./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:59:22,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:59:22,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:59:22,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:59:22,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:59:22,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:59:22,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:59:22,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:59:22,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:59:22,761 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:59:22,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:59:22,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:59:22,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:59:22,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:59:22,762 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:59:22,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:59:22,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:59:22,763 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:59:22,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:59:22,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:59:22,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:59:22,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:59:22,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:59:22,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:59:22,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:59:22,765 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:59:22,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:59:22,765 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:59:22,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:59:22,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:59:22,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:59:22,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:59:22,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:59:22,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:59:22,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:59:22,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:59:22,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:59:22,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:59:22,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:59:22,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:59:22,768 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:59:22,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:59:22,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:59:22,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:59:22,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:59:22,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:59:22,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:59:22,955 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:59:22,955 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:59:22,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 01:59:23,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:59:23,140 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:59:23,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:59:24,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:59:24,404 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:59:24,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:59:24,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e834e0ab1/56ae878579aa48d68f6b82e4c37bb896/FLAG54ec621c0 [2024-06-28 01:59:24,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e834e0ab1/56ae878579aa48d68f6b82e4c37bb896 [2024-06-28 01:59:24,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:59:24,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:59:24,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:59:24,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:59:24,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:59:24,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:59:23" (1/2) ... [2024-06-28 01:59:24,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7137592b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:59:24, skipping insertion in model container [2024-06-28 01:59:24,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:59:23" (1/2) ... [2024-06-28 01:59:24,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b2a197d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:59:24, skipping insertion in model container [2024-06-28 01:59:24,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:59:24" (2/2) ... [2024-06-28 01:59:24,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7137592b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24, skipping insertion in model container [2024-06-28 01:59:24,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:59:24" (2/2) ... [2024-06-28 01:59:24,447 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:59:24,515 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:59:24,517 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 01:59:24,517 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 01:59:24,517 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 01:59:24,517 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:59:24,517 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 01:59:24,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:59:24,708 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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2024-06-28 01:59:24,845 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:59:24,860 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:59:24,887 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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:59:24,958 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:59:24,985 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:59:24,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24 WrapperNode [2024-06-28 01:59:24,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:59:24,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:59:24,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:59:24,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:59:24,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,030 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-28 01:59:25,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:59:25,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:59:25,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:59:25,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:59:25,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,059 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 01:59:25,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:59:25,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:59:25,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:59:25,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:59:25,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (1/1) ... [2024-06-28 01:59:25,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:59:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:59:25,099 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 01:59:25,126 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 01:59:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:59:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:59:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:59:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:59:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:59:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:59:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:59:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:59:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:59:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:59:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:59:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:59:25,144 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 01:59:25,293 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:59:25,295 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:59:25,586 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:59:25,586 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:59:25,724 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:59:25,725 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:59:25,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:59:25 BoogieIcfgContainer [2024-06-28 01:59:25,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:59:25,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:59:25,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:59:25,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:59:25,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:59:23" (1/4) ... [2024-06-28 01:59:25,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf105bc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:59:25, skipping insertion in model container [2024-06-28 01:59:25,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:59:24" (2/4) ... [2024-06-28 01:59:25,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf105bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:59:25, skipping insertion in model container [2024-06-28 01:59:25,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:24" (3/4) ... [2024-06-28 01:59:25,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf105bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:59:25, skipping insertion in model container [2024-06-28 01:59:25,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:59:25" (4/4) ... [2024-06-28 01:59:25,734 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:59:25,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:59:25,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:59:25,748 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:59:25,786 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:59:25,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:59:25,847 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:59:25,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:59:25,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:59:25,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:59:25,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:59:25,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:59:25,875 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;@13cf637f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:59:25,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:59:25,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:59:25,881 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:59:25,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:59:25,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:25,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:59:25,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:25,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash 345514193, now seen corresponding path program 1 times [2024-06-28 01:59:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:25,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249230759] [2024-06-28 01:59:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249230759] [2024-06-28 01:59:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249230759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:59:26,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402364070] [2024-06-28 01:59:26,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:26,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:59:26,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:59:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:59:26,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:59:26,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 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 01:59:26,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:26,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:59:26,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:27,505 INFO L124 PetriNetUnfolderBase]: 3076/5182 cut-off events. [2024-06-28 01:59:27,505 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-28 01:59:27,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9728 conditions, 5182 events. 3076/5182 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 33933 event pairs, 2454 based on Foata normal form. 176/4945 useless extension candidates. Maximal degree in co-relation 9716. Up to 4447 conditions per place. [2024-06-28 01:59:27,540 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:59:27,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 221 flow [2024-06-28 01:59:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:59:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:59:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 01:59:27,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-28 01:59:27,552 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-28 01:59:27,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 221 flow [2024-06-28 01:59:27,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:27,559 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:59:27,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:59:27,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:59:27,566 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:59:27,566 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 01:59:27,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:27,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:59:27,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:27,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1326691568, now seen corresponding path program 1 times [2024-06-28 01:59:27,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827571275] [2024-06-28 01:59:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827571275] [2024-06-28 01:59:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827571275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:28,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:28,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:59:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869968302] [2024-06-28 01:59:28,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:59:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:59:28,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:59:28,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:59:28,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 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 01:59:28,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:28,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:59:28,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:28,627 INFO L124 PetriNetUnfolderBase]: 3164/4662 cut-off events. [2024-06-28 01:59:28,628 INFO L125 PetriNetUnfolderBase]: For 717/732 co-relation queries the response was YES. [2024-06-28 01:59:28,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10510 conditions, 4662 events. 3164/4662 cut-off events. For 717/732 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25803 event pairs, 1227 based on Foata normal form. 13/4444 useless extension candidates. Maximal degree in co-relation 10498. Up to 4360 conditions per place. [2024-06-28 01:59:28,652 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 57 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-06-28 01:59:28,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 367 flow [2024-06-28 01:59:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:59:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:59:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-06-28 01:59:28,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7180851063829787 [2024-06-28 01:59:28,657 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 135 transitions. [2024-06-28 01:59:28,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 367 flow [2024-06-28 01:59:28,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:28,660 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 219 flow [2024-06-28 01:59:28,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-06-28 01:59:28,661 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-06-28 01:59:28,661 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 219 flow [2024-06-28 01:59:28,662 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 01:59:28,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:28,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:28,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:59:28,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:28,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1822895174, now seen corresponding path program 1 times [2024-06-28 01:59:28,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:28,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110083201] [2024-06-28 01:59:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:28,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:28,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110083201] [2024-06-28 01:59:28,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110083201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:28,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:28,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:59:28,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155035602] [2024-06-28 01:59:28,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:28,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:59:28,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:28,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:59:28,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:59:28,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-28 01:59:28,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 219 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 01:59:28,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:28,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-28 01:59:28,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:29,027 INFO L124 PetriNetUnfolderBase]: 1155/2292 cut-off events. [2024-06-28 01:59:29,028 INFO L125 PetriNetUnfolderBase]: For 773/860 co-relation queries the response was YES. [2024-06-28 01:59:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 2292 events. 1155/2292 cut-off events. For 773/860 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16081 event pairs, 485 based on Foata normal form. 7/2123 useless extension candidates. Maximal degree in co-relation 4840. Up to 1435 conditions per place. [2024-06-28 01:59:29,043 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 30 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-06-28 01:59:29,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 288 flow [2024-06-28 01:59:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:59:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:59:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-28 01:59:29,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-28 01:59:29,046 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 219 flow. Second operand 3 states and 108 transitions. [2024-06-28 01:59:29,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 288 flow [2024-06-28 01:59:29,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 284 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:59:29,050 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 198 flow [2024-06-28 01:59:29,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 01:59:29,051 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-06-28 01:59:29,052 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 198 flow [2024-06-28 01:59:29,052 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 01:59:29,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:29,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:29,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:59:29,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:29,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 544364297, now seen corresponding path program 1 times [2024-06-28 01:59:29,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:29,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734268904] [2024-06-28 01:59:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:29,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734268904] [2024-06-28 01:59:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734268904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:29,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:29,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:59:29,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845723686] [2024-06-28 01:59:29,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:29,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:59:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:59:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:59:29,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:59:29,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 198 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 01:59:29,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:29,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:59:29,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:30,231 INFO L124 PetriNetUnfolderBase]: 3056/4867 cut-off events. [2024-06-28 01:59:30,231 INFO L125 PetriNetUnfolderBase]: For 3181/3194 co-relation queries the response was YES. [2024-06-28 01:59:30,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12169 conditions, 4867 events. 3056/4867 cut-off events. For 3181/3194 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 29522 event pairs, 1931 based on Foata normal form. 8/4746 useless extension candidates. Maximal degree in co-relation 12151. Up to 4395 conditions per place. [2024-06-28 01:59:30,259 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 56 selfloop transitions, 9 changer transitions 2/78 dead transitions. [2024-06-28 01:59:30,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 411 flow [2024-06-28 01:59:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:59:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:59:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-28 01:59:30,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-28 01:59:30,262 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 198 flow. Second operand 5 states and 128 transitions. [2024-06-28 01:59:30,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 411 flow [2024-06-28 01:59:30,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:30,267 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 266 flow [2024-06-28 01:59:30,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-28 01:59:30,268 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-28 01:59:30,268 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 266 flow [2024-06-28 01:59:30,269 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 01:59:30,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:30,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:30,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:59:30,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:30,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2057416402, now seen corresponding path program 1 times [2024-06-28 01:59:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098938241] [2024-06-28 01:59:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:31,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098938241] [2024-06-28 01:59:31,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098938241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:31,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:31,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:59:31,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283862024] [2024-06-28 01:59:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:59:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:59:31,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:59:31,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:59:31,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 266 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 01:59:31,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:31,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:59:31,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:31,711 INFO L124 PetriNetUnfolderBase]: 2408/4036 cut-off events. [2024-06-28 01:59:31,711 INFO L125 PetriNetUnfolderBase]: For 3647/3674 co-relation queries the response was YES. [2024-06-28 01:59:31,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 4036 events. 2408/4036 cut-off events. For 3647/3674 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 25017 event pairs, 781 based on Foata normal form. 28/3914 useless extension candidates. Maximal degree in co-relation 10674. Up to 3160 conditions per place. [2024-06-28 01:59:31,729 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 79 selfloop transitions, 19 changer transitions 0/111 dead transitions. [2024-06-28 01:59:31,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 614 flow [2024-06-28 01:59:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-28 01:59:31,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:59:31,731 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 266 flow. Second operand 6 states and 188 transitions. [2024-06-28 01:59:31,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 614 flow [2024-06-28 01:59:31,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 597 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:31,734 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 334 flow [2024-06-28 01:59:31,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-28 01:59:31,735 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-06-28 01:59:31,735 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 334 flow [2024-06-28 01:59:31,735 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 01:59:31,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:31,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:31,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:59:31,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:31,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash -342111119, now seen corresponding path program 1 times [2024-06-28 01:59:31,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:31,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400878539] [2024-06-28 01:59:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:31,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400878539] [2024-06-28 01:59:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400878539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:59:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178246881] [2024-06-28 01:59:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:59:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:32,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:59:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:59:32,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:32,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 334 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 01:59:32,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:32,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:32,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:32,895 INFO L124 PetriNetUnfolderBase]: 3319/5363 cut-off events. [2024-06-28 01:59:32,895 INFO L125 PetriNetUnfolderBase]: For 7068/7068 co-relation queries the response was YES. [2024-06-28 01:59:32,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15270 conditions, 5363 events. 3319/5363 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 33468 event pairs, 1518 based on Foata normal form. 2/5234 useless extension candidates. Maximal degree in co-relation 15247. Up to 4757 conditions per place. [2024-06-28 01:59:32,922 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 77 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-06-28 01:59:32,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 628 flow [2024-06-28 01:59:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:59:32,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 01:59:32,923 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 334 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:59:32,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 628 flow [2024-06-28 01:59:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 584 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:32,929 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 401 flow [2024-06-28 01:59:32,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=401, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-28 01:59:32,932 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-06-28 01:59:32,932 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 401 flow [2024-06-28 01:59:32,932 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 01:59:32,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:32,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:32,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:59:32,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:32,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2022214468, now seen corresponding path program 1 times [2024-06-28 01:59:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:32,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899825779] [2024-06-28 01:59:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:32,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:33,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:33,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899825779] [2024-06-28 01:59:33,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899825779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:33,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:33,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:59:33,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308245652] [2024-06-28 01:59:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:33,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:59:33,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:59:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:59:33,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:59:33,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 401 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 01:59:33,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:33,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:59:33,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:34,174 INFO L124 PetriNetUnfolderBase]: 3368/5705 cut-off events. [2024-06-28 01:59:34,174 INFO L125 PetriNetUnfolderBase]: For 9899/9927 co-relation queries the response was YES. [2024-06-28 01:59:34,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 5705 events. 3368/5705 cut-off events. For 9899/9927 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 37590 event pairs, 1367 based on Foata normal form. 19/5517 useless extension candidates. Maximal degree in co-relation 16707. Up to 4706 conditions per place. [2024-06-28 01:59:34,203 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 80 selfloop transitions, 26 changer transitions 0/120 dead transitions. [2024-06-28 01:59:34,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 120 transitions, 800 flow [2024-06-28 01:59:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:59:34,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:59:34,205 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 401 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:59:34,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 120 transitions, 800 flow [2024-06-28 01:59:34,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 792 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:34,213 INFO L231 Difference]: Finished difference. Result has 79 places, 93 transitions, 616 flow [2024-06-28 01:59:34,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=616, PETRI_PLACES=79, PETRI_TRANSITIONS=93} [2024-06-28 01:59:34,214 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-06-28 01:59:34,214 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 93 transitions, 616 flow [2024-06-28 01:59:34,214 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 01:59:34,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:34,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:59:34,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:34,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1386560260, now seen corresponding path program 2 times [2024-06-28 01:59:34,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:34,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834005516] [2024-06-28 01:59:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834005516] [2024-06-28 01:59:34,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834005516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:34,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:34,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:59:34,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405348551] [2024-06-28 01:59:34,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:34,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:59:34,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:34,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:59:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:59:34,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:59:34,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 93 transitions, 616 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 01:59:34,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:34,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:59:34,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:35,517 INFO L124 PetriNetUnfolderBase]: 3461/5868 cut-off events. [2024-06-28 01:59:35,518 INFO L125 PetriNetUnfolderBase]: For 15497/15598 co-relation queries the response was YES. [2024-06-28 01:59:35,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20150 conditions, 5868 events. 3461/5868 cut-off events. For 15497/15598 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38848 event pairs, 1581 based on Foata normal form. 43/5702 useless extension candidates. Maximal degree in co-relation 20117. Up to 4824 conditions per place. [2024-06-28 01:59:35,554 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 89 selfloop transitions, 39 changer transitions 0/142 dead transitions. [2024-06-28 01:59:35,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 142 transitions, 1101 flow [2024-06-28 01:59:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 01:59:35,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2024-06-28 01:59:35,556 INFO L175 Difference]: Start difference. First operand has 79 places, 93 transitions, 616 flow. Second operand 7 states and 185 transitions. [2024-06-28 01:59:35,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 142 transitions, 1101 flow [2024-06-28 01:59:35,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 142 transitions, 1067 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:35,568 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 845 flow [2024-06-28 01:59:35,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=87, PETRI_TRANSITIONS=110} [2024-06-28 01:59:35,568 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2024-06-28 01:59:35,568 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 845 flow [2024-06-28 01:59:35,569 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 01:59:35,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:35,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:59:35,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash -851882008, now seen corresponding path program 3 times [2024-06-28 01:59:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890375123] [2024-06-28 01:59:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:36,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890375123] [2024-06-28 01:59:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890375123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:36,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:36,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:59:36,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093411838] [2024-06-28 01:59:36,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:36,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:59:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:59:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:59:36,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:59:36,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 845 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 01:59:36,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:36,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:59:36,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:37,122 INFO L124 PetriNetUnfolderBase]: 3754/6243 cut-off events. [2024-06-28 01:59:37,122 INFO L125 PetriNetUnfolderBase]: For 20849/20945 co-relation queries the response was YES. [2024-06-28 01:59:37,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23421 conditions, 6243 events. 3754/6243 cut-off events. For 20849/20945 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 40743 event pairs, 1280 based on Foata normal form. 61/6075 useless extension candidates. Maximal degree in co-relation 23383. Up to 4834 conditions per place. [2024-06-28 01:59:37,174 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 92 selfloop transitions, 42 changer transitions 0/148 dead transitions. [2024-06-28 01:59:37,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 148 transitions, 1317 flow [2024-06-28 01:59:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 01:59:37,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709219858156028 [2024-06-28 01:59:37,176 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 845 flow. Second operand 6 states and 161 transitions. [2024-06-28 01:59:37,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 148 transitions, 1317 flow [2024-06-28 01:59:37,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 148 transitions, 1273 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:37,199 INFO L231 Difference]: Finished difference. Result has 92 places, 118 transitions, 997 flow [2024-06-28 01:59:37,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=997, PETRI_PLACES=92, PETRI_TRANSITIONS=118} [2024-06-28 01:59:37,200 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-28 01:59:37,200 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 997 flow [2024-06-28 01:59:37,200 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 01:59:37,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:37,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:59:37,202 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:37,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -851872088, now seen corresponding path program 1 times [2024-06-28 01:59:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:37,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688990604] [2024-06-28 01:59:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688990604] [2024-06-28 01:59:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688990604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:37,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:37,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:37,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955158360] [2024-06-28 01:59:37,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:37,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:37,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:38,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:38,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 997 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 01:59:38,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:38,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:38,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:38,879 INFO L124 PetriNetUnfolderBase]: 3937/6489 cut-off events. [2024-06-28 01:59:38,880 INFO L125 PetriNetUnfolderBase]: For 25685/25685 co-relation queries the response was YES. [2024-06-28 01:59:38,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25552 conditions, 6489 events. 3937/6489 cut-off events. For 25685/25685 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 42020 event pairs, 1759 based on Foata normal form. 2/6305 useless extension candidates. Maximal degree in co-relation 25511. Up to 5575 conditions per place. [2024-06-28 01:59:38,922 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 128 selfloop transitions, 25 changer transitions 0/163 dead transitions. [2024-06-28 01:59:38,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 163 transitions, 1501 flow [2024-06-28 01:59:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:59:38,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-28 01:59:38,924 INFO L175 Difference]: Start difference. First operand has 92 places, 118 transitions, 997 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:59:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 163 transitions, 1501 flow [2024-06-28 01:59:38,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 163 transitions, 1444 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:38,948 INFO L231 Difference]: Finished difference. Result has 101 places, 130 transitions, 1121 flow [2024-06-28 01:59:38,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1121, PETRI_PLACES=101, PETRI_TRANSITIONS=130} [2024-06-28 01:59:38,949 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-06-28 01:59:38,949 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 130 transitions, 1121 flow [2024-06-28 01:59:38,949 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 01:59:38,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:38,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:38,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:59:38,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:38,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:38,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1735862450, now seen corresponding path program 1 times [2024-06-28 01:59:38,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:38,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483926161] [2024-06-28 01:59:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:38,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:39,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483926161] [2024-06-28 01:59:39,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483926161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:39,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:39,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:39,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342753373] [2024-06-28 01:59:39,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:39,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:39,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:39,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 130 transitions, 1121 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 01:59:39,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:39,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:39,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:40,323 INFO L124 PetriNetUnfolderBase]: 3983/6482 cut-off events. [2024-06-28 01:59:40,324 INFO L125 PetriNetUnfolderBase]: For 28456/28456 co-relation queries the response was YES. [2024-06-28 01:59:40,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26785 conditions, 6482 events. 3983/6482 cut-off events. For 28456/28456 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 41468 event pairs, 1326 based on Foata normal form. 4/6316 useless extension candidates. Maximal degree in co-relation 26739. Up to 5505 conditions per place. [2024-06-28 01:59:40,370 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 147 selfloop transitions, 28 changer transitions 0/185 dead transitions. [2024-06-28 01:59:40,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 185 transitions, 1787 flow [2024-06-28 01:59:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:59:40,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:59:40,372 INFO L175 Difference]: Start difference. First operand has 101 places, 130 transitions, 1121 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:59:40,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 185 transitions, 1787 flow [2024-06-28 01:59:40,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 1735 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:40,409 INFO L231 Difference]: Finished difference. Result has 108 places, 150 transitions, 1388 flow [2024-06-28 01:59:40,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1388, PETRI_PLACES=108, PETRI_TRANSITIONS=150} [2024-06-28 01:59:40,410 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-06-28 01:59:40,410 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 150 transitions, 1388 flow [2024-06-28 01:59:40,410 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 01:59:40,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:40,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:40,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:59:40,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:40,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:40,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1741463840, now seen corresponding path program 2 times [2024-06-28 01:59:40,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:40,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419498156] [2024-06-28 01:59:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:40,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419498156] [2024-06-28 01:59:41,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419498156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:41,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:41,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:41,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95961689] [2024-06-28 01:59:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:41,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:41,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:41,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:41,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 150 transitions, 1388 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 01:59:41,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:41,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:41,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:41,895 INFO L124 PetriNetUnfolderBase]: 4062/6667 cut-off events. [2024-06-28 01:59:41,895 INFO L125 PetriNetUnfolderBase]: For 32747/32747 co-relation queries the response was YES. [2024-06-28 01:59:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28512 conditions, 6667 events. 4062/6667 cut-off events. For 32747/32747 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42660 event pairs, 1177 based on Foata normal form. 4/6444 useless extension candidates. Maximal degree in co-relation 28462. Up to 5466 conditions per place. [2024-06-28 01:59:42,011 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 147 selfloop transitions, 40 changer transitions 0/197 dead transitions. [2024-06-28 01:59:42,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 2006 flow [2024-06-28 01:59:42,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:59:42,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-28 01:59:42,019 INFO L175 Difference]: Start difference. First operand has 108 places, 150 transitions, 1388 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:59:42,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 2006 flow [2024-06-28 01:59:42,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 197 transitions, 1980 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:42,048 INFO L231 Difference]: Finished difference. Result has 114 places, 159 transitions, 1544 flow [2024-06-28 01:59:42,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1544, PETRI_PLACES=114, PETRI_TRANSITIONS=159} [2024-06-28 01:59:42,048 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 61 predicate places. [2024-06-28 01:59:42,049 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 159 transitions, 1544 flow [2024-06-28 01:59:42,049 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 01:59:42,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:42,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:42,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:59:42,049 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:42,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash -638536954, now seen corresponding path program 3 times [2024-06-28 01:59:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606675339] [2024-06-28 01:59:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:42,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606675339] [2024-06-28 01:59:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606675339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:42,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:42,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:42,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099056323] [2024-06-28 01:59:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:42,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:42,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:42,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 159 transitions, 1544 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 01:59:42,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:42,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:42,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:43,616 INFO L124 PetriNetUnfolderBase]: 4052/6646 cut-off events. [2024-06-28 01:59:43,617 INFO L125 PetriNetUnfolderBase]: For 37639/37639 co-relation queries the response was YES. [2024-06-28 01:59:43,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29736 conditions, 6646 events. 4052/6646 cut-off events. For 37639/37639 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 42458 event pairs, 1188 based on Foata normal form. 4/6427 useless extension candidates. Maximal degree in co-relation 29683. Up to 5458 conditions per place. [2024-06-28 01:59:43,666 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 146 selfloop transitions, 39 changer transitions 0/195 dead transitions. [2024-06-28 01:59:43,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 195 transitions, 2046 flow [2024-06-28 01:59:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:59:43,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 01:59:43,667 INFO L175 Difference]: Start difference. First operand has 114 places, 159 transitions, 1544 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:59:43,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 195 transitions, 2046 flow [2024-06-28 01:59:43,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 195 transitions, 1999 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:43,703 INFO L231 Difference]: Finished difference. Result has 120 places, 159 transitions, 1583 flow [2024-06-28 01:59:43,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1583, PETRI_PLACES=120, PETRI_TRANSITIONS=159} [2024-06-28 01:59:43,703 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2024-06-28 01:59:43,704 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 159 transitions, 1583 flow [2024-06-28 01:59:43,704 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 01:59:43,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:43,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:43,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:59:43,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:43,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash -638229372, now seen corresponding path program 1 times [2024-06-28 01:59:43,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:43,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090012200] [2024-06-28 01:59:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:43,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:44,532 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 01:59:44,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:44,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090012200] [2024-06-28 01:59:44,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090012200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:44,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:44,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:44,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116776694] [2024-06-28 01:59:44,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:44,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:44,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:44,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 159 transitions, 1583 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 01:59:44,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:44,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:45,654 INFO L124 PetriNetUnfolderBase]: 4044/6656 cut-off events. [2024-06-28 01:59:45,654 INFO L125 PetriNetUnfolderBase]: For 39647/39647 co-relation queries the response was YES. [2024-06-28 01:59:45,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29890 conditions, 6656 events. 4044/6656 cut-off events. For 39647/39647 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42962 event pairs, 1510 based on Foata normal form. 4/6473 useless extension candidates. Maximal degree in co-relation 29835. Up to 5689 conditions per place. [2024-06-28 01:59:45,704 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 167 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-28 01:59:45,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 203 transitions, 2129 flow [2024-06-28 01:59:45,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:59:45,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-28 01:59:45,706 INFO L175 Difference]: Start difference. First operand has 120 places, 159 transitions, 1583 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:59:45,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 203 transitions, 2129 flow [2024-06-28 01:59:45,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 203 transitions, 2029 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:45,754 INFO L231 Difference]: Finished difference. Result has 122 places, 161 transitions, 1566 flow [2024-06-28 01:59:45,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1566, PETRI_PLACES=122, PETRI_TRANSITIONS=161} [2024-06-28 01:59:45,755 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 69 predicate places. [2024-06-28 01:59:45,755 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 161 transitions, 1566 flow [2024-06-28 01:59:45,755 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 01:59:45,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:45,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:45,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:59:45,756 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:45,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2023052675, now seen corresponding path program 1 times [2024-06-28 01:59:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280489928] [2024-06-28 01:59:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:45,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:46,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:46,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280489928] [2024-06-28 01:59:46,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280489928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:46,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:46,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433289254] [2024-06-28 01:59:46,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:46,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:46,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:46,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:46,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:46,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:59:46,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 161 transitions, 1566 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:46,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:46,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:59:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:47,333 INFO L124 PetriNetUnfolderBase]: 3887/6267 cut-off events. [2024-06-28 01:59:47,334 INFO L125 PetriNetUnfolderBase]: For 47953/48032 co-relation queries the response was YES. [2024-06-28 01:59:47,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29557 conditions, 6267 events. 3887/6267 cut-off events. For 47953/48032 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 40177 event pairs, 1376 based on Foata normal form. 40/6009 useless extension candidates. Maximal degree in co-relation 29502. Up to 5290 conditions per place. [2024-06-28 01:59:47,386 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 134 selfloop transitions, 50 changer transitions 0/209 dead transitions. [2024-06-28 01:59:47,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 209 transitions, 2182 flow [2024-06-28 01:59:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 01:59:47,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-06-28 01:59:47,387 INFO L175 Difference]: Start difference. First operand has 122 places, 161 transitions, 1566 flow. Second operand 7 states and 187 transitions. [2024-06-28 01:59:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 209 transitions, 2182 flow [2024-06-28 01:59:47,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 209 transitions, 2117 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:47,430 INFO L231 Difference]: Finished difference. Result has 125 places, 174 transitions, 1778 flow [2024-06-28 01:59:47,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1778, PETRI_PLACES=125, PETRI_TRANSITIONS=174} [2024-06-28 01:59:47,430 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-28 01:59:47,430 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 174 transitions, 1778 flow [2024-06-28 01:59:47,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:47,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:47,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:47,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:59:47,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:47,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:47,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2022837349, now seen corresponding path program 1 times [2024-06-28 01:59:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:47,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258358025] [2024-06-28 01:59:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:47,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258358025] [2024-06-28 01:59:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258358025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:48,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:48,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999597697] [2024-06-28 01:59:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:48,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:48,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:48,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:48,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 174 transitions, 1778 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 01:59:48,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:48,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:48,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:49,349 INFO L124 PetriNetUnfolderBase]: 4130/6686 cut-off events. [2024-06-28 01:59:49,349 INFO L125 PetriNetUnfolderBase]: For 52275/52275 co-relation queries the response was YES. [2024-06-28 01:59:49,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32650 conditions, 6686 events. 4130/6686 cut-off events. For 52275/52275 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 42683 event pairs, 1102 based on Foata normal form. 4/6523 useless extension candidates. Maximal degree in co-relation 32592. Up to 5674 conditions per place. [2024-06-28 01:59:49,402 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 179 selfloop transitions, 32 changer transitions 0/221 dead transitions. [2024-06-28 01:59:49,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 221 transitions, 2396 flow [2024-06-28 01:59:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:59:49,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:59:49,403 INFO L175 Difference]: Start difference. First operand has 125 places, 174 transitions, 1778 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:59:49,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 221 transitions, 2396 flow [2024-06-28 01:59:49,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 221 transitions, 2279 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:49,456 INFO L231 Difference]: Finished difference. Result has 130 places, 178 transitions, 1776 flow [2024-06-28 01:59:49,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1776, PETRI_PLACES=130, PETRI_TRANSITIONS=178} [2024-06-28 01:59:49,457 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-28 01:59:49,457 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 178 transitions, 1776 flow [2024-06-28 01:59:49,457 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 01:59:49,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:49,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:49,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:59:49,457 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:49,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1689715655, now seen corresponding path program 2 times [2024-06-28 01:59:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:49,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212169276] [2024-06-28 01:59:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:50,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212169276] [2024-06-28 01:59:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212169276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:50,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:50,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:50,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725240614] [2024-06-28 01:59:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:50,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:50,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:50,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:50,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 178 transitions, 1776 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 01:59:50,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:50,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:50,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:51,433 INFO L124 PetriNetUnfolderBase]: 4214/6865 cut-off events. [2024-06-28 01:59:51,433 INFO L125 PetriNetUnfolderBase]: For 57696/57696 co-relation queries the response was YES. [2024-06-28 01:59:51,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34238 conditions, 6865 events. 4214/6865 cut-off events. For 57696/57696 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 43645 event pairs, 940 based on Foata normal form. 4/6649 useless extension candidates. Maximal degree in co-relation 34178. Up to 5550 conditions per place. [2024-06-28 01:59:51,480 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 178 selfloop transitions, 55 changer transitions 0/243 dead transitions. [2024-06-28 01:59:51,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 243 transitions, 2621 flow [2024-06-28 01:59:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:59:51,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 01:59:51,481 INFO L175 Difference]: Start difference. First operand has 130 places, 178 transitions, 1776 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:59:51,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 243 transitions, 2621 flow [2024-06-28 01:59:51,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 243 transitions, 2538 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:51,528 INFO L231 Difference]: Finished difference. Result has 134 places, 189 transitions, 1944 flow [2024-06-28 01:59:51,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=134, PETRI_TRANSITIONS=189} [2024-06-28 01:59:51,529 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-06-28 01:59:51,529 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 189 transitions, 1944 flow [2024-06-28 01:59:51,529 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 01:59:51,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:51,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:51,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:59:51,529 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:51,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash 117051355, now seen corresponding path program 3 times [2024-06-28 01:59:51,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:51,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69592125] [2024-06-28 01:59:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:52,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69592125] [2024-06-28 01:59:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69592125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:52,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:52,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:52,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253289516] [2024-06-28 01:59:52,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:52,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:52,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:52,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 189 transitions, 1944 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 01:59:52,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:52,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:52,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:53,337 INFO L124 PetriNetUnfolderBase]: 4229/6453 cut-off events. [2024-06-28 01:59:53,337 INFO L125 PetriNetUnfolderBase]: For 64761/64761 co-relation queries the response was YES. [2024-06-28 01:59:53,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35743 conditions, 6453 events. 4229/6453 cut-off events. For 64761/64761 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 38109 event pairs, 819 based on Foata normal form. 2/6390 useless extension candidates. Maximal degree in co-relation 35681. Up to 5803 conditions per place. [2024-06-28 01:59:53,388 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 200 selfloop transitions, 52 changer transitions 0/262 dead transitions. [2024-06-28 01:59:53,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 262 transitions, 2950 flow [2024-06-28 01:59:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:59:53,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:59:53,391 INFO L175 Difference]: Start difference. First operand has 134 places, 189 transitions, 1944 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:59:53,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 262 transitions, 2950 flow [2024-06-28 01:59:53,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 262 transitions, 2839 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:53,457 INFO L231 Difference]: Finished difference. Result has 141 places, 216 transitions, 2323 flow [2024-06-28 01:59:53,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2323, PETRI_PLACES=141, PETRI_TRANSITIONS=216} [2024-06-28 01:59:53,458 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-06-28 01:59:53,458 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 216 transitions, 2323 flow [2024-06-28 01:59:53,458 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 01:59:53,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:53,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:53,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:59:53,458 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:53,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash -481453091, now seen corresponding path program 1 times [2024-06-28 01:59:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128925387] [2024-06-28 01:59:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:53,910 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 01:59:53,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:53,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128925387] [2024-06-28 01:59:53,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128925387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:53,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:53,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:59:53,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779907125] [2024-06-28 01:59:53,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:53,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:59:53,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:59:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:59:53,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:53,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 216 transitions, 2323 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:53,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:53,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:53,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:54,906 INFO L124 PetriNetUnfolderBase]: 4178/6803 cut-off events. [2024-06-28 01:59:54,906 INFO L125 PetriNetUnfolderBase]: For 72611/72611 co-relation queries the response was YES. [2024-06-28 01:59:54,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37281 conditions, 6803 events. 4178/6803 cut-off events. For 72611/72611 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 43925 event pairs, 1126 based on Foata normal form. 6/6628 useless extension candidates. Maximal degree in co-relation 37213. Up to 5671 conditions per place. [2024-06-28 01:59:54,969 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 190 selfloop transitions, 36 changer transitions 0/236 dead transitions. [2024-06-28 01:59:54,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 236 transitions, 2887 flow [2024-06-28 01:59:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:59:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:59:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-28 01:59:54,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-28 01:59:54,971 INFO L175 Difference]: Start difference. First operand has 141 places, 216 transitions, 2323 flow. Second operand 5 states and 126 transitions. [2024-06-28 01:59:54,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 236 transitions, 2887 flow [2024-06-28 01:59:55,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 236 transitions, 2787 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:55,072 INFO L231 Difference]: Finished difference. Result has 145 places, 216 transitions, 2313 flow [2024-06-28 01:59:55,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2313, PETRI_PLACES=145, PETRI_TRANSITIONS=216} [2024-06-28 01:59:55,072 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-28 01:59:55,073 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 216 transitions, 2313 flow [2024-06-28 01:59:55,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:55,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:55,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:59:55,073 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:55,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash 400278727, now seen corresponding path program 1 times [2024-06-28 01:59:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967848743] [2024-06-28 01:59:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:55,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967848743] [2024-06-28 01:59:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967848743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:55,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:55,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:55,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576321805] [2024-06-28 01:59:55,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:55,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:55,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:55,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:55,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:55,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 216 transitions, 2313 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 01:59:55,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:55,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:55,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:57,060 INFO L124 PetriNetUnfolderBase]: 4178/6785 cut-off events. [2024-06-28 01:59:57,061 INFO L125 PetriNetUnfolderBase]: For 72742/72742 co-relation queries the response was YES. [2024-06-28 01:59:57,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37102 conditions, 6785 events. 4178/6785 cut-off events. For 72742/72742 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 43553 event pairs, 1100 based on Foata normal form. 2/6616 useless extension candidates. Maximal degree in co-relation 37031. Up to 5868 conditions per place. [2024-06-28 01:59:57,129 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 230 selfloop transitions, 28 changer transitions 0/268 dead transitions. [2024-06-28 01:59:57,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 268 transitions, 3083 flow [2024-06-28 01:59:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:59:57,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:59:57,130 INFO L175 Difference]: Start difference. First operand has 145 places, 216 transitions, 2313 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:59:57,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 268 transitions, 3083 flow [2024-06-28 01:59:57,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 268 transitions, 3020 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:57,228 INFO L231 Difference]: Finished difference. Result has 152 places, 226 transitions, 2450 flow [2024-06-28 01:59:57,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2450, PETRI_PLACES=152, PETRI_TRANSITIONS=226} [2024-06-28 01:59:57,228 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-06-28 01:59:57,228 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 226 transitions, 2450 flow [2024-06-28 01:59:57,229 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 01:59:57,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:57,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:59:57,229 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:57,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1716553201, now seen corresponding path program 1 times [2024-06-28 01:59:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959245969] [2024-06-28 01:59:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:58,146 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 01:59:58,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:58,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959245969] [2024-06-28 01:59:58,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959245969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:58,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:58,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:58,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111834072] [2024-06-28 01:59:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:58,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:58,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:59:58,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 226 transitions, 2450 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:58,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:58,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:59:58,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:59,473 INFO L124 PetriNetUnfolderBase]: 4382/7091 cut-off events. [2024-06-28 01:59:59,474 INFO L125 PetriNetUnfolderBase]: For 86498/86498 co-relation queries the response was YES. [2024-06-28 01:59:59,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39520 conditions, 7091 events. 4382/7091 cut-off events. For 86498/86498 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 45791 event pairs, 1046 based on Foata normal form. 24/6946 useless extension candidates. Maximal degree in co-relation 39446. Up to 5789 conditions per place. [2024-06-28 01:59:59,548 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 237 selfloop transitions, 37 changer transitions 0/284 dead transitions. [2024-06-28 01:59:59,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 284 transitions, 3272 flow [2024-06-28 01:59:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:59:59,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-28 01:59:59,549 INFO L175 Difference]: Start difference. First operand has 152 places, 226 transitions, 2450 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:59:59,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 284 transitions, 3272 flow [2024-06-28 01:59:59,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 284 transitions, 3200 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:59,669 INFO L231 Difference]: Finished difference. Result has 159 places, 228 transitions, 2495 flow [2024-06-28 01:59:59,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2495, PETRI_PLACES=159, PETRI_TRANSITIONS=228} [2024-06-28 01:59:59,670 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2024-06-28 01:59:59,670 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 228 transitions, 2495 flow [2024-06-28 01:59:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:59,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:59,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:59,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:59:59,670 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:59,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:59,670 INFO L85 PathProgramCache]: Analyzing trace with hash 841935523, now seen corresponding path program 2 times [2024-06-28 01:59:59,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:59,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773622388] [2024-06-28 01:59:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:00,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:00,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773622388] [2024-06-28 02:00:00,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773622388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:00,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:00,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:00,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989871578] [2024-06-28 02:00:00,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:00,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:00,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:00,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:00,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:00,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:00,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 228 transitions, 2495 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:00,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:00,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:00,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:01,849 INFO L124 PetriNetUnfolderBase]: 4638/7537 cut-off events. [2024-06-28 02:00:01,849 INFO L125 PetriNetUnfolderBase]: For 96706/96706 co-relation queries the response was YES. [2024-06-28 02:00:01,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42941 conditions, 7537 events. 4638/7537 cut-off events. For 96706/96706 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 48648 event pairs, 823 based on Foata normal form. 4/7329 useless extension candidates. Maximal degree in co-relation 42865. Up to 5515 conditions per place. [2024-06-28 02:00:01,929 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 216 selfloop transitions, 72 changer transitions 0/298 dead transitions. [2024-06-28 02:00:01,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 298 transitions, 3586 flow [2024-06-28 02:00:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 02:00:01,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 02:00:01,930 INFO L175 Difference]: Start difference. First operand has 159 places, 228 transitions, 2495 flow. Second operand 9 states and 233 transitions. [2024-06-28 02:00:01,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 298 transitions, 3586 flow [2024-06-28 02:00:02,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 298 transitions, 3503 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:02,075 INFO L231 Difference]: Finished difference. Result has 162 places, 234 transitions, 2664 flow [2024-06-28 02:00:02,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2664, PETRI_PLACES=162, PETRI_TRANSITIONS=234} [2024-06-28 02:00:02,075 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 109 predicate places. [2024-06-28 02:00:02,075 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 234 transitions, 2664 flow [2024-06-28 02:00:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:02,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:02,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:02,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:00:02,076 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:02,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 841579333, now seen corresponding path program 3 times [2024-06-28 02:00:02,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071938707] [2024-06-28 02:00:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071938707] [2024-06-28 02:00:03,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071938707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:03,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:03,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:03,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329057704] [2024-06-28 02:00:03,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:03,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:03,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:03,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:03,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 234 transitions, 2664 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:03,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:03,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:03,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:04,505 INFO L124 PetriNetUnfolderBase]: 4842/7735 cut-off events. [2024-06-28 02:00:04,505 INFO L125 PetriNetUnfolderBase]: For 110836/110836 co-relation queries the response was YES. [2024-06-28 02:00:04,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45788 conditions, 7735 events. 4842/7735 cut-off events. For 110836/110836 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 49901 event pairs, 1098 based on Foata normal form. 24/7579 useless extension candidates. Maximal degree in co-relation 45710. Up to 6254 conditions per place. [2024-06-28 02:00:04,594 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 227 selfloop transitions, 68 changer transitions 0/305 dead transitions. [2024-06-28 02:00:04,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 305 transitions, 3685 flow [2024-06-28 02:00:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:00:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:00:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 02:00:04,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-28 02:00:04,596 INFO L175 Difference]: Start difference. First operand has 162 places, 234 transitions, 2664 flow. Second operand 10 states and 256 transitions. [2024-06-28 02:00:04,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 305 transitions, 3685 flow [2024-06-28 02:00:04,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 305 transitions, 3559 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:04,801 INFO L231 Difference]: Finished difference. Result has 167 places, 236 transitions, 2727 flow [2024-06-28 02:00:04,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2727, PETRI_PLACES=167, PETRI_TRANSITIONS=236} [2024-06-28 02:00:04,802 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 114 predicate places. [2024-06-28 02:00:04,802 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 236 transitions, 2727 flow [2024-06-28 02:00:04,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:04,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:04,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:04,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:00:04,802 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:04,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash -666373711, now seen corresponding path program 4 times [2024-06-28 02:00:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:04,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618932985] [2024-06-28 02:00:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:04,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:05,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:05,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618932985] [2024-06-28 02:00:05,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618932985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:05,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:05,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:05,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792768084] [2024-06-28 02:00:05,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:05,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:05,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:05,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:05,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:05,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:05,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 236 transitions, 2727 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:05,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:05,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:05,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:07,083 INFO L124 PetriNetUnfolderBase]: 4842/7399 cut-off events. [2024-06-28 02:00:07,083 INFO L125 PetriNetUnfolderBase]: For 106403/106403 co-relation queries the response was YES. [2024-06-28 02:00:07,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45650 conditions, 7399 events. 4842/7399 cut-off events. For 106403/106403 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 44900 event pairs, 850 based on Foata normal form. 4/7342 useless extension candidates. Maximal degree in co-relation 45570. Up to 6702 conditions per place. [2024-06-28 02:00:07,177 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 228 selfloop transitions, 56 changer transitions 0/294 dead transitions. [2024-06-28 02:00:07,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 294 transitions, 3615 flow [2024-06-28 02:00:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 02:00:07,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 02:00:07,178 INFO L175 Difference]: Start difference. First operand has 167 places, 236 transitions, 2727 flow. Second operand 9 states and 222 transitions. [2024-06-28 02:00:07,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 294 transitions, 3615 flow [2024-06-28 02:00:07,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 294 transitions, 3470 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:00:07,374 INFO L231 Difference]: Finished difference. Result has 168 places, 239 transitions, 2773 flow [2024-06-28 02:00:07,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2773, PETRI_PLACES=168, PETRI_TRANSITIONS=239} [2024-06-28 02:00:07,374 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-06-28 02:00:07,374 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 239 transitions, 2773 flow [2024-06-28 02:00:07,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:07,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:07,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:07,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:00:07,375 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:07,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:07,375 INFO L85 PathProgramCache]: Analyzing trace with hash -913139994, now seen corresponding path program 1 times [2024-06-28 02:00:07,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:07,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318308813] [2024-06-28 02:00:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:07,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:08,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318308813] [2024-06-28 02:00:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318308813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:08,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:08,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467410034] [2024-06-28 02:00:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:08,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:08,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 02:00:08,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 239 transitions, 2773 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:08,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:08,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 02:00:08,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:09,624 INFO L124 PetriNetUnfolderBase]: 4746/7843 cut-off events. [2024-06-28 02:00:09,624 INFO L125 PetriNetUnfolderBase]: For 123206/123399 co-relation queries the response was YES. [2024-06-28 02:00:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45939 conditions, 7843 events. 4746/7843 cut-off events. For 123206/123399 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 53479 event pairs, 1185 based on Foata normal form. 32/7555 useless extension candidates. Maximal degree in co-relation 45858. Up to 6167 conditions per place. [2024-06-28 02:00:09,713 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 181 selfloop transitions, 70 changer transitions 0/301 dead transitions. [2024-06-28 02:00:09,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 301 transitions, 3670 flow [2024-06-28 02:00:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 02:00:09,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-06-28 02:00:09,714 INFO L175 Difference]: Start difference. First operand has 168 places, 239 transitions, 2773 flow. Second operand 8 states and 213 transitions. [2024-06-28 02:00:09,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 301 transitions, 3670 flow [2024-06-28 02:00:09,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 301 transitions, 3510 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:09,887 INFO L231 Difference]: Finished difference. Result has 170 places, 254 transitions, 2979 flow [2024-06-28 02:00:09,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2979, PETRI_PLACES=170, PETRI_TRANSITIONS=254} [2024-06-28 02:00:09,887 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 117 predicate places. [2024-06-28 02:00:09,887 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 254 transitions, 2979 flow [2024-06-28 02:00:09,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:09,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:09,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:09,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:00:09,888 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:09,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1353492474, now seen corresponding path program 2 times [2024-06-28 02:00:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432147858] [2024-06-28 02:00:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:10,642 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 02:00:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:10,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432147858] [2024-06-28 02:00:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432147858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:10,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490938826] [2024-06-28 02:00:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:10,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 02:00:10,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 254 transitions, 2979 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:10,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:10,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 02:00:10,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:12,119 INFO L124 PetriNetUnfolderBase]: 4886/8093 cut-off events. [2024-06-28 02:00:12,119 INFO L125 PetriNetUnfolderBase]: For 138082/138321 co-relation queries the response was YES. [2024-06-28 02:00:12,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48406 conditions, 8093 events. 4886/8093 cut-off events. For 138082/138321 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 55307 event pairs, 1278 based on Foata normal form. 38/7785 useless extension candidates. Maximal degree in co-relation 48323. Up to 6518 conditions per place. [2024-06-28 02:00:12,223 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 199 selfloop transitions, 55 changer transitions 0/304 dead transitions. [2024-06-28 02:00:12,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 304 transitions, 3709 flow [2024-06-28 02:00:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 02:00:12,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-28 02:00:12,224 INFO L175 Difference]: Start difference. First operand has 170 places, 254 transitions, 2979 flow. Second operand 8 states and 212 transitions. [2024-06-28 02:00:12,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 304 transitions, 3709 flow [2024-06-28 02:00:12,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 304 transitions, 3589 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:12,552 INFO L231 Difference]: Finished difference. Result has 175 places, 260 transitions, 3064 flow [2024-06-28 02:00:12,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3064, PETRI_PLACES=175, PETRI_TRANSITIONS=260} [2024-06-28 02:00:12,553 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 122 predicate places. [2024-06-28 02:00:12,553 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 260 transitions, 3064 flow [2024-06-28 02:00:12,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:12,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:12,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:12,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:00:12,553 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:12,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1356379194, now seen corresponding path program 3 times [2024-06-28 02:00:12,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:12,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877471162] [2024-06-28 02:00:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:12,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:13,343 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 02:00:13,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:13,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877471162] [2024-06-28 02:00:13,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877471162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:13,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:13,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691936009] [2024-06-28 02:00:13,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:13,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:13,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:13,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 02:00:13,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 260 transitions, 3064 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:13,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:13,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 02:00:13,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:14,876 INFO L124 PetriNetUnfolderBase]: 5051/8354 cut-off events. [2024-06-28 02:00:14,877 INFO L125 PetriNetUnfolderBase]: For 151692/151941 co-relation queries the response was YES. [2024-06-28 02:00:14,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50796 conditions, 8354 events. 5051/8354 cut-off events. For 151692/151941 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 57458 event pairs, 1364 based on Foata normal form. 38/8040 useless extension candidates. Maximal degree in co-relation 50711. Up to 6739 conditions per place. [2024-06-28 02:00:14,958 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 202 selfloop transitions, 57 changer transitions 0/309 dead transitions. [2024-06-28 02:00:14,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 309 transitions, 3828 flow [2024-06-28 02:00:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 02:00:14,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-28 02:00:14,959 INFO L175 Difference]: Start difference. First operand has 175 places, 260 transitions, 3064 flow. Second operand 8 states and 215 transitions. [2024-06-28 02:00:14,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 309 transitions, 3828 flow [2024-06-28 02:00:15,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 309 transitions, 3683 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:15,168 INFO L231 Difference]: Finished difference. Result has 178 places, 262 transitions, 3088 flow [2024-06-28 02:00:15,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3088, PETRI_PLACES=178, PETRI_TRANSITIONS=262} [2024-06-28 02:00:15,169 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-06-28 02:00:15,169 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 262 transitions, 3088 flow [2024-06-28 02:00:15,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:15,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:15,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:15,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:00:15,170 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:15,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1673533370, now seen corresponding path program 1 times [2024-06-28 02:00:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:15,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101229178] [2024-06-28 02:00:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:16,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101229178] [2024-06-28 02:00:16,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101229178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:16,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:16,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442623905] [2024-06-28 02:00:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:16,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:16,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:16,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 262 transitions, 3088 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:16,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:16,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:16,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:17,718 INFO L124 PetriNetUnfolderBase]: 5439/8761 cut-off events. [2024-06-28 02:00:17,719 INFO L125 PetriNetUnfolderBase]: For 149981/149981 co-relation queries the response was YES. [2024-06-28 02:00:17,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53862 conditions, 8761 events. 5439/8761 cut-off events. For 149981/149981 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 58427 event pairs, 1488 based on Foata normal form. 2/8578 useless extension candidates. Maximal degree in co-relation 53776. Up to 7590 conditions per place. [2024-06-28 02:00:17,808 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 271 selfloop transitions, 45 changer transitions 0/326 dead transitions. [2024-06-28 02:00:17,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 326 transitions, 4037 flow [2024-06-28 02:00:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:00:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:00:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 02:00:17,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-28 02:00:17,810 INFO L175 Difference]: Start difference. First operand has 178 places, 262 transitions, 3088 flow. Second operand 10 states and 246 transitions. [2024-06-28 02:00:17,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 326 transitions, 4037 flow [2024-06-28 02:00:18,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 326 transitions, 3904 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:18,062 INFO L231 Difference]: Finished difference. Result has 183 places, 269 transitions, 3166 flow [2024-06-28 02:00:18,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3166, PETRI_PLACES=183, PETRI_TRANSITIONS=269} [2024-06-28 02:00:18,062 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-06-28 02:00:18,062 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 269 transitions, 3166 flow [2024-06-28 02:00:18,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:18,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:18,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:18,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:00:18,063 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:18,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1356385146, now seen corresponding path program 2 times [2024-06-28 02:00:18,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:18,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203868730] [2024-06-28 02:00:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:18,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:18,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:18,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203868730] [2024-06-28 02:00:18,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203868730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:18,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:18,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:18,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886918107] [2024-06-28 02:00:18,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:18,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:19,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:19,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 269 transitions, 3166 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:19,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:19,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:19,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:20,710 INFO L124 PetriNetUnfolderBase]: 5472/8818 cut-off events. [2024-06-28 02:00:20,710 INFO L125 PetriNetUnfolderBase]: For 157890/157890 co-relation queries the response was YES. [2024-06-28 02:00:20,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54758 conditions, 8818 events. 5472/8818 cut-off events. For 157890/157890 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 58884 event pairs, 1511 based on Foata normal form. 2/8634 useless extension candidates. Maximal degree in co-relation 54670. Up to 7766 conditions per place. [2024-06-28 02:00:20,818 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 283 selfloop transitions, 41 changer transitions 0/334 dead transitions. [2024-06-28 02:00:20,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 334 transitions, 4236 flow [2024-06-28 02:00:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 02:00:20,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 02:00:20,820 INFO L175 Difference]: Start difference. First operand has 183 places, 269 transitions, 3166 flow. Second operand 9 states and 224 transitions. [2024-06-28 02:00:20,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 334 transitions, 4236 flow [2024-06-28 02:00:21,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 334 transitions, 4098 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:21,151 INFO L231 Difference]: Finished difference. Result has 188 places, 281 transitions, 3392 flow [2024-06-28 02:00:21,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3392, PETRI_PLACES=188, PETRI_TRANSITIONS=281} [2024-06-28 02:00:21,152 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-06-28 02:00:21,153 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 281 transitions, 3392 flow [2024-06-28 02:00:21,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:21,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:21,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:21,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:00:21,155 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:21,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 809618618, now seen corresponding path program 4 times [2024-06-28 02:00:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:21,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511583085] [2024-06-28 02:00:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:21,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511583085] [2024-06-28 02:00:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511583085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562094484] [2024-06-28 02:00:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:22,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 02:00:22,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 281 transitions, 3392 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:22,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:22,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 02:00:22,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:23,629 INFO L124 PetriNetUnfolderBase]: 5243/8719 cut-off events. [2024-06-28 02:00:23,629 INFO L125 PetriNetUnfolderBase]: For 182251/182488 co-relation queries the response was YES. [2024-06-28 02:00:23,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54778 conditions, 8719 events. 5243/8719 cut-off events. For 182251/182488 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 60224 event pairs, 1086 based on Foata normal form. 35/8382 useless extension candidates. Maximal degree in co-relation 54686. Up to 6590 conditions per place. [2024-06-28 02:00:23,714 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 207 selfloop transitions, 75 changer transitions 0/338 dead transitions. [2024-06-28 02:00:23,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 338 transitions, 4379 flow [2024-06-28 02:00:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 02:00:23,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-28 02:00:23,715 INFO L175 Difference]: Start difference. First operand has 188 places, 281 transitions, 3392 flow. Second operand 8 states and 215 transitions. [2024-06-28 02:00:23,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 338 transitions, 4379 flow [2024-06-28 02:00:23,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 338 transitions, 4169 flow, removed 92 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:23,979 INFO L231 Difference]: Finished difference. Result has 194 places, 288 transitions, 3453 flow [2024-06-28 02:00:23,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3182, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3453, PETRI_PLACES=194, PETRI_TRANSITIONS=288} [2024-06-28 02:00:23,979 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-06-28 02:00:23,980 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 288 transitions, 3453 flow [2024-06-28 02:00:23,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:23,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:23,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:23,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:00:23,980 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:23,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash 319147238, now seen corresponding path program 3 times [2024-06-28 02:00:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:23,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502360619] [2024-06-28 02:00:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:23,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:24,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:24,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502360619] [2024-06-28 02:00:24,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502360619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:24,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294674726] [2024-06-28 02:00:24,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:24,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:25,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:25,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 288 transitions, 3453 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:25,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:25,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:25,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:26,840 INFO L124 PetriNetUnfolderBase]: 5644/9308 cut-off events. [2024-06-28 02:00:26,840 INFO L125 PetriNetUnfolderBase]: For 187377/187377 co-relation queries the response was YES. [2024-06-28 02:00:26,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59102 conditions, 9308 events. 5644/9308 cut-off events. For 187377/187377 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 63639 event pairs, 1407 based on Foata normal form. 2/9039 useless extension candidates. Maximal degree in co-relation 59008. Up to 7616 conditions per place. [2024-06-28 02:00:26,950 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 273 selfloop transitions, 80 changer transitions 0/363 dead transitions. [2024-06-28 02:00:26,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 363 transitions, 4689 flow [2024-06-28 02:00:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:00:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:00:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-28 02:00:26,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:00:26,951 INFO L175 Difference]: Start difference. First operand has 194 places, 288 transitions, 3453 flow. Second operand 11 states and 275 transitions. [2024-06-28 02:00:26,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 363 transitions, 4689 flow [2024-06-28 02:00:27,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 363 transitions, 4504 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:27,300 INFO L231 Difference]: Finished difference. Result has 201 places, 295 transitions, 3585 flow [2024-06-28 02:00:27,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3585, PETRI_PLACES=201, PETRI_TRANSITIONS=295} [2024-06-28 02:00:27,300 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-06-28 02:00:27,300 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 295 transitions, 3585 flow [2024-06-28 02:00:27,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:27,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:27,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:27,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:00:27,301 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:27,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash -242713370, now seen corresponding path program 4 times [2024-06-28 02:00:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959473196] [2024-06-28 02:00:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:27,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959473196] [2024-06-28 02:00:28,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959473196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:28,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031744773] [2024-06-28 02:00:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:28,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:28,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:28,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:28,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 295 transitions, 3585 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:28,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:28,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:28,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:30,081 INFO L124 PetriNetUnfolderBase]: 5639/9313 cut-off events. [2024-06-28 02:00:30,081 INFO L125 PetriNetUnfolderBase]: For 190150/190150 co-relation queries the response was YES. [2024-06-28 02:00:30,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59008 conditions, 9313 events. 5639/9313 cut-off events. For 190150/190150 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 63751 event pairs, 1430 based on Foata normal form. 2/9041 useless extension candidates. Maximal degree in co-relation 58912. Up to 7748 conditions per place. [2024-06-28 02:00:30,172 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 279 selfloop transitions, 58 changer transitions 0/347 dead transitions. [2024-06-28 02:00:30,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 347 transitions, 4588 flow [2024-06-28 02:00:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 02:00:30,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-28 02:00:30,175 INFO L175 Difference]: Start difference. First operand has 201 places, 295 transitions, 3585 flow. Second operand 9 states and 227 transitions. [2024-06-28 02:00:30,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 347 transitions, 4588 flow [2024-06-28 02:00:30,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 347 transitions, 4435 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:30,481 INFO L231 Difference]: Finished difference. Result has 204 places, 295 transitions, 3556 flow [2024-06-28 02:00:30,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3432, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3556, PETRI_PLACES=204, PETRI_TRANSITIONS=295} [2024-06-28 02:00:30,481 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 151 predicate places. [2024-06-28 02:00:30,482 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 295 transitions, 3556 flow [2024-06-28 02:00:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:30,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:30,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:00:30,482 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:30,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -242980280, now seen corresponding path program 5 times [2024-06-28 02:00:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396846570] [2024-06-28 02:00:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:31,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:31,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396846570] [2024-06-28 02:00:31,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396846570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:31,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:31,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:31,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126167866] [2024-06-28 02:00:31,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:31,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:31,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:31,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:31,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 295 transitions, 3556 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:31,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:31,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:31,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:33,608 INFO L124 PetriNetUnfolderBase]: 5685/9377 cut-off events. [2024-06-28 02:00:33,608 INFO L125 PetriNetUnfolderBase]: For 193529/193529 co-relation queries the response was YES. [2024-06-28 02:00:33,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59715 conditions, 9377 events. 5685/9377 cut-off events. For 193529/193529 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 64224 event pairs, 1428 based on Foata normal form. 2/9102 useless extension candidates. Maximal degree in co-relation 59617. Up to 7840 conditions per place. [2024-06-28 02:00:33,733 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 285 selfloop transitions, 56 changer transitions 0/351 dead transitions. [2024-06-28 02:00:33,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 351 transitions, 4536 flow [2024-06-28 02:00:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 02:00:33,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 02:00:33,734 INFO L175 Difference]: Start difference. First operand has 204 places, 295 transitions, 3556 flow. Second operand 9 states and 224 transitions. [2024-06-28 02:00:33,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 351 transitions, 4536 flow [2024-06-28 02:00:34,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 351 transitions, 4347 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:34,083 INFO L231 Difference]: Finished difference. Result has 207 places, 302 transitions, 3601 flow [2024-06-28 02:00:34,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3381, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3601, PETRI_PLACES=207, PETRI_TRANSITIONS=302} [2024-06-28 02:00:34,083 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-06-28 02:00:34,084 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 302 transitions, 3601 flow [2024-06-28 02:00:34,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:34,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:34,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:34,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:00:34,084 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:34,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -250331930, now seen corresponding path program 6 times [2024-06-28 02:00:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:34,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811870251] [2024-06-28 02:00:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:34,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:35,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:35,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811870251] [2024-06-28 02:00:35,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811870251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:35,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:35,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:35,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281746243] [2024-06-28 02:00:35,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:35,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:35,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:35,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:35,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:35,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:35,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 302 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 02:00:35,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:35,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:35,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:36,915 INFO L124 PetriNetUnfolderBase]: 5680/9308 cut-off events. [2024-06-28 02:00:36,915 INFO L125 PetriNetUnfolderBase]: For 196512/196512 co-relation queries the response was YES. [2024-06-28 02:00:36,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59529 conditions, 9308 events. 5680/9308 cut-off events. For 196512/196512 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 63138 event pairs, 1399 based on Foata normal form. 2/9042 useless extension candidates. Maximal degree in co-relation 59429. Up to 7735 conditions per place. [2024-06-28 02:00:37,036 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 284 selfloop transitions, 68 changer transitions 0/362 dead transitions. [2024-06-28 02:00:37,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 362 transitions, 4560 flow [2024-06-28 02:00:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:00:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:00:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-28 02:00:37,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-28 02:00:37,038 INFO L175 Difference]: Start difference. First operand has 207 places, 302 transitions, 3601 flow. Second operand 10 states and 248 transitions. [2024-06-28 02:00:37,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 362 transitions, 4560 flow [2024-06-28 02:00:37,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 362 transitions, 4410 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:37,432 INFO L231 Difference]: Finished difference. Result has 212 places, 304 transitions, 3624 flow [2024-06-28 02:00:37,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3451, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3624, PETRI_PLACES=212, PETRI_TRANSITIONS=304} [2024-06-28 02:00:37,432 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 159 predicate places. [2024-06-28 02:00:37,432 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 304 transitions, 3624 flow [2024-06-28 02:00:37,433 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 02:00:37,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:37,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:00:37,433 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:37,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash 974089563, now seen corresponding path program 1 times [2024-06-28 02:00:37,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:37,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585558474] [2024-06-28 02:00:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:38,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585558474] [2024-06-28 02:00:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585558474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:38,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:38,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:38,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934543935] [2024-06-28 02:00:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:38,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:38,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:38,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 304 transitions, 3624 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:38,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:38,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:38,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:39,636 INFO L124 PetriNetUnfolderBase]: 5702/9528 cut-off events. [2024-06-28 02:00:39,636 INFO L125 PetriNetUnfolderBase]: For 202846/202846 co-relation queries the response was YES. [2024-06-28 02:00:39,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60186 conditions, 9528 events. 5702/9528 cut-off events. For 202846/202846 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 66471 event pairs, 1440 based on Foata normal form. 1/9236 useless extension candidates. Maximal degree in co-relation 60084. Up to 8155 conditions per place. [2024-06-28 02:00:39,747 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 306 selfloop transitions, 24 changer transitions 0/340 dead transitions. [2024-06-28 02:00:39,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 340 transitions, 4580 flow [2024-06-28 02:00:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:00:39,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 02:00:39,749 INFO L175 Difference]: Start difference. First operand has 212 places, 304 transitions, 3624 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:00:39,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 340 transitions, 4580 flow [2024-06-28 02:00:40,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 340 transitions, 4456 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:40,009 INFO L231 Difference]: Finished difference. Result has 214 places, 310 transitions, 3672 flow [2024-06-28 02:00:40,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3672, PETRI_PLACES=214, PETRI_TRANSITIONS=310} [2024-06-28 02:00:40,009 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-28 02:00:40,009 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 310 transitions, 3672 flow [2024-06-28 02:00:40,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:40,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:40,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:40,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:00:40,010 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:40,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash 974094399, now seen corresponding path program 1 times [2024-06-28 02:00:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320419246] [2024-06-28 02:00:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:40,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320419246] [2024-06-28 02:00:40,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320419246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:40,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:40,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:40,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871694104] [2024-06-28 02:00:40,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:40,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:40,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:40,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:40,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 310 transitions, 3672 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:40,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:40,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:40,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:42,242 INFO L124 PetriNetUnfolderBase]: 6025/9831 cut-off events. [2024-06-28 02:00:42,242 INFO L125 PetriNetUnfolderBase]: For 213423/213423 co-relation queries the response was YES. [2024-06-28 02:00:42,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63013 conditions, 9831 events. 6025/9831 cut-off events. For 213423/213423 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 66818 event pairs, 1266 based on Foata normal form. 6/9569 useless extension candidates. Maximal degree in co-relation 62911. Up to 7777 conditions per place. [2024-06-28 02:00:42,337 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 264 selfloop transitions, 99 changer transitions 0/373 dead transitions. [2024-06-28 02:00:42,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 373 transitions, 4972 flow [2024-06-28 02:00:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:00:42,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-28 02:00:42,338 INFO L175 Difference]: Start difference. First operand has 214 places, 310 transitions, 3672 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:00:42,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 373 transitions, 4972 flow [2024-06-28 02:00:42,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 373 transitions, 4895 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:42,718 INFO L231 Difference]: Finished difference. Result has 219 places, 338 transitions, 4138 flow [2024-06-28 02:00:42,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3598, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4138, PETRI_PLACES=219, PETRI_TRANSITIONS=338} [2024-06-28 02:00:42,718 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-28 02:00:42,718 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 338 transitions, 4138 flow [2024-06-28 02:00:42,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:42,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:42,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:42,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:00:42,719 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:42,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 974094213, now seen corresponding path program 2 times [2024-06-28 02:00:42,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:42,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630258637] [2024-06-28 02:00:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:42,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630258637] [2024-06-28 02:00:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630258637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:43,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:43,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475646443] [2024-06-28 02:00:43,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:43,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:43,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:43,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:43,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:43,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 338 transitions, 4138 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:43,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:43,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:43,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:45,477 INFO L124 PetriNetUnfolderBase]: 6042/10071 cut-off events. [2024-06-28 02:00:45,478 INFO L125 PetriNetUnfolderBase]: For 222592/222592 co-relation queries the response was YES. [2024-06-28 02:00:45,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64579 conditions, 10071 events. 6042/10071 cut-off events. For 222592/222592 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 70602 event pairs, 1500 based on Foata normal form. 1/9767 useless extension candidates. Maximal degree in co-relation 64474. Up to 8639 conditions per place. [2024-06-28 02:00:45,612 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 335 selfloop transitions, 23 changer transitions 0/368 dead transitions. [2024-06-28 02:00:45,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 368 transitions, 5028 flow [2024-06-28 02:00:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 02:00:45,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734042553191489 [2024-06-28 02:00:45,613 INFO L175 Difference]: Start difference. First operand has 219 places, 338 transitions, 4138 flow. Second operand 8 states and 178 transitions. [2024-06-28 02:00:45,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 368 transitions, 5028 flow [2024-06-28 02:00:45,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 368 transitions, 4880 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:45,994 INFO L231 Difference]: Finished difference. Result has 224 places, 342 transitions, 4116 flow [2024-06-28 02:00:45,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4116, PETRI_PLACES=224, PETRI_TRANSITIONS=342} [2024-06-28 02:00:45,995 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-06-28 02:00:45,995 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 342 transitions, 4116 flow [2024-06-28 02:00:45,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:45,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:45,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:45,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:00:45,996 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:45,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1787055715, now seen corresponding path program 2 times [2024-06-28 02:00:45,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:45,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599734734] [2024-06-28 02:00:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:45,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:46,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599734734] [2024-06-28 02:00:46,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599734734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:46,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:46,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:46,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226101634] [2024-06-28 02:00:46,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:46,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:46,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:46,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:46,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 342 transitions, 4116 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:46,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:46,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:46,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:48,135 INFO L124 PetriNetUnfolderBase]: 6144/9934 cut-off events. [2024-06-28 02:00:48,135 INFO L125 PetriNetUnfolderBase]: For 229891/229891 co-relation queries the response was YES. [2024-06-28 02:00:48,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64547 conditions, 9934 events. 6144/9934 cut-off events. For 229891/229891 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 67538 event pairs, 1285 based on Foata normal form. 6/9693 useless extension candidates. Maximal degree in co-relation 64441. Up to 7866 conditions per place. [2024-06-28 02:00:48,255 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 255 selfloop transitions, 107 changer transitions 0/372 dead transitions. [2024-06-28 02:00:48,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 372 transitions, 5113 flow [2024-06-28 02:00:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 02:00:48,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 02:00:48,256 INFO L175 Difference]: Start difference. First operand has 224 places, 342 transitions, 4116 flow. Second operand 6 states and 153 transitions. [2024-06-28 02:00:48,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 372 transitions, 5113 flow [2024-06-28 02:00:48,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 372 transitions, 5021 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:48,829 INFO L231 Difference]: Finished difference. Result has 226 places, 346 transitions, 4313 flow [2024-06-28 02:00:48,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4313, PETRI_PLACES=226, PETRI_TRANSITIONS=346} [2024-06-28 02:00:48,830 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 173 predicate places. [2024-06-28 02:00:48,830 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 346 transitions, 4313 flow [2024-06-28 02:00:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:48,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:48,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:00:48,831 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:48,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1787055901, now seen corresponding path program 3 times [2024-06-28 02:00:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:48,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566903467] [2024-06-28 02:00:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566903467] [2024-06-28 02:00:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566903467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:49,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:49,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:00:49,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233281156] [2024-06-28 02:00:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:49,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:00:49,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:00:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:00:49,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:49,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 346 transitions, 4313 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:49,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:49,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:49,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:51,069 INFO L124 PetriNetUnfolderBase]: 6141/10275 cut-off events. [2024-06-28 02:00:51,070 INFO L125 PetriNetUnfolderBase]: For 236757/236757 co-relation queries the response was YES. [2024-06-28 02:00:51,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65817 conditions, 10275 events. 6141/10275 cut-off events. For 236757/236757 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 72620 event pairs, 1504 based on Foata normal form. 1/9954 useless extension candidates. Maximal degree in co-relation 65710. Up to 8767 conditions per place. [2024-06-28 02:00:51,205 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 338 selfloop transitions, 22 changer transitions 0/370 dead transitions. [2024-06-28 02:00:51,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 370 transitions, 5125 flow [2024-06-28 02:00:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 02:00:51,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 02:00:51,207 INFO L175 Difference]: Start difference. First operand has 226 places, 346 transitions, 4313 flow. Second operand 6 states and 147 transitions. [2024-06-28 02:00:51,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 370 transitions, 5125 flow [2024-06-28 02:00:51,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 370 transitions, 4960 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:51,624 INFO L231 Difference]: Finished difference. Result has 229 places, 346 transitions, 4202 flow [2024-06-28 02:00:51,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4148, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4202, PETRI_PLACES=229, PETRI_TRANSITIONS=346} [2024-06-28 02:00:51,624 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 176 predicate places. [2024-06-28 02:00:51,625 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 346 transitions, 4202 flow [2024-06-28 02:00:51,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:51,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:51,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:51,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:00:51,625 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:51,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1786789735, now seen corresponding path program 3 times [2024-06-28 02:00:51,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:51,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742304388] [2024-06-28 02:00:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742304388] [2024-06-28 02:00:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742304388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:52,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:52,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152052195] [2024-06-28 02:00:52,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:52,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:52,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:52,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:52,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:52,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 346 transitions, 4202 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:52,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:52,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:52,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:54,052 INFO L124 PetriNetUnfolderBase]: 6102/9969 cut-off events. [2024-06-28 02:00:54,053 INFO L125 PetriNetUnfolderBase]: For 231458/231458 co-relation queries the response was YES. [2024-06-28 02:00:54,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64117 conditions, 9969 events. 6102/9969 cut-off events. For 231458/231458 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 68829 event pairs, 1569 based on Foata normal form. 6/9730 useless extension candidates. Maximal degree in co-relation 64009. Up to 8607 conditions per place. [2024-06-28 02:00:54,187 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 314 selfloop transitions, 40 changer transitions 0/364 dead transitions. [2024-06-28 02:00:54,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 364 transitions, 5002 flow [2024-06-28 02:00:54,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 02:00:54,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 02:00:54,188 INFO L175 Difference]: Start difference. First operand has 229 places, 346 transitions, 4202 flow. Second operand 6 states and 144 transitions. [2024-06-28 02:00:54,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 364 transitions, 5002 flow [2024-06-28 02:00:54,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 364 transitions, 4944 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:54,670 INFO L231 Difference]: Finished difference. Result has 230 places, 346 transitions, 4231 flow [2024-06-28 02:00:54,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4231, PETRI_PLACES=230, PETRI_TRANSITIONS=346} [2024-06-28 02:00:54,671 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-28 02:00:54,671 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 346 transitions, 4231 flow [2024-06-28 02:00:54,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:54,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:54,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:00:54,672 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:54,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1786779846, now seen corresponding path program 1 times [2024-06-28 02:00:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:54,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085543747] [2024-06-28 02:00:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:55,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:55,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085543747] [2024-06-28 02:00:55,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085543747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:55,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:55,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:55,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326212834] [2024-06-28 02:00:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:55,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:55,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:55,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:55,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 346 transitions, 4231 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:55,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:55,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:55,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:57,357 INFO L124 PetriNetUnfolderBase]: 6253/10187 cut-off events. [2024-06-28 02:00:57,357 INFO L125 PetriNetUnfolderBase]: For 245050/245050 co-relation queries the response was YES. [2024-06-28 02:00:57,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65446 conditions, 10187 events. 6253/10187 cut-off events. For 245050/245050 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 70258 event pairs, 1573 based on Foata normal form. 14/9956 useless extension candidates. Maximal degree in co-relation 65337. Up to 8495 conditions per place. [2024-06-28 02:00:57,473 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 326 selfloop transitions, 42 changer transitions 0/378 dead transitions. [2024-06-28 02:00:57,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 378 transitions, 5211 flow [2024-06-28 02:00:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:00:57,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 02:00:57,474 INFO L175 Difference]: Start difference. First operand has 230 places, 346 transitions, 4231 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:00:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 378 transitions, 5211 flow [2024-06-28 02:00:57,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 378 transitions, 4970 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:57,861 INFO L231 Difference]: Finished difference. Result has 230 places, 348 transitions, 4111 flow [2024-06-28 02:00:57,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4111, PETRI_PLACES=230, PETRI_TRANSITIONS=348} [2024-06-28 02:00:57,861 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-28 02:00:57,862 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 348 transitions, 4111 flow [2024-06-28 02:00:57,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:57,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:57,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:57,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:00:57,862 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:57,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash -799953110, now seen corresponding path program 1 times [2024-06-28 02:00:57,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:57,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706618325] [2024-06-28 02:00:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:58,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:58,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706618325] [2024-06-28 02:00:58,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706618325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:58,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:58,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181627040] [2024-06-28 02:00:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:58,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:58,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:00:58,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 348 transitions, 4111 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:58,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:58,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:00:58,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:00,766 INFO L124 PetriNetUnfolderBase]: 6290/10306 cut-off events. [2024-06-28 02:01:00,766 INFO L125 PetriNetUnfolderBase]: For 239268/239268 co-relation queries the response was YES. [2024-06-28 02:01:00,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66183 conditions, 10306 events. 6290/10306 cut-off events. For 239268/239268 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 71640 event pairs, 1548 based on Foata normal form. 4/10058 useless extension candidates. Maximal degree in co-relation 66074. Up to 8706 conditions per place. [2024-06-28 02:01:00,868 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 356 selfloop transitions, 39 changer transitions 0/405 dead transitions. [2024-06-28 02:01:00,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 405 transitions, 5206 flow [2024-06-28 02:01:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 02:01:00,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 02:01:00,869 INFO L175 Difference]: Start difference. First operand has 230 places, 348 transitions, 4111 flow. Second operand 9 states and 222 transitions. [2024-06-28 02:01:00,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 405 transitions, 5206 flow [2024-06-28 02:01:01,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 405 transitions, 5107 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:01,227 INFO L231 Difference]: Finished difference. Result has 236 places, 354 transitions, 4225 flow [2024-06-28 02:01:01,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4012, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4225, PETRI_PLACES=236, PETRI_TRANSITIONS=354} [2024-06-28 02:01:01,227 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-28 02:01:01,228 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 354 transitions, 4225 flow [2024-06-28 02:01:01,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:01,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:01,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:01,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:01:01,228 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:01,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash 240741234, now seen corresponding path program 2 times [2024-06-28 02:01:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:01,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552184359] [2024-06-28 02:01:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:02,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:02,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552184359] [2024-06-28 02:01:02,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552184359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:02,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:02,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:02,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721119689] [2024-06-28 02:01:02,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:02,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:02,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:02,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 354 transitions, 4225 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:02,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:02,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:02,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:03,948 INFO L124 PetriNetUnfolderBase]: 6327/10225 cut-off events. [2024-06-28 02:01:03,948 INFO L125 PetriNetUnfolderBase]: For 251596/251596 co-relation queries the response was YES. [2024-06-28 02:01:04,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66998 conditions, 10225 events. 6327/10225 cut-off events. For 251596/251596 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 69993 event pairs, 1516 based on Foata normal form. 4/10004 useless extension candidates. Maximal degree in co-relation 66887. Up to 8916 conditions per place. [2024-06-28 02:01:04,084 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 373 selfloop transitions, 29 changer transitions 0/412 dead transitions. [2024-06-28 02:01:04,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 412 transitions, 5327 flow [2024-06-28 02:01:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 02:01:04,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-28 02:01:04,085 INFO L175 Difference]: Start difference. First operand has 236 places, 354 transitions, 4225 flow. Second operand 9 states and 220 transitions. [2024-06-28 02:01:04,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 412 transitions, 5327 flow [2024-06-28 02:01:04,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 412 transitions, 5194 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 02:01:04,664 INFO L231 Difference]: Finished difference. Result has 244 places, 361 transitions, 4298 flow [2024-06-28 02:01:04,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4298, PETRI_PLACES=244, PETRI_TRANSITIONS=361} [2024-06-28 02:01:04,664 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 191 predicate places. [2024-06-28 02:01:04,664 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 361 transitions, 4298 flow [2024-06-28 02:01:04,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:04,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:04,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:04,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:01:04,665 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash 330407184, now seen corresponding path program 3 times [2024-06-28 02:01:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918236300] [2024-06-28 02:01:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:05,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:05,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918236300] [2024-06-28 02:01:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918236300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:05,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:05,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857058178] [2024-06-28 02:01:05,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:05,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:05,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:05,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 361 transitions, 4298 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:05,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:05,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:07,451 INFO L124 PetriNetUnfolderBase]: 6364/10276 cut-off events. [2024-06-28 02:01:07,451 INFO L125 PetriNetUnfolderBase]: For 260454/260454 co-relation queries the response was YES. [2024-06-28 02:01:07,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67519 conditions, 10276 events. 6364/10276 cut-off events. For 260454/260454 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 70484 event pairs, 1589 based on Foata normal form. 4/10056 useless extension candidates. Maximal degree in co-relation 67404. Up to 9025 conditions per place. [2024-06-28 02:01:07,581 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 374 selfloop transitions, 30 changer transitions 0/414 dead transitions. [2024-06-28 02:01:07,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 414 transitions, 5342 flow [2024-06-28 02:01:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:01:07,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 02:01:07,582 INFO L175 Difference]: Start difference. First operand has 244 places, 361 transitions, 4298 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:01:07,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 414 transitions, 5342 flow [2024-06-28 02:01:08,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 414 transitions, 5209 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:08,172 INFO L231 Difference]: Finished difference. Result has 249 places, 363 transitions, 4286 flow [2024-06-28 02:01:08,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4286, PETRI_PLACES=249, PETRI_TRANSITIONS=363} [2024-06-28 02:01:08,172 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 196 predicate places. [2024-06-28 02:01:08,172 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 363 transitions, 4286 flow [2024-06-28 02:01:08,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:08,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:08,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:08,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:01:08,175 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:08,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash 330229554, now seen corresponding path program 4 times [2024-06-28 02:01:08,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:08,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835103694] [2024-06-28 02:01:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:08,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:09,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:09,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835103694] [2024-06-28 02:01:09,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835103694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:09,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:09,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:09,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862794789] [2024-06-28 02:01:09,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:09,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:09,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:09,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 363 transitions, 4286 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:09,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:09,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:09,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:11,013 INFO L124 PetriNetUnfolderBase]: 6401/10337 cut-off events. [2024-06-28 02:01:11,014 INFO L125 PetriNetUnfolderBase]: For 268592/268592 co-relation queries the response was YES. [2024-06-28 02:01:11,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68018 conditions, 10337 events. 6401/10337 cut-off events. For 268592/268592 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 70921 event pairs, 1581 based on Foata normal form. 4/10116 useless extension candidates. Maximal degree in co-relation 67901. Up to 9003 conditions per place. [2024-06-28 02:01:11,144 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 376 selfloop transitions, 33 changer transitions 0/419 dead transitions. [2024-06-28 02:01:11,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 419 transitions, 5390 flow [2024-06-28 02:01:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 02:01:11,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-28 02:01:11,148 INFO L175 Difference]: Start difference. First operand has 249 places, 363 transitions, 4286 flow. Second operand 9 states and 223 transitions. [2024-06-28 02:01:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 419 transitions, 5390 flow [2024-06-28 02:01:11,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 419 transitions, 5287 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:11,758 INFO L231 Difference]: Finished difference. Result has 252 places, 367 transitions, 4366 flow [2024-06-28 02:01:11,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4183, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4366, PETRI_PLACES=252, PETRI_TRANSITIONS=367} [2024-06-28 02:01:11,759 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 199 predicate places. [2024-06-28 02:01:11,759 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 367 transitions, 4366 flow [2024-06-28 02:01:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:11,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:11,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:01:11,760 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:11,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash 340225168, now seen corresponding path program 1 times [2024-06-28 02:01:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:11,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797753278] [2024-06-28 02:01:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:11,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:12,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:12,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797753278] [2024-06-28 02:01:12,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797753278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:12,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:12,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136047068] [2024-06-28 02:01:12,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:12,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:12,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 367 transitions, 4366 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:12,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:12,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:12,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:15,093 INFO L124 PetriNetUnfolderBase]: 6652/10846 cut-off events. [2024-06-28 02:01:15,093 INFO L125 PetriNetUnfolderBase]: For 310977/310977 co-relation queries the response was YES. [2024-06-28 02:01:15,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72237 conditions, 10846 events. 6652/10846 cut-off events. For 310977/310977 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 75546 event pairs, 1469 based on Foata normal form. 12/10605 useless extension candidates. Maximal degree in co-relation 72118. Up to 8736 conditions per place. [2024-06-28 02:01:15,227 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 377 selfloop transitions, 48 changer transitions 0/435 dead transitions. [2024-06-28 02:01:15,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 435 transitions, 5750 flow [2024-06-28 02:01:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:01:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:01:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 02:01:15,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-28 02:01:15,228 INFO L175 Difference]: Start difference. First operand has 252 places, 367 transitions, 4366 flow. Second operand 10 states and 253 transitions. [2024-06-28 02:01:15,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 435 transitions, 5750 flow [2024-06-28 02:01:15,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 435 transitions, 5629 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:15,867 INFO L231 Difference]: Finished difference. Result has 257 places, 369 transitions, 4417 flow [2024-06-28 02:01:15,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4417, PETRI_PLACES=257, PETRI_TRANSITIONS=369} [2024-06-28 02:01:15,867 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 204 predicate places. [2024-06-28 02:01:15,868 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 369 transitions, 4417 flow [2024-06-28 02:01:15,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:15,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:15,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:15,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:01:15,868 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:15,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:15,869 INFO L85 PathProgramCache]: Analyzing trace with hash 339928498, now seen corresponding path program 2 times [2024-06-28 02:01:15,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:15,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65480435] [2024-06-28 02:01:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:15,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:16,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:16,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65480435] [2024-06-28 02:01:16,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65480435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:16,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822439708] [2024-06-28 02:01:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:16,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:16,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:17,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:17,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 369 transitions, 4417 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:17,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:17,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:17,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:19,255 INFO L124 PetriNetUnfolderBase]: 6661/10779 cut-off events. [2024-06-28 02:01:19,255 INFO L125 PetriNetUnfolderBase]: For 307848/307848 co-relation queries the response was YES. [2024-06-28 02:01:19,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71628 conditions, 10779 events. 6661/10779 cut-off events. For 307848/307848 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 74668 event pairs, 1629 based on Foata normal form. 16/10561 useless extension candidates. Maximal degree in co-relation 71507. Up to 9145 conditions per place. [2024-06-28 02:01:19,381 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 382 selfloop transitions, 48 changer transitions 0/440 dead transitions. [2024-06-28 02:01:19,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 440 transitions, 5600 flow [2024-06-28 02:01:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:01:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:01:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-06-28 02:01:19,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528046421663443 [2024-06-28 02:01:19,382 INFO L175 Difference]: Start difference. First operand has 257 places, 369 transitions, 4417 flow. Second operand 11 states and 273 transitions. [2024-06-28 02:01:19,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 440 transitions, 5600 flow [2024-06-28 02:01:20,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 440 transitions, 5502 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:20,032 INFO L231 Difference]: Finished difference. Result has 261 places, 371 transitions, 4446 flow [2024-06-28 02:01:20,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4446, PETRI_PLACES=261, PETRI_TRANSITIONS=371} [2024-06-28 02:01:20,033 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-28 02:01:20,033 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 371 transitions, 4446 flow [2024-06-28 02:01:20,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:20,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:20,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:20,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:01:20,034 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:20,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash -901731854, now seen corresponding path program 3 times [2024-06-28 02:01:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120155034] [2024-06-28 02:01:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:20,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:21,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120155034] [2024-06-28 02:01:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120155034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:21,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:21,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:21,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656527474] [2024-06-28 02:01:21,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:21,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:21,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 371 transitions, 4446 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:21,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:21,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:21,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:23,558 INFO L124 PetriNetUnfolderBase]: 6811/11037 cut-off events. [2024-06-28 02:01:23,558 INFO L125 PetriNetUnfolderBase]: For 316608/316608 co-relation queries the response was YES. [2024-06-28 02:01:23,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73336 conditions, 11037 events. 6811/11037 cut-off events. For 316608/316608 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 76792 event pairs, 1703 based on Foata normal form. 16/10812 useless extension candidates. Maximal degree in co-relation 73214. Up to 9549 conditions per place. [2024-06-28 02:01:23,704 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 396 selfloop transitions, 41 changer transitions 0/447 dead transitions. [2024-06-28 02:01:23,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 447 transitions, 5715 flow [2024-06-28 02:01:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:01:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:01:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-06-28 02:01:23,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 02:01:23,706 INFO L175 Difference]: Start difference. First operand has 261 places, 371 transitions, 4446 flow. Second operand 11 states and 264 transitions. [2024-06-28 02:01:23,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 447 transitions, 5715 flow [2024-06-28 02:01:24,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 447 transitions, 5614 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 02:01:24,347 INFO L231 Difference]: Finished difference. Result has 266 places, 384 transitions, 4612 flow [2024-06-28 02:01:24,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4345, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4612, PETRI_PLACES=266, PETRI_TRANSITIONS=384} [2024-06-28 02:01:24,347 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-28 02:01:24,347 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 384 transitions, 4612 flow [2024-06-28 02:01:24,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:24,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:24,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:24,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:01:24,348 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:24,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:24,348 INFO L85 PathProgramCache]: Analyzing trace with hash -443546320, now seen corresponding path program 5 times [2024-06-28 02:01:24,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:24,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064852881] [2024-06-28 02:01:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:24,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:25,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064852881] [2024-06-28 02:01:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064852881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:25,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:25,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454445270] [2024-06-28 02:01:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:25,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:25,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:25,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 384 transitions, 4612 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:25,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:25,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:25,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:27,350 INFO L124 PetriNetUnfolderBase]: 6848/11277 cut-off events. [2024-06-28 02:01:27,350 INFO L125 PetriNetUnfolderBase]: For 316097/316097 co-relation queries the response was YES. [2024-06-28 02:01:27,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74198 conditions, 11277 events. 6848/11277 cut-off events. For 316097/316097 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 79403 event pairs, 1554 based on Foata normal form. 4/10964 useless extension candidates. Maximal degree in co-relation 74071. Up to 9511 conditions per place. [2024-06-28 02:01:27,515 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 371 selfloop transitions, 55 changer transitions 0/436 dead transitions. [2024-06-28 02:01:27,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 436 transitions, 5711 flow [2024-06-28 02:01:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 02:01:27,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 02:01:27,516 INFO L175 Difference]: Start difference. First operand has 266 places, 384 transitions, 4612 flow. Second operand 9 states and 224 transitions. [2024-06-28 02:01:27,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 436 transitions, 5711 flow [2024-06-28 02:01:28,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 436 transitions, 5629 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:28,560 INFO L231 Difference]: Finished difference. Result has 270 places, 386 transitions, 4696 flow [2024-06-28 02:01:28,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4696, PETRI_PLACES=270, PETRI_TRANSITIONS=386} [2024-06-28 02:01:28,560 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-06-28 02:01:28,560 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 386 transitions, 4696 flow [2024-06-28 02:01:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:28,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:28,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:28,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:01:28,561 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:28,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash 829639398, now seen corresponding path program 6 times [2024-06-28 02:01:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964522228] [2024-06-28 02:01:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:29,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:29,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964522228] [2024-06-28 02:01:29,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964522228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:29,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:29,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480217363] [2024-06-28 02:01:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:29,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:29,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:29,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:29,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 386 transitions, 4696 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:29,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:29,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:29,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:31,727 INFO L124 PetriNetUnfolderBase]: 6840/11121 cut-off events. [2024-06-28 02:01:31,727 INFO L125 PetriNetUnfolderBase]: For 317704/317704 co-relation queries the response was YES. [2024-06-28 02:01:31,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73979 conditions, 11121 events. 6840/11121 cut-off events. For 317704/317704 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 77523 event pairs, 1468 based on Foata normal form. 4/10841 useless extension candidates. Maximal degree in co-relation 73851. Up to 9499 conditions per place. [2024-06-28 02:01:31,893 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 370 selfloop transitions, 58 changer transitions 0/438 dead transitions. [2024-06-28 02:01:31,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 438 transitions, 5803 flow [2024-06-28 02:01:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:01:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:01:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-28 02:01:31,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-06-28 02:01:31,895 INFO L175 Difference]: Start difference. First operand has 270 places, 386 transitions, 4696 flow. Second operand 10 states and 238 transitions. [2024-06-28 02:01:31,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 438 transitions, 5803 flow [2024-06-28 02:01:33,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 438 transitions, 5658 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:33,090 INFO L231 Difference]: Finished difference. Result has 273 places, 388 transitions, 4727 flow [2024-06-28 02:01:33,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4551, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4727, PETRI_PLACES=273, PETRI_TRANSITIONS=388} [2024-06-28 02:01:33,091 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 220 predicate places. [2024-06-28 02:01:33,091 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 388 transitions, 4727 flow [2024-06-28 02:01:33,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:33,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:33,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:01:33,091 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:33,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -671625100, now seen corresponding path program 7 times [2024-06-28 02:01:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871230315] [2024-06-28 02:01:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:34,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871230315] [2024-06-28 02:01:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871230315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:34,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:34,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260671342] [2024-06-28 02:01:34,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:34,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:34,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:34,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:34,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 388 transitions, 4727 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:34,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:34,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:34,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:36,379 INFO L124 PetriNetUnfolderBase]: 6840/11117 cut-off events. [2024-06-28 02:01:36,379 INFO L125 PetriNetUnfolderBase]: For 323363/323363 co-relation queries the response was YES. [2024-06-28 02:01:36,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74023 conditions, 11117 events. 6840/11117 cut-off events. For 323363/323363 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 77349 event pairs, 1450 based on Foata normal form. 4/10841 useless extension candidates. Maximal degree in co-relation 73894. Up to 9354 conditions per place. [2024-06-28 02:01:36,520 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 372 selfloop transitions, 63 changer transitions 0/445 dead transitions. [2024-06-28 02:01:36,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 445 transitions, 5960 flow [2024-06-28 02:01:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 02:01:36,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 02:01:36,522 INFO L175 Difference]: Start difference. First operand has 273 places, 388 transitions, 4727 flow. Second operand 9 states and 224 transitions. [2024-06-28 02:01:36,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 445 transitions, 5960 flow [2024-06-28 02:01:37,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 445 transitions, 5805 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 02:01:37,397 INFO L231 Difference]: Finished difference. Result has 275 places, 394 transitions, 4884 flow [2024-06-28 02:01:37,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4884, PETRI_PLACES=275, PETRI_TRANSITIONS=394} [2024-06-28 02:01:37,398 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-06-28 02:01:37,398 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 394 transitions, 4884 flow [2024-06-28 02:01:37,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:37,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:37,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:37,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:01:37,398 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:37,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1057547492, now seen corresponding path program 4 times [2024-06-28 02:01:37,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:37,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745897461] [2024-06-28 02:01:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:37,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:38,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745897461] [2024-06-28 02:01:38,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745897461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:38,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:38,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:38,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480917929] [2024-06-28 02:01:38,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:38,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:38,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:38,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:38,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:38,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 394 transitions, 4884 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:38,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:38,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:38,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:40,738 INFO L124 PetriNetUnfolderBase]: 6970/11340 cut-off events. [2024-06-28 02:01:40,738 INFO L125 PetriNetUnfolderBase]: For 350987/350987 co-relation queries the response was YES. [2024-06-28 02:01:40,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75959 conditions, 11340 events. 6970/11340 cut-off events. For 350987/350987 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 79364 event pairs, 1499 based on Foata normal form. 16/11069 useless extension candidates. Maximal degree in co-relation 75828. Up to 9546 conditions per place. [2024-06-28 02:01:40,890 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 389 selfloop transitions, 57 changer transitions 0/456 dead transitions. [2024-06-28 02:01:40,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 456 transitions, 6083 flow [2024-06-28 02:01:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:01:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:01:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 02:01:40,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:01:40,891 INFO L175 Difference]: Start difference. First operand has 275 places, 394 transitions, 4884 flow. Second operand 10 states and 250 transitions. [2024-06-28 02:01:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 456 transitions, 6083 flow [2024-06-28 02:01:41,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 456 transitions, 5886 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:41,970 INFO L231 Difference]: Finished difference. Result has 280 places, 395 transitions, 4835 flow [2024-06-28 02:01:41,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4835, PETRI_PLACES=280, PETRI_TRANSITIONS=395} [2024-06-28 02:01:41,970 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-06-28 02:01:41,970 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 395 transitions, 4835 flow [2024-06-28 02:01:41,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:41,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:41,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:41,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:01:41,971 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:41,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:41,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1065821702, now seen corresponding path program 5 times [2024-06-28 02:01:41,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:41,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752372975] [2024-06-28 02:01:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:41,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:43,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:43,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752372975] [2024-06-28 02:01:43,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752372975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:43,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:43,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:43,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429541934] [2024-06-28 02:01:43,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:43,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:43,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:43,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:43,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:43,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 395 transitions, 4835 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:43,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:43,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:43,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:45,484 INFO L124 PetriNetUnfolderBase]: 7100/11543 cut-off events. [2024-06-28 02:01:45,484 INFO L125 PetriNetUnfolderBase]: For 361323/361323 co-relation queries the response was YES. [2024-06-28 02:01:45,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77394 conditions, 11543 events. 7100/11543 cut-off events. For 361323/361323 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 80942 event pairs, 1515 based on Foata normal form. 16/11274 useless extension candidates. Maximal degree in co-relation 77261. Up to 9663 conditions per place. [2024-06-28 02:01:45,628 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 387 selfloop transitions, 68 changer transitions 0/465 dead transitions. [2024-06-28 02:01:45,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 465 transitions, 6101 flow [2024-06-28 02:01:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:01:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:01:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-28 02:01:45,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338491295938105 [2024-06-28 02:01:45,629 INFO L175 Difference]: Start difference. First operand has 280 places, 395 transitions, 4835 flow. Second operand 11 states and 276 transitions. [2024-06-28 02:01:45,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 465 transitions, 6101 flow [2024-06-28 02:01:46,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 465 transitions, 5970 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:01:46,522 INFO L231 Difference]: Finished difference. Result has 283 places, 396 transitions, 4892 flow [2024-06-28 02:01:46,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4704, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4892, PETRI_PLACES=283, PETRI_TRANSITIONS=396} [2024-06-28 02:01:46,522 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 230 predicate places. [2024-06-28 02:01:46,522 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 396 transitions, 4892 flow [2024-06-28 02:01:46,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:46,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:46,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:46,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:01:46,523 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:46,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1066118372, now seen corresponding path program 6 times [2024-06-28 02:01:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:46,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16966691] [2024-06-28 02:01:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:47,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:47,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16966691] [2024-06-28 02:01:47,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16966691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:47,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:47,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:47,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465506526] [2024-06-28 02:01:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:47,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:47,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:47,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:47,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:47,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:47,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 396 transitions, 4892 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:47,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:47,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:47,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:50,268 INFO L124 PetriNetUnfolderBase]: 7193/11671 cut-off events. [2024-06-28 02:01:50,268 INFO L125 PetriNetUnfolderBase]: For 372127/372127 co-relation queries the response was YES. [2024-06-28 02:01:50,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78653 conditions, 11671 events. 7193/11671 cut-off events. For 372127/372127 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 81846 event pairs, 1511 based on Foata normal form. 12/11413 useless extension candidates. Maximal degree in co-relation 78519. Up to 9197 conditions per place. [2024-06-28 02:01:50,406 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 382 selfloop transitions, 71 changer transitions 0/463 dead transitions. [2024-06-28 02:01:50,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 463 transitions, 6348 flow [2024-06-28 02:01:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:01:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:01:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 02:01:50,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-28 02:01:50,407 INFO L175 Difference]: Start difference. First operand has 283 places, 396 transitions, 4892 flow. Second operand 10 states and 256 transitions. [2024-06-28 02:01:50,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 463 transitions, 6348 flow [2024-06-28 02:01:51,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 463 transitions, 6196 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:01:51,278 INFO L231 Difference]: Finished difference. Result has 284 places, 397 transitions, 4932 flow [2024-06-28 02:01:51,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4740, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4932, PETRI_PLACES=284, PETRI_TRANSITIONS=397} [2024-06-28 02:01:51,279 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-28 02:01:51,279 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 397 transitions, 4932 flow [2024-06-28 02:01:51,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:51,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:51,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:51,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:01:51,279 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:51,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash 829646342, now seen corresponding path program 7 times [2024-06-28 02:01:51,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:51,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44674183] [2024-06-28 02:01:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:51,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:52,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:52,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44674183] [2024-06-28 02:01:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44674183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:52,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:52,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610594102] [2024-06-28 02:01:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:52,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:52,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:52,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:52,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 397 transitions, 4932 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:52,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:52,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:52,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:55,353 INFO L124 PetriNetUnfolderBase]: 7278/11900 cut-off events. [2024-06-28 02:01:55,353 INFO L125 PetriNetUnfolderBase]: For 379943/379943 co-relation queries the response was YES. [2024-06-28 02:01:55,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79322 conditions, 11900 events. 7278/11900 cut-off events. For 379943/379943 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 84424 event pairs, 1585 based on Foata normal form. 16/11611 useless extension candidates. Maximal degree in co-relation 79187. Up to 9978 conditions per place. [2024-06-28 02:01:55,485 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 390 selfloop transitions, 59 changer transitions 0/459 dead transitions. [2024-06-28 02:01:55,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 459 transitions, 6139 flow [2024-06-28 02:01:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:01:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:01:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 02:01:55,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:01:55,486 INFO L175 Difference]: Start difference. First operand has 284 places, 397 transitions, 4932 flow. Second operand 10 states and 250 transitions. [2024-06-28 02:01:55,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 459 transitions, 6139 flow [2024-06-28 02:01:56,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 459 transitions, 5986 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:56,223 INFO L231 Difference]: Finished difference. Result has 287 places, 398 transitions, 4935 flow [2024-06-28 02:01:56,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4780, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4935, PETRI_PLACES=287, PETRI_TRANSITIONS=398} [2024-06-28 02:01:56,224 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 234 predicate places. [2024-06-28 02:01:56,224 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 398 transitions, 4935 flow [2024-06-28 02:01:56,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:56,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:56,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:56,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:01:56,224 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:56,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash 169186498, now seen corresponding path program 8 times [2024-06-28 02:01:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:56,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085218837] [2024-06-28 02:01:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:56,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085218837] [2024-06-28 02:01:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085218837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:57,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:57,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:01:57,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660066684] [2024-06-28 02:01:57,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:01:57,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:01:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:01:57,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:01:57,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 398 transitions, 4935 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:57,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:57,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:01:57,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:59,795 INFO L124 PetriNetUnfolderBase]: 7612/12437 cut-off events. [2024-06-28 02:01:59,795 INFO L125 PetriNetUnfolderBase]: For 418221/418221 co-relation queries the response was YES. [2024-06-28 02:01:59,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83894 conditions, 12437 events. 7612/12437 cut-off events. For 418221/418221 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 88763 event pairs, 1625 based on Foata normal form. 12/12146 useless extension candidates. Maximal degree in co-relation 83758. Up to 10085 conditions per place. [2024-06-28 02:01:59,974 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 393 selfloop transitions, 71 changer transitions 0/474 dead transitions. [2024-06-28 02:01:59,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 474 transitions, 6539 flow [2024-06-28 02:01:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:01:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:01:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 02:01:59,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 02:01:59,975 INFO L175 Difference]: Start difference. First operand has 287 places, 398 transitions, 4935 flow. Second operand 10 states and 255 transitions. [2024-06-28 02:01:59,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 474 transitions, 6539 flow [2024-06-28 02:02:00,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 474 transitions, 6414 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:02:00,887 INFO L231 Difference]: Finished difference. Result has 291 places, 407 transitions, 5144 flow [2024-06-28 02:02:00,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5144, PETRI_PLACES=291, PETRI_TRANSITIONS=407} [2024-06-28 02:02:00,888 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 238 predicate places. [2024-06-28 02:02:00,888 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 407 transitions, 5144 flow [2024-06-28 02:02:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:00,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:00,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:00,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:02:00,889 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:00,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash 168889828, now seen corresponding path program 9 times [2024-06-28 02:02:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134134913] [2024-06-28 02:02:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134134913] [2024-06-28 02:02:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134134913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:01,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:01,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:02:01,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704059055] [2024-06-28 02:02:01,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:01,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:02:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:01,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:02:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:02:02,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:02,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 407 transitions, 5144 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:02,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:02,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:02,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:04,716 INFO L124 PetriNetUnfolderBase]: 7584/12458 cut-off events. [2024-06-28 02:02:04,716 INFO L125 PetriNetUnfolderBase]: For 414731/414731 co-relation queries the response was YES. [2024-06-28 02:02:04,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83301 conditions, 12458 events. 7584/12458 cut-off events. For 414731/414731 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 89664 event pairs, 1660 based on Foata normal form. 16/12148 useless extension candidates. Maximal degree in co-relation 83162. Up to 10430 conditions per place. [2024-06-28 02:02:04,904 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 396 selfloop transitions, 71 changer transitions 0/477 dead transitions. [2024-06-28 02:02:04,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 477 transitions, 6404 flow [2024-06-28 02:02:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:02:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:02:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-28 02:02:04,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299806576402321 [2024-06-28 02:02:04,905 INFO L175 Difference]: Start difference. First operand has 291 places, 407 transitions, 5144 flow. Second operand 11 states and 274 transitions. [2024-06-28 02:02:04,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 477 transitions, 6404 flow [2024-06-28 02:02:06,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 477 transitions, 6275 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:06,029 INFO L231 Difference]: Finished difference. Result has 298 places, 408 transitions, 5187 flow [2024-06-28 02:02:06,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5187, PETRI_PLACES=298, PETRI_TRANSITIONS=408} [2024-06-28 02:02:06,029 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 245 predicate places. [2024-06-28 02:02:06,029 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 408 transitions, 5187 flow [2024-06-28 02:02:06,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:06,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:06,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:06,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:02:06,030 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:06,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1303928036, now seen corresponding path program 10 times [2024-06-28 02:02:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:06,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021742891] [2024-06-28 02:02:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:07,067 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 02:02:07,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021742891] [2024-06-28 02:02:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021742891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:07,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:07,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:02:07,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874407111] [2024-06-28 02:02:07,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:07,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:02:07,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:02:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:02:07,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:07,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 408 transitions, 5187 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:07,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:07,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:07,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:09,848 INFO L124 PetriNetUnfolderBase]: 7835/12871 cut-off events. [2024-06-28 02:02:09,848 INFO L125 PetriNetUnfolderBase]: For 444938/444938 co-relation queries the response was YES. [2024-06-28 02:02:09,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87370 conditions, 12871 events. 7835/12871 cut-off events. For 444938/444938 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 93023 event pairs, 1673 based on Foata normal form. 12/12557 useless extension candidates. Maximal degree in co-relation 87228. Up to 10479 conditions per place. [2024-06-28 02:02:10,025 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 372 selfloop transitions, 94 changer transitions 0/476 dead transitions. [2024-06-28 02:02:10,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 476 transitions, 6735 flow [2024-06-28 02:02:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:02:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:02:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 02:02:10,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 02:02:10,026 INFO L175 Difference]: Start difference. First operand has 298 places, 408 transitions, 5187 flow. Second operand 10 states and 255 transitions. [2024-06-28 02:02:10,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 476 transitions, 6735 flow [2024-06-28 02:02:11,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 476 transitions, 6597 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:02:11,388 INFO L231 Difference]: Finished difference. Result has 300 places, 410 transitions, 5337 flow [2024-06-28 02:02:11,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5337, PETRI_PLACES=300, PETRI_TRANSITIONS=410} [2024-06-28 02:02:11,388 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 247 predicate places. [2024-06-28 02:02:11,388 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 410 transitions, 5337 flow [2024-06-28 02:02:11,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:11,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:11,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:02:11,389 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:11,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1645123210, now seen corresponding path program 11 times [2024-06-28 02:02:11,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:11,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547220045] [2024-06-28 02:02:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:11,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:12,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547220045] [2024-06-28 02:02:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547220045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:12,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:02:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632574206] [2024-06-28 02:02:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:12,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:02:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:12,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:02:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:02:12,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:12,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 410 transitions, 5337 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:12,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:12,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:12,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:15,001 INFO L124 PetriNetUnfolderBase]: 7845/12249 cut-off events. [2024-06-28 02:02:15,001 INFO L125 PetriNetUnfolderBase]: For 444680/444680 co-relation queries the response was YES. [2024-06-28 02:02:15,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86794 conditions, 12249 events. 7845/12249 cut-off events. For 444680/444680 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 82845 event pairs, 1406 based on Foata normal form. 16/12147 useless extension candidates. Maximal degree in co-relation 86651. Up to 10490 conditions per place. [2024-06-28 02:02:15,183 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 329 selfloop transitions, 155 changer transitions 0/494 dead transitions. [2024-06-28 02:02:15,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 494 transitions, 7185 flow [2024-06-28 02:02:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:02:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:02:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-28 02:02:15,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-28 02:02:15,192 INFO L175 Difference]: Start difference. First operand has 300 places, 410 transitions, 5337 flow. Second operand 10 states and 252 transitions. [2024-06-28 02:02:15,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 494 transitions, 7185 flow [2024-06-28 02:02:16,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 494 transitions, 6975 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 02:02:16,655 INFO L231 Difference]: Finished difference. Result has 306 places, 430 transitions, 6164 flow [2024-06-28 02:02:16,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5127, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6164, PETRI_PLACES=306, PETRI_TRANSITIONS=430} [2024-06-28 02:02:16,655 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 253 predicate places. [2024-06-28 02:02:16,655 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 430 transitions, 6164 flow [2024-06-28 02:02:16,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:16,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:16,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:02:16,656 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:16,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1646226626, now seen corresponding path program 12 times [2024-06-28 02:02:16,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:16,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149529862] [2024-06-28 02:02:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:16,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:17,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149529862] [2024-06-28 02:02:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149529862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:17,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:17,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:02:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456987251] [2024-06-28 02:02:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:17,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:02:17,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:02:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:02:17,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:17,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 430 transitions, 6164 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:17,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:17,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:17,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:20,715 INFO L124 PetriNetUnfolderBase]: 8180/13354 cut-off events. [2024-06-28 02:02:20,715 INFO L125 PetriNetUnfolderBase]: For 455773/455773 co-relation queries the response was YES. [2024-06-28 02:02:20,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91727 conditions, 13354 events. 8180/13354 cut-off events. For 455773/455773 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 95601 event pairs, 1441 based on Foata normal form. 12/13066 useless extension candidates. Maximal degree in co-relation 91581. Up to 9163 conditions per place. [2024-06-28 02:02:20,916 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 383 selfloop transitions, 108 changer transitions 0/501 dead transitions. [2024-06-28 02:02:20,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 501 transitions, 7615 flow [2024-06-28 02:02:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:02:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:02:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 02:02:20,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-28 02:02:20,917 INFO L175 Difference]: Start difference. First operand has 306 places, 430 transitions, 6164 flow. Second operand 10 states and 253 transitions. [2024-06-28 02:02:20,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 501 transitions, 7615 flow [2024-06-28 02:02:22,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 501 transitions, 7179 flow, removed 203 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:22,484 INFO L231 Difference]: Finished difference. Result has 314 places, 434 transitions, 6133 flow [2024-06-28 02:02:22,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5768, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6133, PETRI_PLACES=314, PETRI_TRANSITIONS=434} [2024-06-28 02:02:22,485 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 261 predicate places. [2024-06-28 02:02:22,485 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 434 transitions, 6133 flow [2024-06-28 02:02:22,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:22,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:22,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:22,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:02:22,486 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:22,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash 128341740, now seen corresponding path program 1 times [2024-06-28 02:02:22,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:22,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161204710] [2024-06-28 02:02:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:22,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:23,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161204710] [2024-06-28 02:02:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161204710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:23,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:23,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173307011] [2024-06-28 02:02:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:23,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:23,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:23,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 434 transitions, 6133 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:23,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:23,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:23,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:26,184 INFO L124 PetriNetUnfolderBase]: 8202/13680 cut-off events. [2024-06-28 02:02:26,184 INFO L125 PetriNetUnfolderBase]: For 446239/446239 co-relation queries the response was YES. [2024-06-28 02:02:26,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92715 conditions, 13680 events. 8202/13680 cut-off events. For 446239/446239 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 101911 event pairs, 2055 based on Foata normal form. 1/13310 useless extension candidates. Maximal degree in co-relation 92567. Up to 11865 conditions per place. [2024-06-28 02:02:26,386 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 434 selfloop transitions, 39 changer transitions 0/483 dead transitions. [2024-06-28 02:02:26,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 483 transitions, 7503 flow [2024-06-28 02:02:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:02:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:02:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:02:26,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-28 02:02:26,387 INFO L175 Difference]: Start difference. First operand has 314 places, 434 transitions, 6133 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:02:26,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 483 transitions, 7503 flow [2024-06-28 02:02:27,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 483 transitions, 7271 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:02:27,724 INFO L231 Difference]: Finished difference. Result has 316 places, 440 transitions, 6124 flow [2024-06-28 02:02:27,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5901, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6124, PETRI_PLACES=316, PETRI_TRANSITIONS=440} [2024-06-28 02:02:27,725 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 263 predicate places. [2024-06-28 02:02:27,725 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 440 transitions, 6124 flow [2024-06-28 02:02:27,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:27,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:27,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:27,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:02:27,725 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:27,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 128432105, now seen corresponding path program 1 times [2024-06-28 02:02:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:27,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143815483] [2024-06-28 02:02:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:27,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:28,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:28,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143815483] [2024-06-28 02:02:28,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143815483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:28,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:28,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:28,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309037193] [2024-06-28 02:02:28,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:28,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:28,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:28,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:28,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 440 transitions, 6124 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:28,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:28,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:28,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:31,378 INFO L124 PetriNetUnfolderBase]: 8547/14047 cut-off events. [2024-06-28 02:02:31,378 INFO L125 PetriNetUnfolderBase]: For 490512/490512 co-relation queries the response was YES. [2024-06-28 02:02:31,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97322 conditions, 14047 events. 8547/14047 cut-off events. For 490512/490512 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 103152 event pairs, 1941 based on Foata normal form. 6/13709 useless extension candidates. Maximal degree in co-relation 97173. Up to 10657 conditions per place. [2024-06-28 02:02:31,600 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 362 selfloop transitions, 125 changer transitions 0/497 dead transitions. [2024-06-28 02:02:31,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 497 transitions, 7944 flow [2024-06-28 02:02:31,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:02:31,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 02:02:31,601 INFO L175 Difference]: Start difference. First operand has 316 places, 440 transitions, 6124 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:02:31,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 497 transitions, 7944 flow [2024-06-28 02:02:33,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 497 transitions, 7839 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:33,119 INFO L231 Difference]: Finished difference. Result has 320 places, 451 transitions, 6565 flow [2024-06-28 02:02:33,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6019, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6565, PETRI_PLACES=320, PETRI_TRANSITIONS=451} [2024-06-28 02:02:33,120 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 267 predicate places. [2024-06-28 02:02:33,120 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 451 transitions, 6565 flow [2024-06-28 02:02:33,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:33,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:33,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:02:33,120 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:33,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash 132156755, now seen corresponding path program 2 times [2024-06-28 02:02:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806943617] [2024-06-28 02:02:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:33,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806943617] [2024-06-28 02:02:33,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806943617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:33,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:33,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865679021] [2024-06-28 02:02:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:33,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:33,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:33,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:33,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 451 transitions, 6565 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:33,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:33,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:33,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:36,903 INFO L124 PetriNetUnfolderBase]: 8889/14413 cut-off events. [2024-06-28 02:02:36,904 INFO L125 PetriNetUnfolderBase]: For 561682/561682 co-relation queries the response was YES. [2024-06-28 02:02:37,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105651 conditions, 14413 events. 8889/14413 cut-off events. For 561682/561682 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 104524 event pairs, 1854 based on Foata normal form. 6/14102 useless extension candidates. Maximal degree in co-relation 105499. Up to 11619 conditions per place. [2024-06-28 02:02:37,181 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 393 selfloop transitions, 116 changer transitions 0/519 dead transitions. [2024-06-28 02:02:37,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 519 transitions, 8537 flow [2024-06-28 02:02:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:02:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:02:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-28 02:02:37,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-28 02:02:37,182 INFO L175 Difference]: Start difference. First operand has 320 places, 451 transitions, 6565 flow. Second operand 10 states and 252 transitions. [2024-06-28 02:02:37,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 519 transitions, 8537 flow [2024-06-28 02:02:39,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 519 transitions, 8294 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:39,284 INFO L231 Difference]: Finished difference. Result has 328 places, 463 transitions, 6896 flow [2024-06-28 02:02:39,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6352, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6896, PETRI_PLACES=328, PETRI_TRANSITIONS=463} [2024-06-28 02:02:39,285 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 275 predicate places. [2024-06-28 02:02:39,285 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 463 transitions, 6896 flow [2024-06-28 02:02:39,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:39,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:39,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:39,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:02:39,285 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:39,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2035883357, now seen corresponding path program 3 times [2024-06-28 02:02:39,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:39,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301730217] [2024-06-28 02:02:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:39,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:39,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:39,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301730217] [2024-06-28 02:02:39,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301730217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:39,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:39,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:39,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100626356] [2024-06-28 02:02:39,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:40,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:40,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:40,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:40,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:40,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 463 transitions, 6896 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:40,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:40,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:40,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:43,255 INFO L124 PetriNetUnfolderBase]: 8879/14422 cut-off events. [2024-06-28 02:02:43,255 INFO L125 PetriNetUnfolderBase]: For 556627/556627 co-relation queries the response was YES. [2024-06-28 02:02:43,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105483 conditions, 14422 events. 8879/14422 cut-off events. For 556627/556627 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 104808 event pairs, 1878 based on Foata normal form. 6/14108 useless extension candidates. Maximal degree in co-relation 105328. Up to 11616 conditions per place. [2024-06-28 02:02:43,546 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 390 selfloop transitions, 105 changer transitions 0/505 dead transitions. [2024-06-28 02:02:43,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 505 transitions, 8314 flow [2024-06-28 02:02:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:02:43,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-28 02:02:43,547 INFO L175 Difference]: Start difference. First operand has 328 places, 463 transitions, 6896 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:02:43,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 505 transitions, 8314 flow [2024-06-28 02:02:45,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 505 transitions, 8025 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:45,717 INFO L231 Difference]: Finished difference. Result has 331 places, 463 transitions, 6825 flow [2024-06-28 02:02:45,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6607, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6825, PETRI_PLACES=331, PETRI_TRANSITIONS=463} [2024-06-28 02:02:45,718 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 278 predicate places. [2024-06-28 02:02:45,718 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 463 transitions, 6825 flow [2024-06-28 02:02:45,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:45,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:45,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:45,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:02:45,719 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:45,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:45,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2035883512, now seen corresponding path program 2 times [2024-06-28 02:02:45,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:45,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593897688] [2024-06-28 02:02:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:45,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593897688] [2024-06-28 02:02:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593897688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:46,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338830741] [2024-06-28 02:02:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:46,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:46,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 463 transitions, 6825 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:46,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:46,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:46,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:50,345 INFO L124 PetriNetUnfolderBase]: 8911/14384 cut-off events. [2024-06-28 02:02:50,345 INFO L125 PetriNetUnfolderBase]: For 548455/548455 co-relation queries the response was YES. [2024-06-28 02:02:50,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105201 conditions, 14384 events. 8911/14384 cut-off events. For 548455/548455 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 103364 event pairs, 1986 based on Foata normal form. 1/14136 useless extension candidates. Maximal degree in co-relation 105044. Up to 12886 conditions per place. [2024-06-28 02:02:50,758 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 457 selfloop transitions, 43 changer transitions 0/510 dead transitions. [2024-06-28 02:02:50,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 510 transitions, 8361 flow [2024-06-28 02:02:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 02:02:50,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-28 02:02:50,759 INFO L175 Difference]: Start difference. First operand has 331 places, 463 transitions, 6825 flow. Second operand 8 states and 186 transitions. [2024-06-28 02:02:50,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 510 transitions, 8361 flow [2024-06-28 02:02:52,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 510 transitions, 8151 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:02:52,469 INFO L231 Difference]: Finished difference. Result has 333 places, 478 transitions, 7139 flow [2024-06-28 02:02:52,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7139, PETRI_PLACES=333, PETRI_TRANSITIONS=478} [2024-06-28 02:02:52,470 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 280 predicate places. [2024-06-28 02:02:52,470 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 478 transitions, 7139 flow [2024-06-28 02:02:52,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:52,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:52,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:52,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:02:52,470 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:52,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash 435843561, now seen corresponding path program 4 times [2024-06-28 02:02:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332575248] [2024-06-28 02:02:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332575248] [2024-06-28 02:02:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332575248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866276799] [2024-06-28 02:02:53,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:53,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:53,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:53,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:53,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:53,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:02:53,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 478 transitions, 7139 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:53,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:53,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:02:53,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:56,876 INFO L124 PetriNetUnfolderBase]: 9021/14632 cut-off events. [2024-06-28 02:02:56,876 INFO L125 PetriNetUnfolderBase]: For 580121/580121 co-relation queries the response was YES. [2024-06-28 02:02:57,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107306 conditions, 14632 events. 9021/14632 cut-off events. For 580121/580121 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 106483 event pairs, 1931 based on Foata normal form. 6/14302 useless extension candidates. Maximal degree in co-relation 107147. Up to 11887 conditions per place. [2024-06-28 02:02:57,092 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 405 selfloop transitions, 107 changer transitions 0/522 dead transitions. [2024-06-28 02:02:57,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 522 transitions, 8707 flow [2024-06-28 02:02:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:02:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:02:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:02:57,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 02:02:57,093 INFO L175 Difference]: Start difference. First operand has 333 places, 478 transitions, 7139 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:02:57,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 522 transitions, 8707 flow [2024-06-28 02:02:59,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 522 transitions, 8356 flow, removed 151 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:59,260 INFO L231 Difference]: Finished difference. Result has 338 places, 483 transitions, 7200 flow [2024-06-28 02:02:59,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6788, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7200, PETRI_PLACES=338, PETRI_TRANSITIONS=483} [2024-06-28 02:02:59,260 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 285 predicate places. [2024-06-28 02:02:59,260 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 483 transitions, 7200 flow [2024-06-28 02:02:59,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:59,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:59,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:59,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:02:59,261 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:59,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash 435849141, now seen corresponding path program 5 times [2024-06-28 02:02:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166990872] [2024-06-28 02:02:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166990872] [2024-06-28 02:03:00,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166990872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:00,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:00,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:03:00,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032251510] [2024-06-28 02:03:00,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:00,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:03:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:03:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:03:00,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:03:00,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 483 transitions, 7200 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:00,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:00,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:03:00,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:03,832 INFO L124 PetriNetUnfolderBase]: 9123/14913 cut-off events. [2024-06-28 02:03:03,833 INFO L125 PetriNetUnfolderBase]: For 605768/605768 co-relation queries the response was YES. [2024-06-28 02:03:03,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110552 conditions, 14913 events. 9123/14913 cut-off events. For 605768/605768 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 109982 event pairs, 2069 based on Foata normal form. 6/14553 useless extension candidates. Maximal degree in co-relation 110391. Up to 11953 conditions per place. [2024-06-28 02:03:04,077 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 411 selfloop transitions, 102 changer transitions 0/523 dead transitions. [2024-06-28 02:03:04,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 523 transitions, 8739 flow [2024-06-28 02:03:04,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 02:03:04,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-06-28 02:03:04,079 INFO L175 Difference]: Start difference. First operand has 338 places, 483 transitions, 7200 flow. Second operand 7 states and 179 transitions. [2024-06-28 02:03:04,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 523 transitions, 8739 flow [2024-06-28 02:03:06,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 523 transitions, 8419 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:06,320 INFO L231 Difference]: Finished difference. Result has 340 places, 487 transitions, 7204 flow [2024-06-28 02:03:06,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6886, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7204, PETRI_PLACES=340, PETRI_TRANSITIONS=487} [2024-06-28 02:03:06,320 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 287 predicate places. [2024-06-28 02:03:06,321 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 487 transitions, 7204 flow [2024-06-28 02:03:06,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:06,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:06,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:06,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:03:06,321 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:06,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:06,321 INFO L85 PathProgramCache]: Analyzing trace with hash 685194076, now seen corresponding path program 3 times [2024-06-28 02:03:06,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:06,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783266281] [2024-06-28 02:03:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:06,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783266281] [2024-06-28 02:03:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783266281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:07,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:07,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:03:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133791239] [2024-06-28 02:03:07,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:07,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:03:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:03:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:03:07,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:03:07,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 487 transitions, 7204 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:07,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:07,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:03:07,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:11,138 INFO L124 PetriNetUnfolderBase]: 9120/15278 cut-off events. [2024-06-28 02:03:11,138 INFO L125 PetriNetUnfolderBase]: For 602535/602535 co-relation queries the response was YES. [2024-06-28 02:03:11,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110022 conditions, 15278 events. 9120/15278 cut-off events. For 602535/602535 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 115743 event pairs, 2244 based on Foata normal form. 1/14830 useless extension candidates. Maximal degree in co-relation 109860. Up to 13168 conditions per place. [2024-06-28 02:03:11,428 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 475 selfloop transitions, 26 changer transitions 0/511 dead transitions. [2024-06-28 02:03:11,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 511 transitions, 8298 flow [2024-06-28 02:03:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:03:11,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 02:03:11,429 INFO L175 Difference]: Start difference. First operand has 340 places, 487 transitions, 7204 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:03:11,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 511 transitions, 8298 flow [2024-06-28 02:03:14,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 511 transitions, 8002 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:14,007 INFO L231 Difference]: Finished difference. Result has 341 places, 487 transitions, 6974 flow [2024-06-28 02:03:14,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6908, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6974, PETRI_PLACES=341, PETRI_TRANSITIONS=487} [2024-06-28 02:03:14,007 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 288 predicate places. [2024-06-28 02:03:14,007 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 487 transitions, 6974 flow [2024-06-28 02:03:14,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:14,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:14,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:14,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:03:14,008 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:14,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash 444094521, now seen corresponding path program 6 times [2024-06-28 02:03:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309116666] [2024-06-28 02:03:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:14,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:14,673 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 02:03:14,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309116666] [2024-06-28 02:03:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309116666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:14,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:14,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804923744] [2024-06-28 02:03:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:14,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:14,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:14,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:03:14,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 487 transitions, 6974 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:14,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:14,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:03:14,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:18,350 INFO L124 PetriNetUnfolderBase]: 9182/14984 cut-off events. [2024-06-28 02:03:18,350 INFO L125 PetriNetUnfolderBase]: For 614160/614160 co-relation queries the response was YES. [2024-06-28 02:03:18,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108808 conditions, 14984 events. 9182/14984 cut-off events. For 614160/614160 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 110745 event pairs, 2400 based on Foata normal form. 6/14666 useless extension candidates. Maximal degree in co-relation 108647. Up to 13083 conditions per place. [2024-06-28 02:03:18,576 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 462 selfloop transitions, 44 changer transitions 0/516 dead transitions. [2024-06-28 02:03:18,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 516 transitions, 8252 flow [2024-06-28 02:03:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:03:18,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 02:03:18,578 INFO L175 Difference]: Start difference. First operand has 341 places, 487 transitions, 6974 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:03:18,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 516 transitions, 8252 flow [2024-06-28 02:03:21,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 516 transitions, 8196 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:21,076 INFO L231 Difference]: Finished difference. Result has 343 places, 491 transitions, 7131 flow [2024-06-28 02:03:21,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6918, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7131, PETRI_PLACES=343, PETRI_TRANSITIONS=491} [2024-06-28 02:03:21,077 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 290 predicate places. [2024-06-28 02:03:21,077 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 491 transitions, 7131 flow [2024-06-28 02:03:21,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:21,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:21,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:21,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:03:21,077 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:21,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash -563691478, now seen corresponding path program 1 times [2024-06-28 02:03:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855054668] [2024-06-28 02:03:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:21,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855054668] [2024-06-28 02:03:21,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855054668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:21,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:21,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356940740] [2024-06-28 02:03:21,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:21,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:22,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:03:22,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 491 transitions, 7131 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:22,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:22,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:03:22,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:25,660 INFO L124 PetriNetUnfolderBase]: 9245/15130 cut-off events. [2024-06-28 02:03:25,661 INFO L125 PetriNetUnfolderBase]: For 613937/613937 co-relation queries the response was YES. [2024-06-28 02:03:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110129 conditions, 15130 events. 9245/15130 cut-off events. For 613937/613937 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 112430 event pairs, 2375 based on Foata normal form. 4/14794 useless extension candidates. Maximal degree in co-relation 109968. Up to 12995 conditions per place. [2024-06-28 02:03:25,927 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 461 selfloop transitions, 50 changer transitions 0/521 dead transitions. [2024-06-28 02:03:25,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 521 transitions, 8437 flow [2024-06-28 02:03:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 02:03:25,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:03:25,928 INFO L175 Difference]: Start difference. First operand has 343 places, 491 transitions, 7131 flow. Second operand 6 states and 150 transitions. [2024-06-28 02:03:25,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 521 transitions, 8437 flow