:23:26,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:26,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:26,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:26,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:23:26,888 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:26,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1630818927, now seen corresponding path program 6 times [2024-06-28 01:23:26,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:26,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491985994] [2024-06-28 01:23:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:26,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491985994] [2024-06-28 01:23:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491985994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869446848] [2024-06-28 01:23:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:28,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:28,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:28,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:28,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 283 transitions, 3918 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:28,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:28,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:28,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:29,613 INFO L124 PetriNetUnfolderBase]: 6091/9548 cut-off events. [2024-06-28 01:23:29,614 INFO L125 PetriNetUnfolderBase]: For 230884/230891 co-relation queries the response was YES. [2024-06-28 01:23:29,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58031 conditions, 9548 events. 6091/9548 cut-off events. For 230884/230891 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 60456 event pairs, 1748 based on Foata normal form. 6/9387 useless extension candidates. Maximal degree in co-relation 57955. Up to 7874 conditions per place. [2024-06-28 01:23:29,719 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 189 selfloop transitions, 144 changer transitions 0/344 dead transitions. [2024-06-28 01:23:29,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 344 transitions, 4963 flow [2024-06-28 01:23:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:23:29,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-06-28 01:23:29,721 INFO L175 Difference]: Start difference. First operand has 175 places, 283 transitions, 3918 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:23:29,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 344 transitions, 4963 flow [2024-06-28 01:23:30,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 344 transitions, 4763 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:30,007 INFO L231 Difference]: Finished difference. Result has 181 places, 295 transitions, 4274 flow [2024-06-28 01:23:30,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4274, PETRI_PLACES=181, PETRI_TRANSITIONS=295} [2024-06-28 01:23:30,008 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2024-06-28 01:23:30,008 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 295 transitions, 4274 flow [2024-06-28 01:23:30,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:30,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:30,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:30,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:23:30,008 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:30,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash 927004355, now seen corresponding path program 3 times [2024-06-28 01:23:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:30,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388145061] [2024-06-28 01:23:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:30,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:30,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388145061] [2024-06-28 01:23:30,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388145061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:30,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:30,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:30,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028526267] [2024-06-28 01:23:30,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:30,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:30,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:30,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:30,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:30,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:30,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 295 transitions, 4274 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:30,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:30,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:30,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:32,596 INFO L124 PetriNetUnfolderBase]: 6081/9532 cut-off events. [2024-06-28 01:23:32,597 INFO L125 PetriNetUnfolderBase]: For 242010/242017 co-relation queries the response was YES. [2024-06-28 01:23:32,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58275 conditions, 9532 events. 6081/9532 cut-off events. For 242010/242017 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 60331 event pairs, 1663 based on Foata normal form. 8/9374 useless extension candidates. Maximal degree in co-relation 58197. Up to 7463 conditions per place. [2024-06-28 01:23:32,710 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 222 selfloop transitions, 116 changer transitions 0/349 dead transitions. [2024-06-28 01:23:32,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 349 transitions, 5286 flow [2024-06-28 01:23:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 01:23:32,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-06-28 01:23:32,712 INFO L175 Difference]: Start difference. First operand has 181 places, 295 transitions, 4274 flow. Second operand 8 states and 214 transitions. [2024-06-28 01:23:32,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 349 transitions, 5286 flow [2024-06-28 01:23:33,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 349 transitions, 5066 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:33,029 INFO L231 Difference]: Finished difference. Result has 185 places, 295 transitions, 4297 flow [2024-06-28 01:23:33,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4297, PETRI_PLACES=185, PETRI_TRANSITIONS=295} [2024-06-28 01:23:33,030 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2024-06-28 01:23:33,030 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 295 transitions, 4297 flow [2024-06-28 01:23:33,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:33,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:33,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:23:33,031 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:33,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:33,031 INFO L85 PathProgramCache]: Analyzing trace with hash 481170463, now seen corresponding path program 1 times [2024-06-28 01:23:33,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:33,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401325062] [2024-06-28 01:23:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:33,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:33,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:33,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401325062] [2024-06-28 01:23:33,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401325062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:33,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:33,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398922680] [2024-06-28 01:23:33,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:33,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:33,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:33,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:33,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:33,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:23:33,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 295 transitions, 4297 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:33,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:33,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:23:33,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:35,487 INFO L124 PetriNetUnfolderBase]: 7236/11312 cut-off events. [2024-06-28 01:23:35,487 INFO L125 PetriNetUnfolderBase]: For 283504/283538 co-relation queries the response was YES. [2024-06-28 01:23:35,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65677 conditions, 11312 events. 7236/11312 cut-off events. For 283504/283538 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 72226 event pairs, 2339 based on Foata normal form. 11/11087 useless extension candidates. Maximal degree in co-relation 65598. Up to 10051 conditions per place. [2024-06-28 01:23:35,586 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 263 selfloop transitions, 24 changer transitions 0/333 dead transitions. [2024-06-28 01:23:35,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 333 transitions, 5152 flow [2024-06-28 01:23:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:23:35,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:23:35,588 INFO L175 Difference]: Start difference. First operand has 185 places, 295 transitions, 4297 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:23:35,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 333 transitions, 5152 flow [2024-06-28 01:23:35,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 333 transitions, 4898 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:35,946 INFO L231 Difference]: Finished difference. Result has 185 places, 305 transitions, 4229 flow [2024-06-28 01:23:35,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4229, PETRI_PLACES=185, PETRI_TRANSITIONS=305} [2024-06-28 01:23:35,947 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2024-06-28 01:23:35,947 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 305 transitions, 4229 flow [2024-06-28 01:23:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:35,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:35,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:35,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:23:35,948 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:35,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1236332083, now seen corresponding path program 7 times [2024-06-28 01:23:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:35,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857628115] [2024-06-28 01:23:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:36,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857628115] [2024-06-28 01:23:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857628115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:36,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:36,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931916014] [2024-06-28 01:23:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:36,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:36,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:36,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:36,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 305 transitions, 4229 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:36,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:36,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:36,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:38,659 INFO L124 PetriNetUnfolderBase]: 6141/9670 cut-off events. [2024-06-28 01:23:38,659 INFO L125 PetriNetUnfolderBase]: For 269259/269282 co-relation queries the response was YES. [2024-06-28 01:23:38,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59783 conditions, 9670 events. 6141/9670 cut-off events. For 269259/269282 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 61640 event pairs, 1806 based on Foata normal form. 4/9490 useless extension candidates. Maximal degree in co-relation 59702. Up to 8522 conditions per place. [2024-06-28 01:23:38,750 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 294 selfloop transitions, 44 changer transitions 0/352 dead transitions. [2024-06-28 01:23:38,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 352 transitions, 5133 flow [2024-06-28 01:23:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:23:38,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-28 01:23:38,751 INFO L175 Difference]: Start difference. First operand has 185 places, 305 transitions, 4229 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:23:38,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 352 transitions, 5133 flow [2024-06-28 01:23:39,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 352 transitions, 5039 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-06-28 01:23:39,052 INFO L231 Difference]: Finished difference. Result has 192 places, 308 transitions, 4300 flow [2024-06-28 01:23:39,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4163, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4300, PETRI_PLACES=192, PETRI_TRANSITIONS=308} [2024-06-28 01:23:39,052 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 137 predicate places. [2024-06-28 01:23:39,052 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 308 transitions, 4300 flow [2024-06-28 01:23:39,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:39,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:39,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:39,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:23:39,053 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:39,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 374609061, now seen corresponding path program 4 times [2024-06-28 01:23:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:39,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142575026] [2024-06-28 01:23:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:39,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142575026] [2024-06-28 01:23:39,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142575026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:39,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:39,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767015004] [2024-06-28 01:23:39,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:40,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:40,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 308 transitions, 4300 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:40,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:40,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:41,604 INFO L124 PetriNetUnfolderBase]: 6187/9734 cut-off events. [2024-06-28 01:23:41,604 INFO L125 PetriNetUnfolderBase]: For 281462/281481 co-relation queries the response was YES. [2024-06-28 01:23:41,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60430 conditions, 9734 events. 6187/9734 cut-off events. For 281462/281481 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 62025 event pairs, 1824 based on Foata normal form. 6/9556 useless extension candidates. Maximal degree in co-relation 60346. Up to 8434 conditions per place. [2024-06-28 01:23:41,718 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 303 selfloop transitions, 43 changer transitions 0/360 dead transitions. [2024-06-28 01:23:41,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 360 transitions, 5363 flow [2024-06-28 01:23:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:23:41,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-28 01:23:41,720 INFO L175 Difference]: Start difference. First operand has 192 places, 308 transitions, 4300 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:23:41,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 360 transitions, 5363 flow [2024-06-28 01:23:42,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 360 transitions, 5101 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:42,095 INFO L231 Difference]: Finished difference. Result has 194 places, 311 transitions, 4175 flow [2024-06-28 01:23:42,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4038, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4175, PETRI_PLACES=194, PETRI_TRANSITIONS=311} [2024-06-28 01:23:42,096 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-06-28 01:23:42,097 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 311 transitions, 4175 flow [2024-06-28 01:23:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:42,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:42,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:42,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:23:42,097 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:42,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:42,098 INFO L85 PathProgramCache]: Analyzing trace with hash 374615571, now seen corresponding path program 5 times [2024-06-28 01:23:42,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:42,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175412550] [2024-06-28 01:23:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:42,851 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 01:23:42,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175412550] [2024-06-28 01:23:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175412550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:42,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:42,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062492703] [2024-06-28 01:23:42,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:42,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:42,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:42,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:42,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 311 transitions, 4175 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:42,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:42,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:42,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:44,457 INFO L124 PetriNetUnfolderBase]: 6233/9822 cut-off events. [2024-06-28 01:23:44,457 INFO L125 PetriNetUnfolderBase]: For 291202/291221 co-relation queries the response was YES. [2024-06-28 01:23:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60616 conditions, 9822 events. 6233/9822 cut-off events. For 291202/291221 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 62773 event pairs, 1848 based on Foata normal form. 6/9638 useless extension candidates. Maximal degree in co-relation 60533. Up to 8473 conditions per place. [2024-06-28 01:23:44,587 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 299 selfloop transitions, 47 changer transitions 0/360 dead transitions. [2024-06-28 01:23:44,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 360 transitions, 5231 flow [2024-06-28 01:23:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 01:23:44,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943310657596372 [2024-06-28 01:23:44,589 INFO L175 Difference]: Start difference. First operand has 194 places, 311 transitions, 4175 flow. Second operand 9 states and 218 transitions. [2024-06-28 01:23:44,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 360 transitions, 5231 flow [2024-06-28 01:23:45,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 360 transitions, 5012 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:45,029 INFO L231 Difference]: Finished difference. Result has 195 places, 314 transitions, 4105 flow [2024-06-28 01:23:45,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3969, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4105, PETRI_PLACES=195, PETRI_TRANSITIONS=314} [2024-06-28 01:23:45,030 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 140 predicate places. [2024-06-28 01:23:45,030 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 314 transitions, 4105 flow [2024-06-28 01:23:45,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:45,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:45,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:23:45,031 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:45,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash 383783511, now seen corresponding path program 6 times [2024-06-28 01:23:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:45,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149970092] [2024-06-28 01:23:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:45,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:45,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:45,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149970092] [2024-06-28 01:23:45,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149970092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:45,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:45,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:45,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544439645] [2024-06-28 01:23:45,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:45,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:45,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:45,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:45,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:45,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:45,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 314 transitions, 4105 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:45,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:45,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:45,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:47,279 INFO L124 PetriNetUnfolderBase]: 6223/9801 cut-off events. [2024-06-28 01:23:47,279 INFO L125 PetriNetUnfolderBase]: For 294527/294546 co-relation queries the response was YES. [2024-06-28 01:23:47,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60292 conditions, 9801 events. 6223/9801 cut-off events. For 294527/294546 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 62628 event pairs, 1846 based on Foata normal form. 6/9619 useless extension candidates. Maximal degree in co-relation 60208. Up to 8641 conditions per place. [2024-06-28 01:23:47,383 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 314 selfloop transitions, 24 changer transitions 0/352 dead transitions. [2024-06-28 01:23:47,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 352 transitions, 4913 flow [2024-06-28 01:23:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:23:47,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:23:47,385 INFO L175 Difference]: Start difference. First operand has 195 places, 314 transitions, 4105 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:23:47,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 352 transitions, 4913 flow [2024-06-28 01:23:47,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 352 transitions, 4809 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:47,803 INFO L231 Difference]: Finished difference. Result has 197 places, 314 transitions, 4057 flow [2024-06-28 01:23:47,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4001, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4057, PETRI_PLACES=197, PETRI_TRANSITIONS=314} [2024-06-28 01:23:47,804 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2024-06-28 01:23:47,804 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 314 transitions, 4057 flow [2024-06-28 01:23:47,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:47,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:47,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:47,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:23:47,805 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:47,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash 495425503, now seen corresponding path program 2 times [2024-06-28 01:23:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:47,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788288870] [2024-06-28 01:23:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:47,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:48,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:48,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788288870] [2024-06-28 01:23:48,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788288870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:48,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:48,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:48,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85944553] [2024-06-28 01:23:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:48,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:48,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:23:48,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 314 transitions, 4057 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:48,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:48,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:23:48,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:50,096 INFO L124 PetriNetUnfolderBase]: 7348/11457 cut-off events. [2024-06-28 01:23:50,096 INFO L125 PetriNetUnfolderBase]: For 337740/337764 co-relation queries the response was YES. [2024-06-28 01:23:50,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66859 conditions, 11457 events. 7348/11457 cut-off events. For 337740/337764 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 72796 event pairs, 2477 based on Foata normal form. 1/11233 useless extension candidates. Maximal degree in co-relation 66774. Up to 10278 conditions per place. [2024-06-28 01:23:50,234 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 269 selfloop transitions, 14 changer transitions 0/330 dead transitions. [2024-06-28 01:23:50,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 330 transitions, 4677 flow [2024-06-28 01:23:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 01:23:50,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-28 01:23:50,236 INFO L175 Difference]: Start difference. First operand has 197 places, 314 transitions, 4057 flow. Second operand 6 states and 134 transitions. [2024-06-28 01:23:50,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 330 transitions, 4677 flow [2024-06-28 01:23:50,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 330 transitions, 4561 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:50,664 INFO L231 Difference]: Finished difference. Result has 195 places, 314 transitions, 3975 flow [2024-06-28 01:23:50,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3941, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3975, PETRI_PLACES=195, PETRI_TRANSITIONS=314} [2024-06-28 01:23:50,665 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 140 predicate places. [2024-06-28 01:23:50,665 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 314 transitions, 3975 flow [2024-06-28 01:23:50,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:50,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:50,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:50,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:23:50,666 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:50,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash 487813856, now seen corresponding path program 1 times [2024-06-28 01:23:50,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:50,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013304456] [2024-06-28 01:23:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:50,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:51,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:51,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013304456] [2024-06-28 01:23:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013304456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363519202] [2024-06-28 01:23:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:51,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:23:51,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 314 transitions, 3975 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:51,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:51,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:23:51,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:53,176 INFO L124 PetriNetUnfolderBase]: 7365/11488 cut-off events. [2024-06-28 01:23:53,176 INFO L125 PetriNetUnfolderBase]: For 349031/349055 co-relation queries the response was YES. [2024-06-28 01:23:53,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66959 conditions, 11488 events. 7365/11488 cut-off events. For 349031/349055 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 72987 event pairs, 2464 based on Foata normal form. 1/11262 useless extension candidates. Maximal degree in co-relation 66873. Up to 10264 conditions per place. [2024-06-28 01:23:53,300 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 270 selfloop transitions, 26 changer transitions 0/343 dead transitions. [2024-06-28 01:23:53,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 343 transitions, 4795 flow [2024-06-28 01:23:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:23:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:23:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:23:53,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518950437317784 [2024-06-28 01:23:53,302 INFO L175 Difference]: Start difference. First operand has 195 places, 314 transitions, 3975 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:23:53,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 343 transitions, 4795 flow [2024-06-28 01:23:53,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 343 transitions, 4737 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:53,715 INFO L231 Difference]: Finished difference. Result has 197 places, 320 transitions, 4046 flow [2024-06-28 01:23:53,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4046, PETRI_PLACES=197, PETRI_TRANSITIONS=320} [2024-06-28 01:23:53,716 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2024-06-28 01:23:53,716 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 320 transitions, 4046 flow [2024-06-28 01:23:53,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:53,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:53,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:53,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:23:53,716 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:53,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1497303746, now seen corresponding path program 2 times [2024-06-28 01:23:53,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:53,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695150530] [2024-06-28 01:23:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:53,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:54,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695150530] [2024-06-28 01:23:54,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695150530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:54,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:54,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:54,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624696008] [2024-06-28 01:23:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:54,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:54,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:54,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:54,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:54,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:23:54,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 320 transitions, 4046 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:54,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:54,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:23:54,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:56,324 INFO L124 PetriNetUnfolderBase]: 7362/11485 cut-off events. [2024-06-28 01:23:56,324 INFO L125 PetriNetUnfolderBase]: For 364277/364304 co-relation queries the response was YES. [2024-06-28 01:23:56,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68118 conditions, 11485 events. 7362/11485 cut-off events. For 364277/364304 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 73015 event pairs, 2461 based on Foata normal form. 3/11260 useless extension candidates. Maximal degree in co-relation 68032. Up to 10261 conditions per place. [2024-06-28 01:23:56,460 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 266 selfloop transitions, 26 changer transitions 0/339 dead transitions. [2024-06-28 01:23:56,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 339 transitions, 4700 flow [2024-06-28 01:23:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:23:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:23:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 01:23:56,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4402332361516035 [2024-06-28 01:23:56,462 INFO L175 Difference]: Start difference. First operand has 197 places, 320 transitions, 4046 flow. Second operand 7 states and 151 transitions. [2024-06-28 01:23:56,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 339 transitions, 4700 flow [2024-06-28 01:23:56,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 339 transitions, 4638 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:56,882 INFO L231 Difference]: Finished difference. Result has 201 places, 320 transitions, 4043 flow [2024-06-28 01:23:56,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3984, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4043, PETRI_PLACES=201, PETRI_TRANSITIONS=320} [2024-06-28 01:23:56,883 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-28 01:23:56,883 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 320 transitions, 4043 flow [2024-06-28 01:23:56,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:56,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:56,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:56,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:23:56,888 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:56,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 384121132, now seen corresponding path program 1 times [2024-06-28 01:23:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:56,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601084442] [2024-06-28 01:23:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:58,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:58,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601084442] [2024-06-28 01:23:58,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601084442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:58,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619075358] [2024-06-28 01:23:58,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:58,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:58,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:58,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:58,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:23:58,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 320 transitions, 4043 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:58,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:58,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:23:58,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:00,388 INFO L124 PetriNetUnfolderBase]: 7195/11215 cut-off events. [2024-06-28 01:24:00,389 INFO L125 PetriNetUnfolderBase]: For 378152/378192 co-relation queries the response was YES. [2024-06-28 01:24:00,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68036 conditions, 11215 events. 7195/11215 cut-off events. For 378152/378192 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 70938 event pairs, 2158 based on Foata normal form. 4/10984 useless extension candidates. Maximal degree in co-relation 67948. Up to 9971 conditions per place. [2024-06-28 01:24:00,531 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 328 selfloop transitions, 33 changer transitions 0/376 dead transitions. [2024-06-28 01:24:00,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 376 transitions, 5003 flow [2024-06-28 01:24:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:24:00,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-28 01:24:00,539 INFO L175 Difference]: Start difference. First operand has 201 places, 320 transitions, 4043 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:24:00,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 376 transitions, 5003 flow [2024-06-28 01:24:00,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 376 transitions, 4925 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:00,978 INFO L231 Difference]: Finished difference. Result has 204 places, 327 transitions, 4125 flow [2024-06-28 01:24:00,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3965, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4125, PETRI_PLACES=204, PETRI_TRANSITIONS=327} [2024-06-28 01:24:00,981 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 149 predicate places. [2024-06-28 01:24:00,981 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 327 transitions, 4125 flow [2024-06-28 01:24:00,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:00,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:00,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:00,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:24:00,981 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1611086852, now seen corresponding path program 1 times [2024-06-28 01:24:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517355867] [2024-06-28 01:24:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:02,133 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 01:24:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:02,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517355867] [2024-06-28 01:24:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517355867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:02,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:02,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:02,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656459982] [2024-06-28 01:24:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:02,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:02,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 327 transitions, 4125 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:02,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:02,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:02,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:04,035 INFO L124 PetriNetUnfolderBase]: 6987/11238 cut-off events. [2024-06-28 01:24:04,036 INFO L125 PetriNetUnfolderBase]: For 390623/390666 co-relation queries the response was YES. [2024-06-28 01:24:04,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68415 conditions, 11238 events. 6987/11238 cut-off events. For 390623/390666 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 75031 event pairs, 1636 based on Foata normal form. 4/10939 useless extension candidates. Maximal degree in co-relation 68326. Up to 8523 conditions per place. [2024-06-28 01:24:04,168 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 260 selfloop transitions, 135 changer transitions 0/412 dead transitions. [2024-06-28 01:24:04,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 412 transitions, 5495 flow [2024-06-28 01:24:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:24:04,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-28 01:24:04,173 INFO L175 Difference]: Start difference. First operand has 204 places, 327 transitions, 4125 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:24:04,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 412 transitions, 5495 flow [2024-06-28 01:24:04,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 412 transitions, 5396 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:04,714 INFO L231 Difference]: Finished difference. Result has 210 places, 353 transitions, 4620 flow [2024-06-28 01:24:04,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4620, PETRI_PLACES=210, PETRI_TRANSITIONS=353} [2024-06-28 01:24:04,715 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 155 predicate places. [2024-06-28 01:24:04,715 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 353 transitions, 4620 flow [2024-06-28 01:24:04,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:04,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:04,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:04,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:24:04,715 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:04,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1612960802, now seen corresponding path program 2 times [2024-06-28 01:24:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:04,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28080279] [2024-06-28 01:24:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:05,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28080279] [2024-06-28 01:24:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28080279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:05,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110451907] [2024-06-28 01:24:05,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:05,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:05,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:06,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:06,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 353 transitions, 4620 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:06,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:06,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:06,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:08,063 INFO L124 PetriNetUnfolderBase]: 7062/11273 cut-off events. [2024-06-28 01:24:08,063 INFO L125 PetriNetUnfolderBase]: For 416358/416401 co-relation queries the response was YES. [2024-06-28 01:24:08,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71131 conditions, 11273 events. 7062/11273 cut-off events. For 416358/416401 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 74550 event pairs, 1898 based on Foata normal form. 4/10996 useless extension candidates. Maximal degree in co-relation 71038. Up to 8828 conditions per place. [2024-06-28 01:24:08,207 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 263 selfloop transitions, 145 changer transitions 0/425 dead transitions. [2024-06-28 01:24:08,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 425 transitions, 5951 flow [2024-06-28 01:24:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:24:08,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-06-28 01:24:08,208 INFO L175 Difference]: Start difference. First operand has 210 places, 353 transitions, 4620 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:24:08,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 425 transitions, 5951 flow [2024-06-28 01:24:08,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 425 transitions, 5765 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 01:24:08,728 INFO L231 Difference]: Finished difference. Result has 217 places, 357 transitions, 4823 flow [2024-06-28 01:24:08,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4823, PETRI_PLACES=217, PETRI_TRANSITIONS=357} [2024-06-28 01:24:08,729 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 162 predicate places. [2024-06-28 01:24:08,730 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 357 transitions, 4823 flow [2024-06-28 01:24:08,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:08,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:08,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:24:08,731 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:08,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1612964522, now seen corresponding path program 3 times [2024-06-28 01:24:08,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:08,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693953853] [2024-06-28 01:24:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:08,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:09,847 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 01:24:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693953853] [2024-06-28 01:24:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693953853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070915860] [2024-06-28 01:24:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:09,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:09,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:10,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:10,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 357 transitions, 4823 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:10,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:10,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:10,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:12,132 INFO L124 PetriNetUnfolderBase]: 7054/11261 cut-off events. [2024-06-28 01:24:12,133 INFO L125 PetriNetUnfolderBase]: For 425447/425490 co-relation queries the response was YES. [2024-06-28 01:24:12,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71729 conditions, 11261 events. 7054/11261 cut-off events. For 425447/425490 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 74408 event pairs, 1895 based on Foata normal form. 4/10983 useless extension candidates. Maximal degree in co-relation 71634. Up to 8908 conditions per place. [2024-06-28 01:24:12,301 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 270 selfloop transitions, 146 changer transitions 0/433 dead transitions. [2024-06-28 01:24:12,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 433 transitions, 5957 flow [2024-06-28 01:24:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-06-28 01:24:12,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231910946196661 [2024-06-28 01:24:12,303 INFO L175 Difference]: Start difference. First operand has 217 places, 357 transitions, 4823 flow. Second operand 11 states and 282 transitions. [2024-06-28 01:24:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 433 transitions, 5957 flow [2024-06-28 01:24:12,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 433 transitions, 5742 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:12,875 INFO L231 Difference]: Finished difference. Result has 223 places, 357 transitions, 4909 flow [2024-06-28 01:24:12,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4608, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4909, PETRI_PLACES=223, PETRI_TRANSITIONS=357} [2024-06-28 01:24:12,877 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 168 predicate places. [2024-06-28 01:24:12,877 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 357 transitions, 4909 flow [2024-06-28 01:24:12,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:12,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:12,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:12,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:24:12,878 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:12,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:12,878 INFO L85 PathProgramCache]: Analyzing trace with hash 377087899, now seen corresponding path program 1 times [2024-06-28 01:24:12,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:12,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900997610] [2024-06-28 01:24:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:12,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:13,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:13,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900997610] [2024-06-28 01:24:13,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900997610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:13,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:13,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822405908] [2024-06-28 01:24:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:13,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:13,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:14,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:14,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 357 transitions, 4909 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:14,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:14,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:14,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:16,244 INFO L124 PetriNetUnfolderBase]: 7156/11511 cut-off events. [2024-06-28 01:24:16,244 INFO L125 PetriNetUnfolderBase]: For 443126/443169 co-relation queries the response was YES. [2024-06-28 01:24:16,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73603 conditions, 11511 events. 7156/11511 cut-off events. For 443126/443169 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 76789 event pairs, 1750 based on Foata normal form. 4/11201 useless extension candidates. Maximal degree in co-relation 73506. Up to 8282 conditions per place. [2024-06-28 01:24:16,378 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 273 selfloop transitions, 162 changer transitions 0/452 dead transitions. [2024-06-28 01:24:16,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 452 transitions, 6395 flow [2024-06-28 01:24:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-06-28 01:24:16,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-28 01:24:16,380 INFO L175 Difference]: Start difference. First operand has 223 places, 357 transitions, 4909 flow. Second operand 12 states and 316 transitions. [2024-06-28 01:24:16,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 452 transitions, 6395 flow [2024-06-28 01:24:16,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 452 transitions, 6089 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:16,820 INFO L231 Difference]: Finished difference. Result has 225 places, 363 transitions, 5032 flow [2024-06-28 01:24:16,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5032, PETRI_PLACES=225, PETRI_TRANSITIONS=363} [2024-06-28 01:24:16,821 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 170 predicate places. [2024-06-28 01:24:16,821 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 363 transitions, 5032 flow [2024-06-28 01:24:16,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:16,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:16,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:16,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:24:16,821 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:16,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2031025044, now seen corresponding path program 1 times [2024-06-28 01:24:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806767861] [2024-06-28 01:24:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:17,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806767861] [2024-06-28 01:24:17,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806767861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:17,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:17,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:24:17,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227244406] [2024-06-28 01:24:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:17,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:24:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:24:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:24:17,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:24:17,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 363 transitions, 5032 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:17,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:17,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:24:17,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:19,638 INFO L124 PetriNetUnfolderBase]: 7712/12264 cut-off events. [2024-06-28 01:24:19,638 INFO L125 PetriNetUnfolderBase]: For 465898/465919 co-relation queries the response was YES. [2024-06-28 01:24:19,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77633 conditions, 12264 events. 7712/12264 cut-off events. For 465898/465919 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 80923 event pairs, 2310 based on Foata normal form. 22/11981 useless extension candidates. Maximal degree in co-relation 77535. Up to 10192 conditions per place. [2024-06-28 01:24:19,767 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 306 selfloop transitions, 61 changer transitions 0/424 dead transitions. [2024-06-28 01:24:19,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 424 transitions, 6326 flow [2024-06-28 01:24:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:24:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:24:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:24:19,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2024-06-28 01:24:19,768 INFO L175 Difference]: Start difference. First operand has 225 places, 363 transitions, 5032 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:24:19,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 424 transitions, 6326 flow [2024-06-28 01:24:20,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 424 transitions, 6094 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:20,339 INFO L231 Difference]: Finished difference. Result has 226 places, 382 transitions, 5208 flow [2024-06-28 01:24:20,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4800, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5208, PETRI_PLACES=226, PETRI_TRANSITIONS=382} [2024-06-28 01:24:20,340 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2024-06-28 01:24:20,340 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 382 transitions, 5208 flow [2024-06-28 01:24:20,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:20,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:20,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:20,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:24:20,341 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:20,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:20,341 INFO L85 PathProgramCache]: Analyzing trace with hash -257165192, now seen corresponding path program 4 times [2024-06-28 01:24:20,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:20,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840933258] [2024-06-28 01:24:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:21,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:21,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840933258] [2024-06-28 01:24:21,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840933258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:21,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:21,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:21,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935923733] [2024-06-28 01:24:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:21,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:21,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:21,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:21,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:21,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 382 transitions, 5208 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:21,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:21,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:21,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:23,616 INFO L124 PetriNetUnfolderBase]: 7357/11684 cut-off events. [2024-06-28 01:24:23,616 INFO L125 PetriNetUnfolderBase]: For 491163/491260 co-relation queries the response was YES. [2024-06-28 01:24:23,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78951 conditions, 11684 events. 7357/11684 cut-off events. For 491163/491260 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 77174 event pairs, 1549 based on Foata normal form. 16/11406 useless extension candidates. Maximal degree in co-relation 78849. Up to 9184 conditions per place. [2024-06-28 01:24:24,016 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 244 selfloop transitions, 186 changer transitions 0/452 dead transitions. [2024-06-28 01:24:24,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 452 transitions, 6621 flow [2024-06-28 01:24:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 01:24:24,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487528344671202 [2024-06-28 01:24:24,021 INFO L175 Difference]: Start difference. First operand has 226 places, 382 transitions, 5208 flow. Second operand 9 states and 242 transitions. [2024-06-28 01:24:24,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 452 transitions, 6621 flow [2024-06-28 01:24:24,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 452 transitions, 6563 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-28 01:24:24,654 INFO L231 Difference]: Finished difference. Result has 234 places, 388 transitions, 5655 flow [2024-06-28 01:24:24,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5150, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5655, PETRI_PLACES=234, PETRI_TRANSITIONS=388} [2024-06-28 01:24:24,655 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 179 predicate places. [2024-06-28 01:24:24,655 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 388 transitions, 5655 flow [2024-06-28 01:24:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:24,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:24,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:24,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:24:24,655 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:24,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash 978715461, now seen corresponding path program 2 times [2024-06-28 01:24:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:24,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219983565] [2024-06-28 01:24:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219983565] [2024-06-28 01:24:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219983565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:25,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876536621] [2024-06-28 01:24:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:25,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:25,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:25,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 388 transitions, 5655 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:25,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:25,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:25,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:27,884 INFO L124 PetriNetUnfolderBase]: 7378/11537 cut-off events. [2024-06-28 01:24:27,884 INFO L125 PetriNetUnfolderBase]: For 513109/513182 co-relation queries the response was YES. [2024-06-28 01:24:27,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80921 conditions, 11537 events. 7378/11537 cut-off events. For 513109/513182 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 74615 event pairs, 1590 based on Foata normal form. 16/11337 useless extension candidates. Maximal degree in co-relation 80816. Up to 8525 conditions per place. [2024-06-28 01:24:28,041 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 256 selfloop transitions, 198 changer transitions 0/476 dead transitions. [2024-06-28 01:24:28,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 476 transitions, 7690 flow [2024-06-28 01:24:28,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-06-28 01:24:28,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736961451247166 [2024-06-28 01:24:28,043 INFO L175 Difference]: Start difference. First operand has 234 places, 388 transitions, 5655 flow. Second operand 9 states and 253 transitions. [2024-06-28 01:24:28,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 476 transitions, 7690 flow [2024-06-28 01:24:29,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 476 transitions, 7295 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:29,111 INFO L231 Difference]: Finished difference. Result has 238 places, 404 transitions, 6045 flow [2024-06-28 01:24:29,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5260, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6045, PETRI_PLACES=238, PETRI_TRANSITIONS=404} [2024-06-28 01:24:29,120 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 183 predicate places. [2024-06-28 01:24:29,121 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 404 transitions, 6045 flow [2024-06-28 01:24:29,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:29,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:29,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:24:29,121 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:29,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash -257161472, now seen corresponding path program 5 times [2024-06-28 01:24:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435713822] [2024-06-28 01:24:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:29,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:30,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:30,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435713822] [2024-06-28 01:24:30,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435713822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:30,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:30,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:30,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170421005] [2024-06-28 01:24:30,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:30,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:30,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:30,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:30,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:30,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 404 transitions, 6045 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:30,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:30,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:30,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:32,868 INFO L124 PetriNetUnfolderBase]: 7440/11848 cut-off events. [2024-06-28 01:24:32,868 INFO L125 PetriNetUnfolderBase]: For 540136/540215 co-relation queries the response was YES. [2024-06-28 01:24:32,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84280 conditions, 11848 events. 7440/11848 cut-off events. For 540136/540215 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 78872 event pairs, 1906 based on Foata normal form. 16/11573 useless extension candidates. Maximal degree in co-relation 84173. Up to 9553 conditions per place. [2024-06-28 01:24:33,019 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 324 selfloop transitions, 131 changer transitions 0/477 dead transitions. [2024-06-28 01:24:33,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 477 transitions, 7281 flow [2024-06-28 01:24:33,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-28 01:24:33,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326530612244897 [2024-06-28 01:24:33,021 INFO L175 Difference]: Start difference. First operand has 238 places, 404 transitions, 6045 flow. Second operand 10 states and 261 transitions. [2024-06-28 01:24:33,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 477 transitions, 7281 flow [2024-06-28 01:24:33,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 477 transitions, 7170 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 01:24:33,874 INFO L231 Difference]: Finished difference. Result has 245 places, 406 transitions, 6240 flow [2024-06-28 01:24:33,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6240, PETRI_PLACES=245, PETRI_TRANSITIONS=406} [2024-06-28 01:24:33,875 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 190 predicate places. [2024-06-28 01:24:33,875 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 406 transitions, 6240 flow [2024-06-28 01:24:33,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:33,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:33,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:33,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:24:33,875 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:33,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1333003037, now seen corresponding path program 3 times [2024-06-28 01:24:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439576327] [2024-06-28 01:24:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:33,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439576327] [2024-06-28 01:24:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439576327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:35,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:35,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:35,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175005353] [2024-06-28 01:24:35,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:35,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:35,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:35,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:35,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 406 transitions, 6240 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:35,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:35,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:35,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:37,656 INFO L124 PetriNetUnfolderBase]: 7516/11745 cut-off events. [2024-06-28 01:24:37,656 INFO L125 PetriNetUnfolderBase]: For 564089/564162 co-relation queries the response was YES. [2024-06-28 01:24:37,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86211 conditions, 11745 events. 7516/11745 cut-off events. For 564089/564162 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 76223 event pairs, 1679 based on Foata normal form. 16/11543 useless extension candidates. Maximal degree in co-relation 86102. Up to 9063 conditions per place. [2024-06-28 01:24:37,805 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 290 selfloop transitions, 188 changer transitions 0/500 dead transitions. [2024-06-28 01:24:37,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 500 transitions, 8352 flow [2024-06-28 01:24:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-06-28 01:24:37,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2024-06-28 01:24:37,807 INFO L175 Difference]: Start difference. First operand has 245 places, 406 transitions, 6240 flow. Second operand 10 states and 276 transitions. [2024-06-28 01:24:37,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 500 transitions, 8352 flow [2024-06-28 01:24:38,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 500 transitions, 8078 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:38,688 INFO L231 Difference]: Finished difference. Result has 248 places, 421 transitions, 6624 flow [2024-06-28 01:24:38,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6624, PETRI_PLACES=248, PETRI_TRANSITIONS=421} [2024-06-28 01:24:38,689 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 193 predicate places. [2024-06-28 01:24:38,689 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 421 transitions, 6624 flow [2024-06-28 01:24:38,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:38,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:38,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:38,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:24:38,690 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:38,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash -257011587, now seen corresponding path program 4 times [2024-06-28 01:24:38,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:38,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260746190] [2024-06-28 01:24:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:39,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:39,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260746190] [2024-06-28 01:24:39,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260746190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:39,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:39,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:39,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077377739] [2024-06-28 01:24:39,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:39,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:39,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:40,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:40,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 421 transitions, 6624 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:40,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:40,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:40,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:42,463 INFO L124 PetriNetUnfolderBase]: 7506/11735 cut-off events. [2024-06-28 01:24:42,463 INFO L125 PetriNetUnfolderBase]: For 577083/577156 co-relation queries the response was YES. [2024-06-28 01:24:42,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86742 conditions, 11735 events. 7506/11735 cut-off events. For 577083/577156 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 76225 event pairs, 1681 based on Foata normal form. 16/11531 useless extension candidates. Maximal degree in co-relation 86632. Up to 9131 conditions per place. [2024-06-28 01:24:42,585 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 294 selfloop transitions, 181 changer transitions 0/497 dead transitions. [2024-06-28 01:24:42,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 497 transitions, 8278 flow [2024-06-28 01:24:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-28 01:24:42,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5530612244897959 [2024-06-28 01:24:42,587 INFO L175 Difference]: Start difference. First operand has 248 places, 421 transitions, 6624 flow. Second operand 10 states and 271 transitions. [2024-06-28 01:24:42,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 497 transitions, 8278 flow [2024-06-28 01:24:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 497 transitions, 7988 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-28 01:24:43,521 INFO L231 Difference]: Finished difference. Result has 254 places, 421 transitions, 6708 flow [2024-06-28 01:24:43,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6334, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6708, PETRI_PLACES=254, PETRI_TRANSITIONS=421} [2024-06-28 01:24:43,522 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-28 01:24:43,522 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 421 transitions, 6708 flow [2024-06-28 01:24:43,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:43,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:43,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:43,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:24:43,522 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:43,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash 984429381, now seen corresponding path program 5 times [2024-06-28 01:24:43,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:43,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044627474] [2024-06-28 01:24:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:43,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044627474] [2024-06-28 01:24:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044627474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:44,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:44,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:44,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439962823] [2024-06-28 01:24:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:44,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:44,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:44,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:44,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 421 transitions, 6708 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:44,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:44,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:44,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:46,913 INFO L124 PetriNetUnfolderBase]: 7600/12109 cut-off events. [2024-06-28 01:24:46,914 INFO L125 PetriNetUnfolderBase]: For 603571/603640 co-relation queries the response was YES. [2024-06-28 01:24:47,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88983 conditions, 12109 events. 7600/12109 cut-off events. For 603571/603640 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 80954 event pairs, 1784 based on Foata normal form. 6/11816 useless extension candidates. Maximal degree in co-relation 88872. Up to 9401 conditions per place. [2024-06-28 01:24:47,065 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 324 selfloop transitions, 135 changer transitions 0/481 dead transitions. [2024-06-28 01:24:47,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 481 transitions, 7913 flow [2024-06-28 01:24:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:24:47,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328798185941043 [2024-06-28 01:24:47,066 INFO L175 Difference]: Start difference. First operand has 254 places, 421 transitions, 6708 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:24:47,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 481 transitions, 7913 flow [2024-06-28 01:24:48,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 481 transitions, 7467 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:48,060 INFO L231 Difference]: Finished difference. Result has 255 places, 424 transitions, 6600 flow [2024-06-28 01:24:48,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6262, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6600, PETRI_PLACES=255, PETRI_TRANSITIONS=424} [2024-06-28 01:24:48,061 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 200 predicate places. [2024-06-28 01:24:48,061 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 424 transitions, 6600 flow [2024-06-28 01:24:48,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:48,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:48,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:48,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:24:48,061 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:48,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash -251649207, now seen corresponding path program 6 times [2024-06-28 01:24:48,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:48,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888419897] [2024-06-28 01:24:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:48,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888419897] [2024-06-28 01:24:49,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888419897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:49,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:49,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461011976] [2024-06-28 01:24:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:49,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:49,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 424 transitions, 6600 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:49,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:49,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:49,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:51,824 INFO L124 PetriNetUnfolderBase]: 7685/12166 cut-off events. [2024-06-28 01:24:51,825 INFO L125 PetriNetUnfolderBase]: For 619186/619249 co-relation queries the response was YES. [2024-06-28 01:24:51,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89765 conditions, 12166 events. 7685/12166 cut-off events. For 619186/619249 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 80656 event pairs, 1727 based on Foata normal form. 6/11901 useless extension candidates. Maximal degree in co-relation 89653. Up to 9334 conditions per place. [2024-06-28 01:24:51,991 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 309 selfloop transitions, 180 changer transitions 0/511 dead transitions. [2024-06-28 01:24:51,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 511 transitions, 8404 flow [2024-06-28 01:24:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-28 01:24:51,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448979591836735 [2024-06-28 01:24:51,993 INFO L175 Difference]: Start difference. First operand has 255 places, 424 transitions, 6600 flow. Second operand 10 states and 267 transitions. [2024-06-28 01:24:51,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 511 transitions, 8404 flow [2024-06-28 01:24:53,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 511 transitions, 8102 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:53,128 INFO L231 Difference]: Finished difference. Result has 259 places, 439 transitions, 7065 flow [2024-06-28 01:24:53,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6298, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7065, PETRI_PLACES=259, PETRI_TRANSITIONS=439} [2024-06-28 01:24:53,129 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 204 predicate places. [2024-06-28 01:24:53,129 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 439 transitions, 7065 flow [2024-06-28 01:24:53,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:53,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:53,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:53,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:24:53,129 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:53,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash -251654942, now seen corresponding path program 6 times [2024-06-28 01:24:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:53,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113506509] [2024-06-28 01:24:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:54,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113506509] [2024-06-28 01:24:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113506509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:54,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:54,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60939478] [2024-06-28 01:24:54,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:54,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:54,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:54,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:54,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:54,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 439 transitions, 7065 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:54,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:54,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:54,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:56,897 INFO L124 PetriNetUnfolderBase]: 7731/12316 cut-off events. [2024-06-28 01:24:56,897 INFO L125 PetriNetUnfolderBase]: For 640629/640698 co-relation queries the response was YES. [2024-06-28 01:24:56,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91088 conditions, 12316 events. 7731/12316 cut-off events. For 640629/640698 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 82584 event pairs, 1980 based on Foata normal form. 6/12020 useless extension candidates. Maximal degree in co-relation 90974. Up to 10118 conditions per place. [2024-06-28 01:24:57,044 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 363 selfloop transitions, 113 changer transitions 0/498 dead transitions. [2024-06-28 01:24:57,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 498 transitions, 8289 flow [2024-06-28 01:24:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:24:57,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:24:57,046 INFO L175 Difference]: Start difference. First operand has 259 places, 439 transitions, 7065 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:24:57,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 498 transitions, 8289 flow [2024-06-28 01:24:58,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 498 transitions, 7939 flow, removed 88 selfloop flow, removed 4 redundant places. [2024-06-28 01:24:58,347 INFO L231 Difference]: Finished difference. Result has 264 places, 441 transitions, 6988 flow [2024-06-28 01:24:58,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6715, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6988, PETRI_PLACES=264, PETRI_TRANSITIONS=441} [2024-06-28 01:24:58,348 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 209 predicate places. [2024-06-28 01:24:58,348 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 441 transitions, 6988 flow [2024-06-28 01:24:58,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:58,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:58,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:58,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:24:58,349 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:58,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash -251654787, now seen corresponding path program 7 times [2024-06-28 01:24:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:58,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434306558] [2024-06-28 01:24:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:59,423 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 01:24:59,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434306558] [2024-06-28 01:24:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434306558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:59,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851608143] [2024-06-28 01:24:59,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:59,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:59,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 441 transitions, 6988 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:59,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:59,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:59,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:02,184 INFO L124 PetriNetUnfolderBase]: 7756/12264 cut-off events. [2024-06-28 01:25:02,184 INFO L125 PetriNetUnfolderBase]: For 658750/658813 co-relation queries the response was YES. [2024-06-28 01:25:02,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91050 conditions, 12264 events. 7756/12264 cut-off events. For 658750/658813 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 81332 event pairs, 1797 based on Foata normal form. 6/12001 useless extension candidates. Maximal degree in co-relation 90935. Up to 9338 conditions per place. [2024-06-28 01:25:02,332 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 307 selfloop transitions, 193 changer transitions 0/522 dead transitions. [2024-06-28 01:25:02,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 522 transitions, 8688 flow [2024-06-28 01:25:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-28 01:25:02,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2024-06-28 01:25:02,334 INFO L175 Difference]: Start difference. First operand has 264 places, 441 transitions, 6988 flow. Second operand 10 states and 268 transitions. [2024-06-28 01:25:02,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 522 transitions, 8688 flow [2024-06-28 01:25:03,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 522 transitions, 8450 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:25:03,447 INFO L231 Difference]: Finished difference. Result has 268 places, 450 transitions, 7350 flow [2024-06-28 01:25:03,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6750, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7350, PETRI_PLACES=268, PETRI_TRANSITIONS=450} [2024-06-28 01:25:03,448 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 213 predicate places. [2024-06-28 01:25:03,448 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 450 transitions, 7350 flow [2024-06-28 01:25:03,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:03,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:03,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:03,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:25:03,449 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:03,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:03,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2031383528, now seen corresponding path program 1 times [2024-06-28 01:25:03,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:03,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898682543] [2024-06-28 01:25:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:03,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:04,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898682543] [2024-06-28 01:25:04,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898682543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:04,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:04,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005392178] [2024-06-28 01:25:04,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:04,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:04,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:04,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:25:04,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 450 transitions, 7350 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:04,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:04,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:25:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:06,709 INFO L124 PetriNetUnfolderBase]: 8453/13207 cut-off events. [2024-06-28 01:25:06,710 INFO L125 PetriNetUnfolderBase]: For 698643/698677 co-relation queries the response was YES. [2024-06-28 01:25:06,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96588 conditions, 13207 events. 8453/13207 cut-off events. For 698643/698677 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 86145 event pairs, 2481 based on Foata normal form. 37/12971 useless extension candidates. Maximal degree in co-relation 96472. Up to 11624 conditions per place. [2024-06-28 01:25:07,169 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 403 selfloop transitions, 32 changer transitions 0/497 dead transitions. [2024-06-28 01:25:07,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 497 transitions, 8607 flow [2024-06-28 01:25:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:25:07,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-28 01:25:07,170 INFO L175 Difference]: Start difference. First operand has 268 places, 450 transitions, 7350 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:25:07,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 497 transitions, 8607 flow [2024-06-28 01:25:08,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 497 transitions, 8282 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-28 01:25:08,470 INFO L231 Difference]: Finished difference. Result has 270 places, 460 transitions, 7247 flow [2024-06-28 01:25:08,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7025, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7247, PETRI_PLACES=270, PETRI_TRANSITIONS=460} [2024-06-28 01:25:08,471 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 215 predicate places. [2024-06-28 01:25:08,471 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 460 transitions, 7247 flow [2024-06-28 01:25:08,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:08,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:08,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:08,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:25:08,471 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:08,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2031383094, now seen corresponding path program 2 times [2024-06-28 01:25:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:08,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089880316] [2024-06-28 01:25:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:08,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:09,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089880316] [2024-06-28 01:25:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089880316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:09,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:09,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:25:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047568021] [2024-06-28 01:25:09,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:09,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:25:09,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:25:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:25:09,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:25:09,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 460 transitions, 7247 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:09,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:09,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:25:09,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:11,920 INFO L124 PetriNetUnfolderBase]: 8542/13707 cut-off events. [2024-06-28 01:25:11,920 INFO L125 PetriNetUnfolderBase]: For 720112/720139 co-relation queries the response was YES. [2024-06-28 01:25:12,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99327 conditions, 13707 events. 8542/13707 cut-off events. For 720112/720139 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 92797 event pairs, 2497 based on Foata normal form. 28/13367 useless extension candidates. Maximal degree in co-relation 99208. Up to 11313 conditions per place. [2024-06-28 01:25:12,147 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 370 selfloop transitions, 69 changer transitions 0/501 dead transitions. [2024-06-28 01:25:12,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 501 transitions, 8613 flow [2024-06-28 01:25:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:25:12,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-28 01:25:12,149 INFO L175 Difference]: Start difference. First operand has 270 places, 460 transitions, 7247 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:25:12,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 501 transitions, 8613 flow [2024-06-28 01:25:13,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 501 transitions, 8558 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 01:25:13,143 INFO L231 Difference]: Finished difference. Result has 276 places, 468 transitions, 7481 flow [2024-06-28 01:25:13,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7192, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7481, PETRI_PLACES=276, PETRI_TRANSITIONS=468} [2024-06-28 01:25:13,144 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 221 predicate places. [2024-06-28 01:25:13,144 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 468 transitions, 7481 flow [2024-06-28 01:25:13,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:13,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:13,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:13,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:25:13,145 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:13,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1272025587, now seen corresponding path program 8 times [2024-06-28 01:25:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:13,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722276428] [2024-06-28 01:25:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:14,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722276428] [2024-06-28 01:25:14,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722276428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:14,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:14,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:25:14,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040681833] [2024-06-28 01:25:14,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:14,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:25:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:25:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:25:14,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:14,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 468 transitions, 7481 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:14,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:14,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:14,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:17,177 INFO L124 PetriNetUnfolderBase]: 7963/12476 cut-off events. [2024-06-28 01:25:17,177 INFO L125 PetriNetUnfolderBase]: For 735542/735601 co-relation queries the response was YES. [2024-06-28 01:25:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96561 conditions, 12476 events. 7963/12476 cut-off events. For 735542/735601 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 81802 event pairs, 2027 based on Foata normal form. 12/12242 useless extension candidates. Maximal degree in co-relation 96438. Up to 10539 conditions per place. [2024-06-28 01:25:17,375 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 438 selfloop transitions, 84 changer transitions 0/546 dead transitions. [2024-06-28 01:25:17,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 546 transitions, 9621 flow [2024-06-28 01:25:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-28 01:25:17,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139146567717996 [2024-06-28 01:25:17,376 INFO L175 Difference]: Start difference. First operand has 276 places, 468 transitions, 7481 flow. Second operand 11 states and 277 transitions. [2024-06-28 01:25:17,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 546 transitions, 9621 flow [2024-06-28 01:25:18,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 546 transitions, 9505 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 01:25:18,788 INFO L231 Difference]: Finished difference. Result has 284 places, 474 transitions, 7685 flow [2024-06-28 01:25:18,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7365, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7685, PETRI_PLACES=284, PETRI_TRANSITIONS=474} [2024-06-28 01:25:18,789 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 229 predicate places. [2024-06-28 01:25:18,789 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 474 transitions, 7685 flow [2024-06-28 01:25:18,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:18,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:18,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:18,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:25:18,790 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:18,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1272025742, now seen corresponding path program 7 times [2024-06-28 01:25:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:18,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534257158] [2024-06-28 01:25:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:18,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:20,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534257158] [2024-06-28 01:25:20,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534257158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:20,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:20,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:25:20,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692418251] [2024-06-28 01:25:20,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:20,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:25:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:20,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:25:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:25:20,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:20,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 474 transitions, 7685 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:20,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:20,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:20,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:23,023 INFO L124 PetriNetUnfolderBase]: 7957/12439 cut-off events. [2024-06-28 01:25:23,024 INFO L125 PetriNetUnfolderBase]: For 750485/750542 co-relation queries the response was YES. [2024-06-28 01:25:23,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96660 conditions, 12439 events. 7957/12439 cut-off events. For 750485/750542 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 81409 event pairs, 2088 based on Foata normal form. 14/12219 useless extension candidates. Maximal degree in co-relation 96536. Up to 10942 conditions per place. [2024-06-28 01:25:23,231 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 451 selfloop transitions, 54 changer transitions 0/529 dead transitions. [2024-06-28 01:25:23,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 529 transitions, 8943 flow [2024-06-28 01:25:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-06-28 01:25:23,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712430426716141 [2024-06-28 01:25:23,232 INFO L175 Difference]: Start difference. First operand has 284 places, 474 transitions, 7685 flow. Second operand 11 states and 254 transitions. [2024-06-28 01:25:23,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 529 transitions, 8943 flow [2024-06-28 01:25:24,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 529 transitions, 7963 flow, removed 95 selfloop flow, removed 13 redundant places. [2024-06-28 01:25:24,696 INFO L231 Difference]: Finished difference. Result has 282 places, 476 transitions, 6857 flow [2024-06-28 01:25:24,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6719, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6857, PETRI_PLACES=282, PETRI_TRANSITIONS=476} [2024-06-28 01:25:24,696 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 227 predicate places. [2024-06-28 01:25:24,696 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 476 transitions, 6857 flow [2024-06-28 01:25:24,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:24,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:24,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:24,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:25:24,697 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:24,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1271818197, now seen corresponding path program 9 times [2024-06-28 01:25:24,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:24,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864552931] [2024-06-28 01:25:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:25,772 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 01:25:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864552931] [2024-06-28 01:25:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864552931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:25:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686015961] [2024-06-28 01:25:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:25:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:25:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:25:25,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:25,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 476 transitions, 6857 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:25,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:25,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:25,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:28,306 INFO L124 PetriNetUnfolderBase]: 8003/12512 cut-off events. [2024-06-28 01:25:28,307 INFO L125 PetriNetUnfolderBase]: For 755987/756044 co-relation queries the response was YES. [2024-06-28 01:25:28,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93377 conditions, 12512 events. 8003/12512 cut-off events. For 755987/756044 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 81940 event pairs, 2144 based on Foata normal form. 14/12283 useless extension candidates. Maximal degree in co-relation 93255. Up to 10826 conditions per place. [2024-06-28 01:25:28,490 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 457 selfloop transitions, 51 changer transitions 0/532 dead transitions. [2024-06-28 01:25:28,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 532 transitions, 8154 flow [2024-06-28 01:25:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:25:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:25:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:25:28,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2024-06-28 01:25:28,491 INFO L175 Difference]: Start difference. First operand has 282 places, 476 transitions, 6857 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:25:28,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 532 transitions, 8154 flow [2024-06-28 01:25:29,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 532 transitions, 8023 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:29,699 INFO L231 Difference]: Finished difference. Result has 281 places, 479 transitions, 6904 flow [2024-06-28 01:25:29,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6904, PETRI_PLACES=281, PETRI_TRANSITIONS=479} [2024-06-28 01:25:29,701 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 226 predicate places. [2024-06-28 01:25:29,701 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 479 transitions, 6904 flow [2024-06-28 01:25:29,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:29,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:29,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:25:29,702 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:29,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash -987612057, now seen corresponding path program 10 times [2024-06-28 01:25:29,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:29,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963058486] [2024-06-28 01:25:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:30,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:30,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963058486] [2024-06-28 01:25:30,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963058486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:30,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:30,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:25:30,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980584589] [2024-06-28 01:25:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:30,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:25:30,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:30,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:25:30,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:25:30,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:30,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 479 transitions, 6904 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:30,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:30,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:30,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:33,343 INFO L124 PetriNetUnfolderBase]: 8049/12583 cut-off events. [2024-06-28 01:25:33,344 INFO L125 PetriNetUnfolderBase]: For 777987/778044 co-relation queries the response was YES. [2024-06-28 01:25:33,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94397 conditions, 12583 events. 8049/12583 cut-off events. For 777987/778044 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 82577 event pairs, 2168 based on Foata normal form. 14/12352 useless extension candidates. Maximal degree in co-relation 94274. Up to 11066 conditions per place. [2024-06-28 01:25:33,519 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 476 selfloop transitions, 29 changer transitions 0/529 dead transitions. [2024-06-28 01:25:33,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 529 transitions, 8162 flow [2024-06-28 01:25:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:25:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:25:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:25:33,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011337868480725 [2024-06-28 01:25:33,522 INFO L175 Difference]: Start difference. First operand has 281 places, 479 transitions, 6904 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:25:33,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 529 transitions, 8162 flow [2024-06-28 01:25:34,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 529 transitions, 8020 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:34,860 INFO L231 Difference]: Finished difference. Result has 283 places, 482 transitions, 6902 flow [2024-06-28 01:25:34,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6762, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6902, PETRI_PLACES=283, PETRI_TRANSITIONS=482} [2024-06-28 01:25:34,862 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 228 predicate places. [2024-06-28 01:25:34,862 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 482 transitions, 6902 flow [2024-06-28 01:25:34,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:34,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:34,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:34,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:25:34,863 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:34,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash -977158361, now seen corresponding path program 1 times [2024-06-28 01:25:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:34,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236492608] [2024-06-28 01:25:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:35,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:35,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236492608] [2024-06-28 01:25:35,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236492608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:35,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:35,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:35,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688049982] [2024-06-28 01:25:35,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:35,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:35,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:25:35,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 482 transitions, 6902 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:35,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:35,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:25:35,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:38,619 INFO L124 PetriNetUnfolderBase]: 8733/13546 cut-off events. [2024-06-28 01:25:38,620 INFO L125 PetriNetUnfolderBase]: For 809565/809623 co-relation queries the response was YES. [2024-06-28 01:25:38,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99394 conditions, 13546 events. 8733/13546 cut-off events. For 809565/809623 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 87552 event pairs, 2432 based on Foata normal form. 10/13279 useless extension candidates. Maximal degree in co-relation 99270. Up to 12079 conditions per place. [2024-06-28 01:25:38,808 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 481 selfloop transitions, 32 changer transitions 0/535 dead transitions. [2024-06-28 01:25:38,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 535 transitions, 8232 flow [2024-06-28 01:25:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:25:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:25:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:25:38,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47392290249433106 [2024-06-28 01:25:38,809 INFO L175 Difference]: Start difference. First operand has 283 places, 482 transitions, 6902 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:25:38,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 535 transitions, 8232 flow [2024-06-28 01:25:39,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 535 transitions, 8068 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:39,685 INFO L231 Difference]: Finished difference. Result has 287 places, 494 transitions, 7017 flow [2024-06-28 01:25:39,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6772, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7017, PETRI_PLACES=287, PETRI_TRANSITIONS=494} [2024-06-28 01:25:39,686 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 232 predicate places. [2024-06-28 01:25:39,686 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 494 transitions, 7017 flow [2024-06-28 01:25:39,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:39,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:39,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:39,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:25:39,687 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:39,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:39,687 INFO L85 PathProgramCache]: Analyzing trace with hash 328417847, now seen corresponding path program 11 times [2024-06-28 01:25:39,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:39,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945223914] [2024-06-28 01:25:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:39,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:40,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:40,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945223914] [2024-06-28 01:25:40,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945223914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:40,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:40,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:25:40,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566590030] [2024-06-28 01:25:40,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:40,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:25:40,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:40,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:25:40,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:25:40,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:40,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 494 transitions, 7017 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:40,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:40,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:40,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:43,901 INFO L124 PetriNetUnfolderBase]: 8101/12695 cut-off events. [2024-06-28 01:25:43,902 INFO L125 PetriNetUnfolderBase]: For 809984/810045 co-relation queries the response was YES. [2024-06-28 01:25:44,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94898 conditions, 12695 events. 8101/12695 cut-off events. For 809984/810045 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 83763 event pairs, 2025 based on Foata normal form. 14/12445 useless extension candidates. Maximal degree in co-relation 94771. Up to 10909 conditions per place. [2024-06-28 01:25:44,440 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 471 selfloop transitions, 54 changer transitions 0/550 dead transitions. [2024-06-28 01:25:44,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 550 transitions, 8311 flow [2024-06-28 01:25:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:25:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:25:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:25:44,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-28 01:25:44,442 INFO L175 Difference]: Start difference. First operand has 287 places, 494 transitions, 7017 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:25:44,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 550 transitions, 8311 flow [2024-06-28 01:25:45,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 550 transitions, 8229 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:25:45,720 INFO L231 Difference]: Finished difference. Result has 292 places, 494 transitions, 7051 flow [2024-06-28 01:25:45,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6935, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7051, PETRI_PLACES=292, PETRI_TRANSITIONS=494} [2024-06-28 01:25:45,721 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 237 predicate places. [2024-06-28 01:25:45,721 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 494 transitions, 7051 flow [2024-06-28 01:25:45,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:45,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:45,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:45,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:25:45,721 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:45,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1782954822, now seen corresponding path program 2 times [2024-06-28 01:25:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549045063] [2024-06-28 01:25:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549045063] [2024-06-28 01:25:46,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549045063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:46,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:46,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224932271] [2024-06-28 01:25:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:46,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:46,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:25:46,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 494 transitions, 7051 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:46,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:46,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:25:46,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:49,544 INFO L124 PetriNetUnfolderBase]: 8816/13750 cut-off events. [2024-06-28 01:25:49,545 INFO L125 PetriNetUnfolderBase]: For 838109/838129 co-relation queries the response was YES. [2024-06-28 01:25:49,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99075 conditions, 13750 events. 8816/13750 cut-off events. For 838109/838129 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 89735 event pairs, 2647 based on Foata normal form. 23/13499 useless extension candidates. Maximal degree in co-relation 98947. Up to 12206 conditions per place. [2024-06-28 01:25:49,754 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 437 selfloop transitions, 23 changer transitions 0/523 dead transitions. [2024-06-28 01:25:49,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 523 transitions, 8259 flow [2024-06-28 01:25:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:25:49,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-28 01:25:49,755 INFO L175 Difference]: Start difference. First operand has 292 places, 494 transitions, 7051 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:25:49,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 523 transitions, 8259 flow [2024-06-28 01:25:51,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 523 transitions, 8115 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:51,187 INFO L231 Difference]: Finished difference. Result has 292 places, 497 transitions, 7013 flow [2024-06-28 01:25:51,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7013, PETRI_PLACES=292, PETRI_TRANSITIONS=497} [2024-06-28 01:25:51,188 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 237 predicate places. [2024-06-28 01:25:51,189 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 497 transitions, 7013 flow [2024-06-28 01:25:51,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:51,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:51,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:51,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:25:51,205 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:51,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:51,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1782955256, now seen corresponding path program 3 times [2024-06-28 01:25:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:51,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045524255] [2024-06-28 01:25:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:51,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045524255] [2024-06-28 01:25:51,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045524255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:51,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:51,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:51,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059462117] [2024-06-28 01:25:51,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:51,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:51,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:52,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:25:52,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 497 transitions, 7013 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:52,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:52,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:25:52,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:55,077 INFO L124 PetriNetUnfolderBase]: 8812/13749 cut-off events. [2024-06-28 01:25:55,077 INFO L125 PetriNetUnfolderBase]: For 849761/849784 co-relation queries the response was YES. [2024-06-28 01:25:55,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98573 conditions, 13749 events. 8812/13749 cut-off events. For 849761/849784 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 89755 event pairs, 2632 based on Foata normal form. 24/13498 useless extension candidates. Maximal degree in co-relation 98444. Up to 12195 conditions per place. [2024-06-28 01:25:55,279 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 426 selfloop transitions, 30 changer transitions 0/519 dead transitions. [2024-06-28 01:25:55,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 519 transitions, 8149 flow [2024-06-28 01:25:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:25:55,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-28 01:25:55,281 INFO L175 Difference]: Start difference. First operand has 292 places, 497 transitions, 7013 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:25:55,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 519 transitions, 8149 flow [2024-06-28 01:25:56,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 519 transitions, 8017 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:57,003 INFO L231 Difference]: Finished difference. Result has 294 places, 497 transitions, 6949 flow [2024-06-28 01:25:57,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6881, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6949, PETRI_PLACES=294, PETRI_TRANSITIONS=497} [2024-06-28 01:25:57,004 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 239 predicate places. [2024-06-28 01:25:57,004 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 497 transitions, 6949 flow [2024-06-28 01:25:57,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:57,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:57,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:57,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:25:57,005 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:57,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1821173468, now seen corresponding path program 3 times [2024-06-28 01:25:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:57,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465776369] [2024-06-28 01:25:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:57,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:57,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465776369] [2024-06-28 01:25:57,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465776369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:57,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:57,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:25:57,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802561378] [2024-06-28 01:25:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:57,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:25:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:25:57,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:25:57,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:25:57,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 497 transitions, 6949 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:57,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:57,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:25:57,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:00,780 INFO L124 PetriNetUnfolderBase]: 8803/13736 cut-off events. [2024-06-28 01:26:00,780 INFO L125 PetriNetUnfolderBase]: For 861723/861743 co-relation queries the response was YES. [2024-06-28 01:26:00,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98136 conditions, 13736 events. 8803/13736 cut-off events. For 861723/861743 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 89707 event pairs, 2631 based on Foata normal form. 23/13485 useless extension candidates. Maximal degree in co-relation 98007. Up to 12236 conditions per place. [2024-06-28 01:26:00,999 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 437 selfloop transitions, 18 changer transitions 0/518 dead transitions. [2024-06-28 01:26:00,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 518 transitions, 7933 flow [2024-06-28 01:26:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:26:01,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518950437317784 [2024-06-28 01:26:01,001 INFO L175 Difference]: Start difference. First operand has 294 places, 497 transitions, 6949 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:26:01,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 518 transitions, 7933 flow [2024-06-28 01:26:02,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 518 transitions, 7706 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:02,452 INFO L231 Difference]: Finished difference. Result has 294 places, 497 transitions, 6764 flow [2024-06-28 01:26:02,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6722, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6764, PETRI_PLACES=294, PETRI_TRANSITIONS=497} [2024-06-28 01:26:02,453 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 239 predicate places. [2024-06-28 01:26:02,453 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 497 transitions, 6764 flow [2024-06-28 01:26:02,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:02,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:02,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:02,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:26:02,454 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:02,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:02,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2057818323, now seen corresponding path program 1 times [2024-06-28 01:26:02,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:02,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608867739] [2024-06-28 01:26:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:02,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:03,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608867739] [2024-06-28 01:26:03,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608867739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:03,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:03,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:03,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794612787] [2024-06-28 01:26:03,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:03,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:03,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:26:03,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 497 transitions, 6764 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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 01:26:03,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:03,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:26:03,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:06,363 INFO L124 PetriNetUnfolderBase]: 9230/14174 cut-off events. [2024-06-28 01:26:06,363 INFO L125 PetriNetUnfolderBase]: For 876761/876761 co-relation queries the response was YES. [2024-06-28 01:26:06,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101237 conditions, 14174 events. 9230/14174 cut-off events. For 876761/876761 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 90496 event pairs, 2628 based on Foata normal form. 1/13902 useless extension candidates. Maximal degree in co-relation 101109. Up to 12950 conditions per place. [2024-06-28 01:26:06,582 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 484 selfloop transitions, 41 changer transitions 0/533 dead transitions. [2024-06-28 01:26:06,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 533 transitions, 8150 flow [2024-06-28 01:26:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:26:06,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-28 01:26:06,584 INFO L175 Difference]: Start difference. First operand has 294 places, 497 transitions, 6764 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:26:06,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 533 transitions, 8150 flow [2024-06-28 01:26:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 533 transitions, 8081 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:08,371 INFO L231 Difference]: Finished difference. Result has 295 places, 503 transitions, 6874 flow [2024-06-28 01:26:08,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6695, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6874, PETRI_PLACES=295, PETRI_TRANSITIONS=503} [2024-06-28 01:26:08,373 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 240 predicate places. [2024-06-28 01:26:08,373 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 503 transitions, 6874 flow [2024-06-28 01:26:08,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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 01:26:08,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:08,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:26:08,374 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:08,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash 762749855, now seen corresponding path program 2 times [2024-06-28 01:26:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:08,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535395036] [2024-06-28 01:26:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535395036] [2024-06-28 01:26:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535395036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:09,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:09,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289547072] [2024-06-28 01:26:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:09,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:26:09,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 503 transitions, 6874 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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 01:26:09,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:09,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:26:09,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:12,538 INFO L124 PetriNetUnfolderBase]: 9247/14201 cut-off events. [2024-06-28 01:26:12,538 INFO L125 PetriNetUnfolderBase]: For 892190/892190 co-relation queries the response was YES. [2024-06-28 01:26:12,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101126 conditions, 14201 events. 9247/14201 cut-off events. For 892190/892190 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 90814 event pairs, 2628 based on Foata normal form. 1/13928 useless extension candidates. Maximal degree in co-relation 100997. Up to 12968 conditions per place. [2024-06-28 01:26:12,758 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 485 selfloop transitions, 42 changer transitions 0/535 dead transitions. [2024-06-28 01:26:12,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 535 transitions, 8247 flow [2024-06-28 01:26:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:26:12,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-06-28 01:26:12,760 INFO L175 Difference]: Start difference. First operand has 295 places, 503 transitions, 6874 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:26:12,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 535 transitions, 8247 flow [2024-06-28 01:26:14,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 535 transitions, 8163 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:26:14,461 INFO L231 Difference]: Finished difference. Result has 299 places, 506 transitions, 6929 flow [2024-06-28 01:26:14,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6929, PETRI_PLACES=299, PETRI_TRANSITIONS=506} [2024-06-28 01:26:14,462 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 244 predicate places. [2024-06-28 01:26:14,463 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 506 transitions, 6929 flow [2024-06-28 01:26:14,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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 01:26:14,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:14,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:14,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:26:14,465 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:14,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:14,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2057638585, now seen corresponding path program 1 times [2024-06-28 01:26:14,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:14,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993811964] [2024-06-28 01:26:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:14,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:15,257 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 01:26:15,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993811964] [2024-06-28 01:26:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993811964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:15,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:15,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:15,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367678170] [2024-06-28 01:26:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:15,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:26:15,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 506 transitions, 6929 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:15,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:15,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:26:15,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:18,782 INFO L124 PetriNetUnfolderBase]: 8914/13803 cut-off events. [2024-06-28 01:26:18,783 INFO L125 PetriNetUnfolderBase]: For 913885/913905 co-relation queries the response was YES. [2024-06-28 01:26:18,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98528 conditions, 13803 events. 8914/13803 cut-off events. For 913885/913905 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 89111 event pairs, 2594 based on Foata normal form. 23/13570 useless extension candidates. Maximal degree in co-relation 98397. Up to 12210 conditions per place. [2024-06-28 01:26:18,966 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 443 selfloop transitions, 38 changer transitions 0/547 dead transitions. [2024-06-28 01:26:18,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 547 transitions, 8262 flow [2024-06-28 01:26:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:26:18,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-28 01:26:18,967 INFO L175 Difference]: Start difference. First operand has 299 places, 506 transitions, 6929 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:26:18,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 547 transitions, 8262 flow [2024-06-28 01:26:20,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 547 transitions, 8178 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:20,364 INFO L231 Difference]: Finished difference. Result has 302 places, 512 transitions, 7014 flow [2024-06-28 01:26:20,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6845, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7014, PETRI_PLACES=302, PETRI_TRANSITIONS=512} [2024-06-28 01:26:20,365 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 247 predicate places. [2024-06-28 01:26:20,365 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 512 transitions, 7014 flow [2024-06-28 01:26:20,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:20,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:20,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:20,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:26:20,366 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:20,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash -827926397, now seen corresponding path program 2 times [2024-06-28 01:26:20,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:20,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364515178] [2024-06-28 01:26:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:21,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:21,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364515178] [2024-06-28 01:26:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364515178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:21,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:21,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:21,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052357138] [2024-06-28 01:26:21,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:21,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:21,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:21,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:21,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:26:21,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 512 transitions, 7014 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:21,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:21,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:26:21,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:24,237 INFO L124 PetriNetUnfolderBase]: 8965/13891 cut-off events. [2024-06-28 01:26:24,237 INFO L125 PetriNetUnfolderBase]: For 941289/941312 co-relation queries the response was YES. [2024-06-28 01:26:24,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100211 conditions, 13891 events. 8965/13891 cut-off events. For 941289/941312 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 89907 event pairs, 2557 based on Foata normal form. 25/13654 useless extension candidates. Maximal degree in co-relation 100079. Up to 12252 conditions per place. [2024-06-28 01:26:24,435 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 434 selfloop transitions, 43 changer transitions 0/543 dead transitions. [2024-06-28 01:26:24,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 543 transitions, 8264 flow [2024-06-28 01:26:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:26:24,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478134110787172 [2024-06-28 01:26:24,439 INFO L175 Difference]: Start difference. First operand has 302 places, 512 transitions, 7014 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:26:24,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 543 transitions, 8264 flow [2024-06-28 01:26:26,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 543 transitions, 8203 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:26:26,208 INFO L231 Difference]: Finished difference. Result has 306 places, 515 transitions, 7092 flow [2024-06-28 01:26:26,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6955, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7092, PETRI_PLACES=306, PETRI_TRANSITIONS=515} [2024-06-28 01:26:26,209 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 251 predicate places. [2024-06-28 01:26:26,209 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 515 transitions, 7092 flow [2024-06-28 01:26:26,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:26,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:26,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:26,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:26:26,210 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:26,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1821463225, now seen corresponding path program 3 times [2024-06-28 01:26:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961498881] [2024-06-28 01:26:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat