./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix002.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/mix002.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/mix002.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix002.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 01:16:15,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:16:15,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:16:15,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:16:15,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:16:15,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:16:15,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:16:15,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:16:15,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:16:15,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:16:15,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:16:15,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:16:15,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:16:15,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:16:15,663 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:16:15,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:16:15,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:16:15,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:16:15,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:16:15,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:16:15,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:16:15,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:16:15,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:16:15,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:16:15,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:16:15,665 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:16:15,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:16:15,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:16:15,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:16:15,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:16:15,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:16:15,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:16:15,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:16:15,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:16:15,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:16:15,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:16:15,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:16:15,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:16:15,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:16:15,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:16:15,669 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:16:15,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:16:15,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:16:15,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:16:15,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:16:15,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:16:15,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:16:15,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:16:15,881 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:16:15,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-06-28 01:16:16,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:16:17,181 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:16:17,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-06-28 01:16:17,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ed9b264/f208be6eaa4c435aad99d6a83976943e/FLAGe9f117a90 [2024-06-28 01:16:17,218 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ed9b264/f208be6eaa4c435aad99d6a83976943e [2024-06-28 01:16:17,220 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:16:17,221 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:16:17,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix002.opt.yml/witness.yml [2024-06-28 01:16:17,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:16:17,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:16:17,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:16:17,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:16:17,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:16:17,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:16:17" (1/2) ... [2024-06-28 01:16:17,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c53f06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:16:17, skipping insertion in model container [2024-06-28 01:16:17,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:16:17" (1/2) ... [2024-06-28 01:16:17,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@475eb673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:16:17, skipping insertion in model container [2024-06-28 01:16:17,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:16:17" (2/2) ... [2024-06-28 01:16:17,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c53f06f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:17, skipping insertion in model container [2024-06-28 01:16:17,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:16:17" (2/2) ... [2024-06-28 01:16:17,406 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:16:17,551 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:16:17,553 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:16:17,553 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:16:17,553 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:16:17,553 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:16:17,554 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-06-28 01:16:17,608 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:16:17,732 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/mix002.opt.i[944,957] [2024-06-28 01:16:17,876 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:16:17,883 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:16:17,910 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/mix002.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:16:18,000 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:16:18,029 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:16:18,031 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18 WrapperNode [2024-06-28 01:16:18,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:16:18,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:16:18,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:16:18,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:16:18,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,110 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-06-28 01:16:18,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:16:18,111 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:16:18,111 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:16:18,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:16:18,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,143 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 01:16:18,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:16:18,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:16:18,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:16:18,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:16:18,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (1/1) ... [2024-06-28 01:16:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:16:18,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:16:18,246 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 01:16:18,301 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 01:16:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:16:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:16:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:16:18,316 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:16:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:16:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:16:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:16:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:16:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:16:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:16:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:16:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:16:18,319 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 01:16:18,453 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:16:18,455 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:16:18,779 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:16:18,780 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:16:18,935 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:16:18,935 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:16:18,936 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:16:18 BoogieIcfgContainer [2024-06-28 01:16:18,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:16:18,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:16:18,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:16:18,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:16:18,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:16:17" (1/4) ... [2024-06-28 01:16:18,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b119fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:16:18, skipping insertion in model container [2024-06-28 01:16:18,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:16:17" (2/4) ... [2024-06-28 01:16:18,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b119fc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:16:18, skipping insertion in model container [2024-06-28 01:16:18,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:16:18" (3/4) ... [2024-06-28 01:16:18,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b119fc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:16:18, skipping insertion in model container [2024-06-28 01:16:18,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:16:18" (4/4) ... [2024-06-28 01:16:18,945 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.opt.i [2024-06-28 01:16:18,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:16:18,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:16:18,958 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:16:19,003 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:16:19,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:16:19,093 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-28 01:16:19,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:16:19,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-06-28 01:16:19,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:16:19,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-28 01:16:19,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:16:19,110 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;@4810b083, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:16:19,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:16:19,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:16:19,114 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:16:19,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:16:19,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:19,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:16:19,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:19,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:19,121 INFO L85 PathProgramCache]: Analyzing trace with hash 374670426, now seen corresponding path program 1 times [2024-06-28 01:16:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:19,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460949605] [2024-06-28 01:16:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:19,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:20,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460949605] [2024-06-28 01:16:20,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460949605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:20,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:20,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:16:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287428180] [2024-06-28 01:16:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:16:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:20,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:16:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:16:20,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-06-28 01:16:20,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:20,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:20,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-06-28 01:16:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:21,065 INFO L124 PetriNetUnfolderBase]: 3005/5085 cut-off events. [2024-06-28 01:16:21,065 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:16:21,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 5085 events. 3005/5085 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 34696 event pairs, 2435 based on Foata normal form. 151/4810 useless extension candidates. Maximal degree in co-relation 9488. Up to 4336 conditions per place. [2024-06-28 01:16:21,092 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 40 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:16:21,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 227 flow [2024-06-28 01:16:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:16:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:16:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-28 01:16:21,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7133333333333334 [2024-06-28 01:16:21,104 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 107 transitions. [2024-06-28 01:16:21,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 227 flow [2024-06-28 01:16:21,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:16:21,108 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-06-28 01:16:21,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-28 01:16:21,112 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-28 01:16:21,112 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-06-28 01:16:21,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:21,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:21,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:21,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:16:21,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:21,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash -718942919, now seen corresponding path program 1 times [2024-06-28 01:16:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763444988] [2024-06-28 01:16:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:22,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:22,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763444988] [2024-06-28 01:16:22,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763444988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:22,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:22,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:16:22,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951357064] [2024-06-28 01:16:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:22,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:16:22,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:22,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:16:22,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:16:22,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-06-28 01:16:22,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:22,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:22,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-06-28 01:16:22,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:22,877 INFO L124 PetriNetUnfolderBase]: 3428/5193 cut-off events. [2024-06-28 01:16:22,877 INFO L125 PetriNetUnfolderBase]: For 788/788 co-relation queries the response was YES. [2024-06-28 01:16:22,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11403 conditions, 5193 events. 3428/5193 cut-off events. For 788/788 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31650 event pairs, 1817 based on Foata normal form. 3/4947 useless extension candidates. Maximal degree in co-relation 11391. Up to 4908 conditions per place. [2024-06-28 01:16:22,902 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 52 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-28 01:16:22,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 323 flow [2024-06-28 01:16:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:16:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:16:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-06-28 01:16:22,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-06-28 01:16:22,909 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 4 states and 136 transitions. [2024-06-28 01:16:22,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 323 flow [2024-06-28 01:16:22,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:16:22,912 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 181 flow [2024-06-28 01:16:22,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 01:16:22,913 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-28 01:16:22,913 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 181 flow [2024-06-28 01:16:22,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:22,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:22,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:22,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:16:22,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:22,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash -812392993, now seen corresponding path program 1 times [2024-06-28 01:16:22,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:22,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447524650] [2024-06-28 01:16:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:22,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:24,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:24,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447524650] [2024-06-28 01:16:24,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447524650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:24,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:24,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:16:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663756283] [2024-06-28 01:16:24,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:24,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:16:24,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:16:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:16:24,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:16:24,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:24,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:24,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:16:24,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:24,882 INFO L124 PetriNetUnfolderBase]: 4170/6695 cut-off events. [2024-06-28 01:16:24,882 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2024-06-28 01:16:24,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15479 conditions, 6695 events. 4170/6695 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 43460 event pairs, 2241 based on Foata normal form. 3/6272 useless extension candidates. Maximal degree in co-relation 15465. Up to 5928 conditions per place. [2024-06-28 01:16:24,926 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 64 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-28 01:16:24,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 433 flow [2024-06-28 01:16:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:16:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:16:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-28 01:16:24,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-06-28 01:16:24,930 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 181 flow. Second operand 5 states and 165 transitions. [2024-06-28 01:16:24,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 433 flow [2024-06-28 01:16:24,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:24,935 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 227 flow [2024-06-28 01:16:24,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-28 01:16:24,936 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-28 01:16:24,936 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 227 flow [2024-06-28 01:16:24,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:24,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:24,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:24,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:16:24,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:24,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash 751855820, now seen corresponding path program 1 times [2024-06-28 01:16:24,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:24,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2347455] [2024-06-28 01:16:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2347455] [2024-06-28 01:16:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2347455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:26,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:26,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:16:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800499142] [2024-06-28 01:16:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:26,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:16:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:16:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:16:26,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:16:26,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:26,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:26,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:16:26,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:27,022 INFO L124 PetriNetUnfolderBase]: 4163/6914 cut-off events. [2024-06-28 01:16:27,023 INFO L125 PetriNetUnfolderBase]: For 4792/4792 co-relation queries the response was YES. [2024-06-28 01:16:27,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16986 conditions, 6914 events. 4163/6914 cut-off events. For 4792/4792 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47195 event pairs, 2406 based on Foata normal form. 3/6465 useless extension candidates. Maximal degree in co-relation 16971. Up to 5895 conditions per place. [2024-06-28 01:16:27,055 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 75 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-28 01:16:27,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 541 flow [2024-06-28 01:16:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:16:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:16:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-28 01:16:27,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6566666666666666 [2024-06-28 01:16:27,057 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 227 flow. Second operand 6 states and 197 transitions. [2024-06-28 01:16:27,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 541 flow [2024-06-28 01:16:27,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 106 transitions, 508 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:16:27,061 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 273 flow [2024-06-28 01:16:27,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 01:16:27,062 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-28 01:16:27,062 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 273 flow [2024-06-28 01:16:27,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:27,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:27,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:27,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:16:27,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:27,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash 479800109, now seen corresponding path program 1 times [2024-06-28 01:16:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:27,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186869238] [2024-06-28 01:16:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186869238] [2024-06-28 01:16:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186869238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:27,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:27,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:16:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243561078] [2024-06-28 01:16:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:27,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:16:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:16:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:16:27,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:16:27,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:27,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:27,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:16:27,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:28,709 INFO L124 PetriNetUnfolderBase]: 5714/8585 cut-off events. [2024-06-28 01:16:28,709 INFO L125 PetriNetUnfolderBase]: For 8424/8424 co-relation queries the response was YES. [2024-06-28 01:16:28,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23584 conditions, 8585 events. 5714/8585 cut-off events. For 8424/8424 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 52230 event pairs, 2389 based on Foata normal form. 2/8213 useless extension candidates. Maximal degree in co-relation 23567. Up to 8093 conditions per place. [2024-06-28 01:16:28,755 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 64 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-06-28 01:16:28,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 495 flow [2024-06-28 01:16:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:16:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:16:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-06-28 01:16:28,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:16:28,756 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 273 flow. Second operand 5 states and 140 transitions. [2024-06-28 01:16:28,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 495 flow [2024-06-28 01:16:28,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 448 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:28,761 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 289 flow [2024-06-28 01:16:28,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-28 01:16:28,762 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-28 01:16:28,763 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 289 flow [2024-06-28 01:16:28,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:28,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:28,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:16:28,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:28,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1988903115, now seen corresponding path program 1 times [2024-06-28 01:16:28,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:28,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357669130] [2024-06-28 01:16:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:29,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:29,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357669130] [2024-06-28 01:16:29,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357669130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:29,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:16:29,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968716330] [2024-06-28 01:16:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:29,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:16:29,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:16:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:16:29,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:16:29,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 289 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:16:29,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:29,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:16:29,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:30,567 INFO L124 PetriNetUnfolderBase]: 5708/8662 cut-off events. [2024-06-28 01:16:30,567 INFO L125 PetriNetUnfolderBase]: For 11139/11139 co-relation queries the response was YES. [2024-06-28 01:16:30,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25051 conditions, 8662 events. 5708/8662 cut-off events. For 11139/11139 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 53009 event pairs, 2285 based on Foata normal form. 4/8326 useless extension candidates. Maximal degree in co-relation 25032. Up to 8039 conditions per place. [2024-06-28 01:16:30,607 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 74 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2024-06-28 01:16:30,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 567 flow [2024-06-28 01:16:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:16:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:16:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-28 01:16:30,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633333333333334 [2024-06-28 01:16:30,609 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 289 flow. Second operand 6 states and 169 transitions. [2024-06-28 01:16:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 567 flow [2024-06-28 01:16:30,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 534 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:16:30,615 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 333 flow [2024-06-28 01:16:30,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-06-28 01:16:30,617 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 01:16:30,617 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 333 flow [2024-06-28 01:16:30,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:16:30,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:30,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:30,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:16:30,617 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:30,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1987789518, now seen corresponding path program 1 times [2024-06-28 01:16:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:30,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817390292] [2024-06-28 01:16:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:30,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:30,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817390292] [2024-06-28 01:16:30,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817390292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:30,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:30,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:16:30,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073746289] [2024-06-28 01:16:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:30,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:16:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:30,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:16:30,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:16:30,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 50 [2024-06-28 01:16:30,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 01:16:30,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:30,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 50 [2024-06-28 01:16:30,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:30,927 INFO L124 PetriNetUnfolderBase]: 1523/2949 cut-off events. [2024-06-28 01:16:30,928 INFO L125 PetriNetUnfolderBase]: For 5796/6120 co-relation queries the response was YES. [2024-06-28 01:16:30,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7559 conditions, 2949 events. 1523/2949 cut-off events. For 5796/6120 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 22158 event pairs, 339 based on Foata normal form. 2/2703 useless extension candidates. Maximal degree in co-relation 7540. Up to 1833 conditions per place. [2024-06-28 01:16:30,945 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 26 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2024-06-28 01:16:30,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 364 flow [2024-06-28 01:16:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:16:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:16:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-28 01:16:30,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7533333333333333 [2024-06-28 01:16:30,946 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 333 flow. Second operand 3 states and 113 transitions. [2024-06-28 01:16:30,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 364 flow [2024-06-28 01:16:30,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 332 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:30,949 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 264 flow [2024-06-28 01:16:30,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 01:16:30,950 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-28 01:16:30,950 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 264 flow [2024-06-28 01:16:30,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 01:16:30,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:30,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:30,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:16:30,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:30,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:30,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1518827596, now seen corresponding path program 1 times [2024-06-28 01:16:30,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:30,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692466401] [2024-06-28 01:16:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:30,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:31,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:31,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692466401] [2024-06-28 01:16:31,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692466401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:31,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:31,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:16:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847740334] [2024-06-28 01:16:31,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:31,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:16:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:16:31,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:16:31,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:16:31,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 264 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 01:16:31,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:31,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:16:31,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:32,708 INFO L124 PetriNetUnfolderBase]: 5695/8331 cut-off events. [2024-06-28 01:16:32,709 INFO L125 PetriNetUnfolderBase]: For 17747/17753 co-relation queries the response was YES. [2024-06-28 01:16:32,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24773 conditions, 8331 events. 5695/8331 cut-off events. For 17747/17753 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 48132 event pairs, 2299 based on Foata normal form. 6/8331 useless extension candidates. Maximal degree in co-relation 24754. Up to 8056 conditions per place. [2024-06-28 01:16:32,755 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 75 selfloop transitions, 16 changer transitions 1/104 dead transitions. [2024-06-28 01:16:32,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 600 flow [2024-06-28 01:16:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:16:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:16:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-28 01:16:32,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-06-28 01:16:32,757 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 264 flow. Second operand 6 states and 166 transitions. [2024-06-28 01:16:32,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 600 flow [2024-06-28 01:16:32,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 104 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:32,765 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 338 flow [2024-06-28 01:16:32,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-28 01:16:32,767 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-28 01:16:32,767 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 338 flow [2024-06-28 01:16:32,767 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 01:16:32,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:32,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:32,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:16:32,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:32,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:32,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2080781490, now seen corresponding path program 2 times [2024-06-28 01:16:32,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:32,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519107665] [2024-06-28 01:16:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:32,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:33,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519107665] [2024-06-28 01:16:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519107665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:33,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:33,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:16:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435113261] [2024-06-28 01:16:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:33,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:16:33,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:16:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:16:33,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:16:33,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 338 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 01:16:33,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:33,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:16:33,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:34,580 INFO L124 PetriNetUnfolderBase]: 5690/8325 cut-off events. [2024-06-28 01:16:34,581 INFO L125 PetriNetUnfolderBase]: For 20652/20667 co-relation queries the response was YES. [2024-06-28 01:16:34,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25877 conditions, 8325 events. 5690/8325 cut-off events. For 20652/20667 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 48044 event pairs, 2302 based on Foata normal form. 12/8330 useless extension candidates. Maximal degree in co-relation 25856. Up to 8051 conditions per place. [2024-06-28 01:16:34,627 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 69 selfloop transitions, 16 changer transitions 2/99 dead transitions. [2024-06-28 01:16:34,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 580 flow [2024-06-28 01:16:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:16:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:16:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 01:16:34,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366666666666666 [2024-06-28 01:16:34,629 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 338 flow. Second operand 6 states and 161 transitions. [2024-06-28 01:16:34,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 580 flow [2024-06-28 01:16:34,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 99 transitions, 544 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:34,640 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 342 flow [2024-06-28 01:16:34,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-06-28 01:16:34,641 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-06-28 01:16:34,641 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 342 flow [2024-06-28 01:16:34,641 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 01:16:34,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:34,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:34,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:16:34,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:34,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1975535739, now seen corresponding path program 1 times [2024-06-28 01:16:34,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355623254] [2024-06-28 01:16:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:36,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355623254] [2024-06-28 01:16:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355623254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:36,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:36,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:16:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269066780] [2024-06-28 01:16:36,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:16:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:36,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:16:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:16:36,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:16:36,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:36,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:36,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:16:36,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:37,645 INFO L124 PetriNetUnfolderBase]: 5001/8274 cut-off events. [2024-06-28 01:16:37,646 INFO L125 PetriNetUnfolderBase]: For 23257/23305 co-relation queries the response was YES. [2024-06-28 01:16:37,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24179 conditions, 8274 events. 5001/8274 cut-off events. For 23257/23305 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 56271 event pairs, 2265 based on Foata normal form. 14/7966 useless extension candidates. Maximal degree in co-relation 24157. Up to 7001 conditions per place. [2024-06-28 01:16:37,688 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 102 selfloop transitions, 18 changer transitions 1/137 dead transitions. [2024-06-28 01:16:37,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 137 transitions, 760 flow [2024-06-28 01:16:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:16:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:16:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 243 transitions. [2024-06-28 01:16:37,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075 [2024-06-28 01:16:37,691 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 342 flow. Second operand 8 states and 243 transitions. [2024-06-28 01:16:37,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 137 transitions, 760 flow [2024-06-28 01:16:37,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 137 transitions, 720 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:37,701 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 381 flow [2024-06-28 01:16:37,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-06-28 01:16:37,703 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-28 01:16:37,703 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 381 flow [2024-06-28 01:16:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:37,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:37,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:37,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:16:37,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:37,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash -161162894, now seen corresponding path program 1 times [2024-06-28 01:16:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665908471] [2024-06-28 01:16:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665908471] [2024-06-28 01:16:38,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665908471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:38,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:38,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:16:38,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766051580] [2024-06-28 01:16:38,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:38,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:16:38,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:16:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:16:38,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:16:38,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 381 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 01:16:38,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:38,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:16:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:39,741 INFO L124 PetriNetUnfolderBase]: 6000/8666 cut-off events. [2024-06-28 01:16:39,741 INFO L125 PetriNetUnfolderBase]: For 29240/29246 co-relation queries the response was YES. [2024-06-28 01:16:39,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28620 conditions, 8666 events. 6000/8666 cut-off events. For 29240/29246 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48941 event pairs, 1811 based on Foata normal form. 6/8666 useless extension candidates. Maximal degree in co-relation 28596. Up to 8370 conditions per place. [2024-06-28 01:16:39,791 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 87 selfloop transitions, 24 changer transitions 5/126 dead transitions. [2024-06-28 01:16:39,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 126 transitions, 813 flow [2024-06-28 01:16:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:16:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:16:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 01:16:39,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:16:39,794 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 381 flow. Second operand 7 states and 189 transitions. [2024-06-28 01:16:39,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 126 transitions, 813 flow [2024-06-28 01:16:39,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 126 transitions, 760 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:39,805 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 444 flow [2024-06-28 01:16:39,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-06-28 01:16:39,805 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-28 01:16:39,806 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 444 flow [2024-06-28 01:16:39,806 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 01:16:39,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:39,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:39,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:16:39,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:39,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash -160983156, now seen corresponding path program 1 times [2024-06-28 01:16:39,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:39,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714146472] [2024-06-28 01:16:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:39,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:40,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:40,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714146472] [2024-06-28 01:16:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714146472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:40,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:40,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:16:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130058218] [2024-06-28 01:16:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:40,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:16:40,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:16:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:16:40,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:16:40,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 444 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 01:16:40,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:40,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:16:40,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:41,701 INFO L124 PetriNetUnfolderBase]: 5043/7425 cut-off events. [2024-06-28 01:16:41,702 INFO L125 PetriNetUnfolderBase]: For 32555/32561 co-relation queries the response was YES. [2024-06-28 01:16:41,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25785 conditions, 7425 events. 5043/7425 cut-off events. For 32555/32561 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42303 event pairs, 1507 based on Foata normal form. 5/7421 useless extension candidates. Maximal degree in co-relation 25759. Up to 7002 conditions per place. [2024-06-28 01:16:41,734 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 90 selfloop transitions, 23 changer transitions 0/127 dead transitions. [2024-06-28 01:16:41,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 127 transitions, 868 flow [2024-06-28 01:16:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:16:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:16:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:16:41,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457142857142857 [2024-06-28 01:16:41,735 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 444 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:16:41,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 127 transitions, 868 flow [2024-06-28 01:16:41,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 824 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:16:41,750 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 520 flow [2024-06-28 01:16:41,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-06-28 01:16:41,751 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-28 01:16:41,751 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 520 flow [2024-06-28 01:16:41,751 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 01:16:41,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:41,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:41,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:16:41,751 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:41,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash -160983404, now seen corresponding path program 2 times [2024-06-28 01:16:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:41,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858707131] [2024-06-28 01:16:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:41,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858707131] [2024-06-28 01:16:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858707131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:42,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:42,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:16:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098414772] [2024-06-28 01:16:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:42,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:16:42,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:42,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:16:42,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:16:42,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:16:42,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 520 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 01:16:42,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:42,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:16:42,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:43,685 INFO L124 PetriNetUnfolderBase]: 5314/7699 cut-off events. [2024-06-28 01:16:43,685 INFO L125 PetriNetUnfolderBase]: For 39247/39250 co-relation queries the response was YES. [2024-06-28 01:16:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28278 conditions, 7699 events. 5314/7699 cut-off events. For 39247/39250 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42741 event pairs, 1586 based on Foata normal form. 4/7697 useless extension candidates. Maximal degree in co-relation 28250. Up to 7423 conditions per place. [2024-06-28 01:16:43,724 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 91 selfloop transitions, 26 changer transitions 0/127 dead transitions. [2024-06-28 01:16:43,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 920 flow [2024-06-28 01:16:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:16:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:16:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:16:43,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:16:43,728 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 520 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:16:43,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 920 flow [2024-06-28 01:16:43,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 127 transitions, 882 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:16:43,757 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 572 flow [2024-06-28 01:16:43,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=572, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2024-06-28 01:16:43,757 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-28 01:16:43,757 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 572 flow [2024-06-28 01:16:43,758 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 01:16:43,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:43,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:43,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:16:43,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:43,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:43,759 INFO L85 PathProgramCache]: Analyzing trace with hash -93718136, now seen corresponding path program 2 times [2024-06-28 01:16:43,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684874589] [2024-06-28 01:16:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:44,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684874589] [2024-06-28 01:16:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684874589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:44,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:44,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:16:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188565095] [2024-06-28 01:16:44,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:44,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:16:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:16:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:16:44,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:16:44,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 572 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 01:16:44,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:44,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:16:44,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:45,671 INFO L124 PetriNetUnfolderBase]: 5112/7525 cut-off events. [2024-06-28 01:16:45,671 INFO L125 PetriNetUnfolderBase]: For 42824/42836 co-relation queries the response was YES. [2024-06-28 01:16:45,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27916 conditions, 7525 events. 5112/7525 cut-off events. For 42824/42836 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42810 event pairs, 1496 based on Foata normal form. 12/7530 useless extension candidates. Maximal degree in co-relation 27886. Up to 7064 conditions per place. [2024-06-28 01:16:45,716 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 87 selfloop transitions, 27 changer transitions 0/129 dead transitions. [2024-06-28 01:16:45,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 972 flow [2024-06-28 01:16:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:16:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:16:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:16:45,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-28 01:16:45,718 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 572 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:16:45,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 972 flow [2024-06-28 01:16:45,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 918 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:45,752 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 616 flow [2024-06-28 01:16:45,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=616, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2024-06-28 01:16:45,752 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-28 01:16:45,753 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 616 flow [2024-06-28 01:16:45,753 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 01:16:45,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:45,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:45,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:16:45,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:45,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1049442342, now seen corresponding path program 3 times [2024-06-28 01:16:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491290778] [2024-06-28 01:16:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:46,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:46,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491290778] [2024-06-28 01:16:46,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491290778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:46,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:16:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298945946] [2024-06-28 01:16:46,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:46,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:16:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:16:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:16:46,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:16:46,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 616 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 01:16:46,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:46,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:16:46,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:47,678 INFO L124 PetriNetUnfolderBase]: 5355/7772 cut-off events. [2024-06-28 01:16:47,678 INFO L125 PetriNetUnfolderBase]: For 47525/47540 co-relation queries the response was YES. [2024-06-28 01:16:47,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29333 conditions, 7772 events. 5355/7772 cut-off events. For 47525/47540 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 43204 event pairs, 1600 based on Foata normal form. 9/7772 useless extension candidates. Maximal degree in co-relation 29302. Up to 7482 conditions per place. [2024-06-28 01:16:47,723 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 89 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-28 01:16:47,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 125 transitions, 926 flow [2024-06-28 01:16:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:16:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:16:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:16:47,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:16:47,725 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 616 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:16:47,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 125 transitions, 926 flow [2024-06-28 01:16:47,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 844 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:47,763 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 594 flow [2024-06-28 01:16:47,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-06-28 01:16:47,763 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-28 01:16:47,764 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 594 flow [2024-06-28 01:16:47,764 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 01:16:47,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:47,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:47,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:16:47,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:47,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1049442094, now seen corresponding path program 3 times [2024-06-28 01:16:47,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:47,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504562908] [2024-06-28 01:16:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504562908] [2024-06-28 01:16:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504562908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:48,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:16:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025485160] [2024-06-28 01:16:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:16:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:16:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:16:48,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:16:48,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 594 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 01:16:48,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:48,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:16:48,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:49,726 INFO L124 PetriNetUnfolderBase]: 5098/7505 cut-off events. [2024-06-28 01:16:49,727 INFO L125 PetriNetUnfolderBase]: For 49767/49776 co-relation queries the response was YES. [2024-06-28 01:16:49,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28203 conditions, 7505 events. 5098/7505 cut-off events. For 49767/49776 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42742 event pairs, 1494 based on Foata normal form. 10/7508 useless extension candidates. Maximal degree in co-relation 28171. Up to 7051 conditions per place. [2024-06-28 01:16:49,775 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 87 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-28 01:16:49,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 128 transitions, 906 flow [2024-06-28 01:16:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:16:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:16:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:16:49,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-28 01:16:49,777 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 594 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:16:49,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 128 transitions, 906 flow [2024-06-28 01:16:49,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 812 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:49,810 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 560 flow [2024-06-28 01:16:49,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-06-28 01:16:49,811 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-28 01:16:49,811 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 560 flow [2024-06-28 01:16:49,811 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 01:16:49,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:49,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:49,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:16:49,811 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:49,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -995989092, now seen corresponding path program 1 times [2024-06-28 01:16:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:49,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305186471] [2024-06-28 01:16:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:50,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:50,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305186471] [2024-06-28 01:16:50,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305186471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:50,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:50,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:16:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991091514] [2024-06-28 01:16:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:50,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:16:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:16:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:16:50,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:16:50,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 560 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:50,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:50,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:16:50,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:51,336 INFO L124 PetriNetUnfolderBase]: 3872/6797 cut-off events. [2024-06-28 01:16:51,336 INFO L125 PetriNetUnfolderBase]: For 47482/47521 co-relation queries the response was YES. [2024-06-28 01:16:51,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23837 conditions, 6797 events. 3872/6797 cut-off events. For 47482/47521 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 48594 event pairs, 1689 based on Foata normal form. 8/6618 useless extension candidates. Maximal degree in co-relation 23804. Up to 5601 conditions per place. [2024-06-28 01:16:51,374 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 77 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2024-06-28 01:16:51,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 111 transitions, 812 flow [2024-06-28 01:16:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:16:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:16:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-06-28 01:16:51,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.544 [2024-06-28 01:16:51,376 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 560 flow. Second operand 5 states and 136 transitions. [2024-06-28 01:16:51,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 111 transitions, 812 flow [2024-06-28 01:16:51,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 733 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:51,394 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 572 flow [2024-06-28 01:16:51,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2024-06-28 01:16:51,395 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-06-28 01:16:51,395 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 572 flow [2024-06-28 01:16:51,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:51,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:51,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:16:51,395 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:51,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash -701086591, now seen corresponding path program 1 times [2024-06-28 01:16:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515659104] [2024-06-28 01:16:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:52,196 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 01:16:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515659104] [2024-06-28 01:16:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515659104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:52,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:16:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973779565] [2024-06-28 01:16:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:16:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:16:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:16:52,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:16:52,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 572 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 01:16:52,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:52,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:16:52,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:53,451 INFO L124 PetriNetUnfolderBase]: 5370/8555 cut-off events. [2024-06-28 01:16:53,451 INFO L125 PetriNetUnfolderBase]: For 60233/60236 co-relation queries the response was YES. [2024-06-28 01:16:53,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31647 conditions, 8555 events. 5370/8555 cut-off events. For 60233/60236 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 54121 event pairs, 1786 based on Foata normal form. 4/8293 useless extension candidates. Maximal degree in co-relation 31612. Up to 7426 conditions per place. [2024-06-28 01:16:53,501 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 110 selfloop transitions, 37 changer transitions 0/157 dead transitions. [2024-06-28 01:16:53,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 157 transitions, 1132 flow [2024-06-28 01:16:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:16:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:16:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 01:16:53,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-06-28 01:16:53,503 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 572 flow. Second operand 8 states and 212 transitions. [2024-06-28 01:16:53,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 157 transitions, 1132 flow [2024-06-28 01:16:53,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 157 transitions, 1107 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:53,530 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 703 flow [2024-06-28 01:16:53,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=703, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2024-06-28 01:16:53,530 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-28 01:16:53,530 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 703 flow [2024-06-28 01:16:53,531 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 01:16:53,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:53,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:53,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:16:53,531 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:53,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -701081011, now seen corresponding path program 2 times [2024-06-28 01:16:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955694482] [2024-06-28 01:16:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:53,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:54,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955694482] [2024-06-28 01:16:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955694482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:54,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:54,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:16:54,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439685237] [2024-06-28 01:16:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:16:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:16:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:16:54,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:16:54,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 703 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 01:16:54,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:54,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:16:54,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:55,742 INFO L124 PetriNetUnfolderBase]: 5393/8575 cut-off events. [2024-06-28 01:16:55,743 INFO L125 PetriNetUnfolderBase]: For 68775/68778 co-relation queries the response was YES. [2024-06-28 01:16:55,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33161 conditions, 8575 events. 5393/8575 cut-off events. For 68775/68778 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 54192 event pairs, 1785 based on Foata normal form. 4/8317 useless extension candidates. Maximal degree in co-relation 33124. Up to 7450 conditions per place. [2024-06-28 01:16:55,797 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 109 selfloop transitions, 38 changer transitions 0/157 dead transitions. [2024-06-28 01:16:55,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 157 transitions, 1231 flow [2024-06-28 01:16:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:16:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:16:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:16:55,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:16:55,799 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 703 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:16:55,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 157 transitions, 1231 flow [2024-06-28 01:16:55,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 157 transitions, 1146 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:55,836 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 742 flow [2024-06-28 01:16:55,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-06-28 01:16:55,836 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-28 01:16:55,837 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 742 flow [2024-06-28 01:16:55,837 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 01:16:55,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:55,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:55,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:16:55,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:55,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -701080794, now seen corresponding path program 1 times [2024-06-28 01:16:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035016181] [2024-06-28 01:16:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035016181] [2024-06-28 01:16:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035016181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:56,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:16:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548461814] [2024-06-28 01:16:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:16:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:16:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:16:56,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:16:56,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 742 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 01:16:56,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:56,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:16:56,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:58,045 INFO L124 PetriNetUnfolderBase]: 5439/8668 cut-off events. [2024-06-28 01:16:58,045 INFO L125 PetriNetUnfolderBase]: For 74486/74489 co-relation queries the response was YES. [2024-06-28 01:16:58,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33602 conditions, 8668 events. 5439/8668 cut-off events. For 74486/74489 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 54882 event pairs, 1624 based on Foata normal form. 4/8403 useless extension candidates. Maximal degree in co-relation 33563. Up to 7317 conditions per place. [2024-06-28 01:16:58,104 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 115 selfloop transitions, 42 changer transitions 0/167 dead transitions. [2024-06-28 01:16:58,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 1334 flow [2024-06-28 01:16:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:16:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:16:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:16:58,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:16:58,106 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 742 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:16:58,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 1334 flow [2024-06-28 01:16:58,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 167 transitions, 1259 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:58,146 INFO L231 Difference]: Finished difference. Result has 104 places, 112 transitions, 837 flow [2024-06-28 01:16:58,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=837, PETRI_PLACES=104, PETRI_TRANSITIONS=112} [2024-06-28 01:16:58,147 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-28 01:16:58,147 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 112 transitions, 837 flow [2024-06-28 01:16:58,147 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 01:16:58,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:58,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:16:58,147 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:16:58,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1984065341, now seen corresponding path program 3 times [2024-06-28 01:16:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:58,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915379034] [2024-06-28 01:16:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:58,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:58,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915379034] [2024-06-28 01:16:58,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915379034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:58,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:58,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:16:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140454753] [2024-06-28 01:16:58,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:58,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:16:58,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:58,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:16:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:16:59,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:16:59,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 112 transitions, 837 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 01:16:59,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:59,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:16:59,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:00,204 INFO L124 PetriNetUnfolderBase]: 5462/8686 cut-off events. [2024-06-28 01:17:00,204 INFO L125 PetriNetUnfolderBase]: For 83167/83170 co-relation queries the response was YES. [2024-06-28 01:17:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34975 conditions, 8686 events. 5462/8686 cut-off events. For 83167/83170 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 54973 event pairs, 1756 based on Foata normal form. 4/8423 useless extension candidates. Maximal degree in co-relation 34935. Up to 7538 conditions per place. [2024-06-28 01:17:00,256 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 113 selfloop transitions, 40 changer transitions 0/163 dead transitions. [2024-06-28 01:17:00,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 163 transitions, 1370 flow [2024-06-28 01:17:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:17:00,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:17:00,258 INFO L175 Difference]: Start difference. First operand has 104 places, 112 transitions, 837 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:17:00,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 163 transitions, 1370 flow [2024-06-28 01:17:00,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 163 transitions, 1299 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:00,304 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 887 flow [2024-06-28 01:17:00,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=887, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2024-06-28 01:17:00,304 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-28 01:17:00,304 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 887 flow [2024-06-28 01:17:00,305 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 01:17:00,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:00,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:00,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:17:00,305 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:00,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash -695509164, now seen corresponding path program 2 times [2024-06-28 01:17:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:00,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348529463] [2024-06-28 01:17:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:00,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:01,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:01,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348529463] [2024-06-28 01:17:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348529463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:01,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:01,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:01,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316297358] [2024-06-28 01:17:01,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:01,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:01,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:01,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:01,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:01,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:01,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 887 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 01:17:01,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:01,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:01,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:02,518 INFO L124 PetriNetUnfolderBase]: 5564/8851 cut-off events. [2024-06-28 01:17:02,519 INFO L125 PetriNetUnfolderBase]: For 90952/90955 co-relation queries the response was YES. [2024-06-28 01:17:02,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36145 conditions, 8851 events. 5564/8851 cut-off events. For 90952/90955 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 56043 event pairs, 1637 based on Foata normal form. 4/8584 useless extension candidates. Maximal degree in co-relation 36103. Up to 7435 conditions per place. [2024-06-28 01:17:02,585 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 119 selfloop transitions, 46 changer transitions 0/175 dead transitions. [2024-06-28 01:17:02,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 175 transitions, 1577 flow [2024-06-28 01:17:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:17:02,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:17:02,587 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 887 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:17:02,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 175 transitions, 1577 flow [2024-06-28 01:17:02,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 175 transitions, 1500 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:02,632 INFO L231 Difference]: Finished difference. Result has 111 places, 121 transitions, 982 flow [2024-06-28 01:17:02,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=982, PETRI_PLACES=111, PETRI_TRANSITIONS=121} [2024-06-28 01:17:02,633 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-28 01:17:02,633 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 121 transitions, 982 flow [2024-06-28 01:17:02,633 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 01:17:02,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:02,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:02,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:17:02,635 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:02,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash -695516604, now seen corresponding path program 3 times [2024-06-28 01:17:02,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:02,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711865577] [2024-06-28 01:17:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:03,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:03,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711865577] [2024-06-28 01:17:03,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711865577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:03,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:03,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284256401] [2024-06-28 01:17:03,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:03,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:03,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:03,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:03,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:03,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:03,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 121 transitions, 982 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 01:17:03,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:03,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:03,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:04,837 INFO L124 PetriNetUnfolderBase]: 5554/8837 cut-off events. [2024-06-28 01:17:04,838 INFO L125 PetriNetUnfolderBase]: For 96947/96950 co-relation queries the response was YES. [2024-06-28 01:17:04,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36470 conditions, 8837 events. 5554/8837 cut-off events. For 96947/96950 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 56010 event pairs, 1635 based on Foata normal form. 4/8570 useless extension candidates. Maximal degree in co-relation 36427. Up to 7427 conditions per place. [2024-06-28 01:17:04,896 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 119 selfloop transitions, 45 changer transitions 0/174 dead transitions. [2024-06-28 01:17:04,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 174 transitions, 1522 flow [2024-06-28 01:17:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:17:04,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:17:04,899 INFO L175 Difference]: Start difference. First operand has 111 places, 121 transitions, 982 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:17:04,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 174 transitions, 1522 flow [2024-06-28 01:17:04,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 174 transitions, 1417 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:04,976 INFO L231 Difference]: Finished difference. Result has 115 places, 121 transitions, 975 flow [2024-06-28 01:17:04,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=975, PETRI_PLACES=115, PETRI_TRANSITIONS=121} [2024-06-28 01:17:04,976 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-28 01:17:04,977 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 121 transitions, 975 flow [2024-06-28 01:17:04,977 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 01:17:04,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:04,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:04,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:17:04,977 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:04,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1380509686, now seen corresponding path program 4 times [2024-06-28 01:17:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:04,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248594702] [2024-06-28 01:17:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:04,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248594702] [2024-06-28 01:17:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248594702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:05,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:05,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714963809] [2024-06-28 01:17:05,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:05,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:05,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 975 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 01:17:05,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:05,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:05,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:07,309 INFO L124 PetriNetUnfolderBase]: 5656/8326 cut-off events. [2024-06-28 01:17:07,309 INFO L125 PetriNetUnfolderBase]: For 105732/105744 co-relation queries the response was YES. [2024-06-28 01:17:07,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36821 conditions, 8326 events. 5656/8326 cut-off events. For 105732/105744 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47690 event pairs, 1420 based on Foata normal form. 9/8285 useless extension candidates. Maximal degree in co-relation 36777. Up to 7513 conditions per place. [2024-06-28 01:17:07,369 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 117 selfloop transitions, 51 changer transitions 0/178 dead transitions. [2024-06-28 01:17:07,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 178 transitions, 1697 flow [2024-06-28 01:17:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:17:07,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2024-06-28 01:17:07,375 INFO L175 Difference]: Start difference. First operand has 115 places, 121 transitions, 975 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:17:07,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 178 transitions, 1697 flow [2024-06-28 01:17:07,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 178 transitions, 1587 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:07,451 INFO L231 Difference]: Finished difference. Result has 116 places, 127 transitions, 1065 flow [2024-06-28 01:17:07,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1065, PETRI_PLACES=116, PETRI_TRANSITIONS=127} [2024-06-28 01:17:07,451 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-28 01:17:07,452 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 127 transitions, 1065 flow [2024-06-28 01:17:07,452 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 01:17:07,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:07,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:07,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:17:07,452 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:07,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1964015036, now seen corresponding path program 5 times [2024-06-28 01:17:07,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:07,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131645420] [2024-06-28 01:17:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:07,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:08,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:08,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131645420] [2024-06-28 01:17:08,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131645420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:08,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:08,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:08,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952139908] [2024-06-28 01:17:08,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:08,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:08,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:08,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:08,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:08,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 127 transitions, 1065 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 01:17:08,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:08,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:09,676 INFO L124 PetriNetUnfolderBase]: 5646/8312 cut-off events. [2024-06-28 01:17:09,676 INFO L125 PetriNetUnfolderBase]: For 111265/111277 co-relation queries the response was YES. [2024-06-28 01:17:09,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36989 conditions, 8312 events. 5646/8312 cut-off events. For 111265/111277 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47706 event pairs, 1418 based on Foata normal form. 9/8271 useless extension candidates. Maximal degree in co-relation 36944. Up to 7505 conditions per place. [2024-06-28 01:17:09,734 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 114 selfloop transitions, 52 changer transitions 0/176 dead transitions. [2024-06-28 01:17:09,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 176 transitions, 1607 flow [2024-06-28 01:17:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:17:09,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:17:09,736 INFO L175 Difference]: Start difference. First operand has 116 places, 127 transitions, 1065 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:17:09,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 176 transitions, 1607 flow [2024-06-28 01:17:09,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 176 transitions, 1456 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:09,829 INFO L231 Difference]: Finished difference. Result has 119 places, 127 transitions, 1026 flow [2024-06-28 01:17:09,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1026, PETRI_PLACES=119, PETRI_TRANSITIONS=127} [2024-06-28 01:17:09,830 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 01:17:09,830 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 127 transitions, 1026 flow [2024-06-28 01:17:09,830 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 01:17:09,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:09,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:09,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:17:09,830 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:09,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:09,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1954810826, now seen corresponding path program 6 times [2024-06-28 01:17:09,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:09,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853101446] [2024-06-28 01:17:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:09,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853101446] [2024-06-28 01:17:10,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853101446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:10,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:10,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841511109] [2024-06-28 01:17:10,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:10,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:10,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 1026 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 01:17:10,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:10,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:10,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:11,717 INFO L124 PetriNetUnfolderBase]: 5636/8321 cut-off events. [2024-06-28 01:17:11,717 INFO L125 PetriNetUnfolderBase]: For 115489/115501 co-relation queries the response was YES. [2024-06-28 01:17:11,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36929 conditions, 8321 events. 5636/8321 cut-off events. For 115489/115501 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 48002 event pairs, 1432 based on Foata normal form. 9/8272 useless extension candidates. Maximal degree in co-relation 36883. Up to 7497 conditions per place. [2024-06-28 01:17:11,778 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 109 selfloop transitions, 54 changer transitions 0/173 dead transitions. [2024-06-28 01:17:11,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 173 transitions, 1466 flow [2024-06-28 01:17:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:17:11,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-28 01:17:11,780 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 1026 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:17:11,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 173 transitions, 1466 flow [2024-06-28 01:17:11,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 173 transitions, 1324 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:11,893 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 1000 flow [2024-06-28 01:17:11,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1000, PETRI_PLACES=120, PETRI_TRANSITIONS=127} [2024-06-28 01:17:11,893 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2024-06-28 01:17:11,893 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 1000 flow [2024-06-28 01:17:11,894 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 01:17:11,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:11,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:11,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:17:11,894 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:11,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1964015253, now seen corresponding path program 4 times [2024-06-28 01:17:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:11,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317332300] [2024-06-28 01:17:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:11,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317332300] [2024-06-28 01:17:12,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317332300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:12,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:12,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880682544] [2024-06-28 01:17:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:12,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:12,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:12,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:12,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 127 transitions, 1000 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 01:17:12,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:12,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:12,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:13,838 INFO L124 PetriNetUnfolderBase]: 5631/8321 cut-off events. [2024-06-28 01:17:13,839 INFO L125 PetriNetUnfolderBase]: For 120740/120749 co-relation queries the response was YES. [2024-06-28 01:17:13,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37050 conditions, 8321 events. 5631/8321 cut-off events. For 120740/120749 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 48041 event pairs, 1590 based on Foata normal form. 5/8265 useless extension candidates. Maximal degree in co-relation 37003. Up to 7775 conditions per place. [2024-06-28 01:17:13,899 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 120 selfloop transitions, 40 changer transitions 0/170 dead transitions. [2024-06-28 01:17:13,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 170 transitions, 1428 flow [2024-06-28 01:17:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:17:13,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-06-28 01:17:13,901 INFO L175 Difference]: Start difference. First operand has 120 places, 127 transitions, 1000 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:17:13,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 170 transitions, 1428 flow [2024-06-28 01:17:13,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 170 transitions, 1280 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:13,991 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 940 flow [2024-06-28 01:17:13,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=940, PETRI_PLACES=120, PETRI_TRANSITIONS=127} [2024-06-28 01:17:13,991 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2024-06-28 01:17:13,992 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 940 flow [2024-06-28 01:17:13,992 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 01:17:13,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:13,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:13,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:17:13,993 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:13,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1954472213, now seen corresponding path program 1 times [2024-06-28 01:17:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:13,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991211248] [2024-06-28 01:17:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:13,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991211248] [2024-06-28 01:17:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991211248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:15,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350187762] [2024-06-28 01:17:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:15,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:15,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:15,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:15,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:17:15,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 127 transitions, 940 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:15,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:15,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:17:15,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:16,378 INFO L124 PetriNetUnfolderBase]: 4613/7508 cut-off events. [2024-06-28 01:17:16,378 INFO L125 PetriNetUnfolderBase]: For 109863/109865 co-relation queries the response was YES. [2024-06-28 01:17:16,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31606 conditions, 7508 events. 4613/7508 cut-off events. For 109863/109865 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 49327 event pairs, 1676 based on Foata normal form. 6/7389 useless extension candidates. Maximal degree in co-relation 31558. Up to 6460 conditions per place. [2024-06-28 01:17:16,418 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 134 selfloop transitions, 19 changer transitions 0/175 dead transitions. [2024-06-28 01:17:16,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 175 transitions, 1402 flow [2024-06-28 01:17:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 01:17:16,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275 [2024-06-28 01:17:16,419 INFO L175 Difference]: Start difference. First operand has 120 places, 127 transitions, 940 flow. Second operand 8 states and 211 transitions. [2024-06-28 01:17:16,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 175 transitions, 1402 flow [2024-06-28 01:17:16,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 175 transitions, 1267 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:17:16,473 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 910 flow [2024-06-28 01:17:16,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=910, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2024-06-28 01:17:16,473 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 01:17:16,473 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 910 flow [2024-06-28 01:17:16,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:16,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:16,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:16,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:17:16,474 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:16,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash -810889508, now seen corresponding path program 1 times [2024-06-28 01:17:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484917217] [2024-06-28 01:17:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:17,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484917217] [2024-06-28 01:17:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484917217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:17,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:17,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:17:17,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738160841] [2024-06-28 01:17:17,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:17,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:17:17,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:17,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:17:17,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:17:17,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:17:17,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 910 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:17,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:17,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:17:17,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:18,390 INFO L124 PetriNetUnfolderBase]: 4087/6894 cut-off events. [2024-06-28 01:17:18,391 INFO L125 PetriNetUnfolderBase]: For 113953/114009 co-relation queries the response was YES. [2024-06-28 01:17:18,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29811 conditions, 6894 events. 4087/6894 cut-off events. For 113953/114009 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 46886 event pairs, 1615 based on Foata normal form. 16/6795 useless extension candidates. Maximal degree in co-relation 29762. Up to 5743 conditions per place. [2024-06-28 01:17:18,437 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 104 selfloop transitions, 12 changer transitions 0/155 dead transitions. [2024-06-28 01:17:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 155 transitions, 1218 flow [2024-06-28 01:17:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 01:17:18,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:17:18,439 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 910 flow. Second operand 6 states and 162 transitions. [2024-06-28 01:17:18,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 155 transitions, 1218 flow [2024-06-28 01:17:18,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 155 transitions, 1153 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:18,525 INFO L231 Difference]: Finished difference. Result has 120 places, 135 transitions, 909 flow [2024-06-28 01:17:18,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=909, PETRI_PLACES=120, PETRI_TRANSITIONS=135} [2024-06-28 01:17:18,526 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2024-06-28 01:17:18,527 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 135 transitions, 909 flow [2024-06-28 01:17:18,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:18,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:18,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:18,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:17:18,527 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:18,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:18,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1312781991, now seen corresponding path program 1 times [2024-06-28 01:17:18,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:18,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867361410] [2024-06-28 01:17:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:18,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:19,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867361410] [2024-06-28 01:17:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867361410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:19,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:19,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216694310] [2024-06-28 01:17:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:19,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:19,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:19,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 135 transitions, 909 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 01:17:19,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:19,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:19,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:20,900 INFO L124 PetriNetUnfolderBase]: 5652/9102 cut-off events. [2024-06-28 01:17:20,901 INFO L125 PetriNetUnfolderBase]: For 142667/142667 co-relation queries the response was YES. [2024-06-28 01:17:20,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39502 conditions, 9102 events. 5652/9102 cut-off events. For 142667/142667 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 58651 event pairs, 1732 based on Foata normal form. 2/8801 useless extension candidates. Maximal degree in co-relation 39452. Up to 7934 conditions per place. [2024-06-28 01:17:20,968 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 167 selfloop transitions, 23 changer transitions 0/200 dead transitions. [2024-06-28 01:17:20,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 200 transitions, 1487 flow [2024-06-28 01:17:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:17:20,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177777777777778 [2024-06-28 01:17:20,969 INFO L175 Difference]: Start difference. First operand has 120 places, 135 transitions, 909 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:17:20,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 200 transitions, 1487 flow [2024-06-28 01:17:21,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 200 transitions, 1445 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:21,053 INFO L231 Difference]: Finished difference. Result has 125 places, 138 transitions, 969 flow [2024-06-28 01:17:21,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=125, PETRI_TRANSITIONS=138} [2024-06-28 01:17:21,054 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-28 01:17:21,054 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 138 transitions, 969 flow [2024-06-28 01:17:21,054 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 01:17:21,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:21,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:21,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:17:21,055 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:21,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -263314867, now seen corresponding path program 1 times [2024-06-28 01:17:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:21,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981641151] [2024-06-28 01:17:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:21,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981641151] [2024-06-28 01:17:21,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981641151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:21,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:21,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614150314] [2024-06-28 01:17:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:21,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:21,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:21,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:21,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 138 transitions, 969 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 01:17:21,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:21,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:21,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:23,543 INFO L124 PetriNetUnfolderBase]: 5698/9024 cut-off events. [2024-06-28 01:17:23,544 INFO L125 PetriNetUnfolderBase]: For 154771/154774 co-relation queries the response was YES. [2024-06-28 01:17:23,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40715 conditions, 9024 events. 5698/9024 cut-off events. For 154771/154774 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 56759 event pairs, 1457 based on Foata normal form. 4/8764 useless extension candidates. Maximal degree in co-relation 40664. Up to 7292 conditions per place. [2024-06-28 01:17:23,610 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 128 selfloop transitions, 72 changer transitions 0/210 dead transitions. [2024-06-28 01:17:23,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 210 transitions, 1737 flow [2024-06-28 01:17:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:17:23,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 01:17:23,612 INFO L175 Difference]: Start difference. First operand has 125 places, 138 transitions, 969 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:17:23,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 210 transitions, 1737 flow [2024-06-28 01:17:23,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 210 transitions, 1659 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:23,713 INFO L231 Difference]: Finished difference. Result has 127 places, 144 transitions, 1133 flow [2024-06-28 01:17:23,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1133, PETRI_PLACES=127, PETRI_TRANSITIONS=144} [2024-06-28 01:17:23,714 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-06-28 01:17:23,714 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 144 transitions, 1133 flow [2024-06-28 01:17:23,714 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 01:17:23,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:23,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:23,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:17:23,715 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:23,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:23,715 INFO L85 PathProgramCache]: Analyzing trace with hash -92612623, now seen corresponding path program 2 times [2024-06-28 01:17:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:23,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25162409] [2024-06-28 01:17:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:23,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25162409] [2024-06-28 01:17:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25162409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:24,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:24,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8396233] [2024-06-28 01:17:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:24,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:24,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 144 transitions, 1133 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 01:17:24,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:24,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:24,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:25,907 INFO L124 PetriNetUnfolderBase]: 5721/8729 cut-off events. [2024-06-28 01:17:25,908 INFO L125 PetriNetUnfolderBase]: For 166574/166577 co-relation queries the response was YES. [2024-06-28 01:17:25,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42133 conditions, 8729 events. 5721/8729 cut-off events. For 166574/166577 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 52938 event pairs, 1605 based on Foata normal form. 4/8579 useless extension candidates. Maximal degree in co-relation 42081. Up to 7806 conditions per place. [2024-06-28 01:17:25,985 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 151 selfloop transitions, 51 changer transitions 0/212 dead transitions. [2024-06-28 01:17:25,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 212 transitions, 1909 flow [2024-06-28 01:17:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:25,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:17:25,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-28 01:17:25,987 INFO L175 Difference]: Start difference. First operand has 127 places, 144 transitions, 1133 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:17:25,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 212 transitions, 1909 flow [2024-06-28 01:17:26,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 212 transitions, 1791 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:26,104 INFO L231 Difference]: Finished difference. Result has 131 places, 150 transitions, 1231 flow [2024-06-28 01:17:26,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=131, PETRI_TRANSITIONS=150} [2024-06-28 01:17:26,104 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-28 01:17:26,104 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 150 transitions, 1231 flow [2024-06-28 01:17:26,105 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 01:17:26,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:26,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:26,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:17:26,105 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:26,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash -92432947, now seen corresponding path program 2 times [2024-06-28 01:17:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:26,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102890989] [2024-06-28 01:17:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:26,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102890989] [2024-06-28 01:17:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102890989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:26,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650829957] [2024-06-28 01:17:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:26,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:26,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:26,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 150 transitions, 1231 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 01:17:26,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:26,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:26,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:28,265 INFO L124 PetriNetUnfolderBase]: 5823/8858 cut-off events. [2024-06-28 01:17:28,265 INFO L125 PetriNetUnfolderBase]: For 182368/182371 co-relation queries the response was YES. [2024-06-28 01:17:28,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43997 conditions, 8858 events. 5823/8858 cut-off events. For 182368/182371 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53514 event pairs, 1459 based on Foata normal form. 4/8717 useless extension candidates. Maximal degree in co-relation 43943. Up to 7410 conditions per place. [2024-06-28 01:17:28,332 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 139 selfloop transitions, 72 changer transitions 0/221 dead transitions. [2024-06-28 01:17:28,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 221 transitions, 2133 flow [2024-06-28 01:17:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:17:28,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 01:17:28,333 INFO L175 Difference]: Start difference. First operand has 131 places, 150 transitions, 1231 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:17:28,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 221 transitions, 2133 flow [2024-06-28 01:17:28,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 221 transitions, 2034 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:28,455 INFO L231 Difference]: Finished difference. Result has 135 places, 156 transitions, 1356 flow [2024-06-28 01:17:28,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=135, PETRI_TRANSITIONS=156} [2024-06-28 01:17:28,456 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-28 01:17:28,456 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 156 transitions, 1356 flow [2024-06-28 01:17:28,456 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 01:17:28,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:28,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:28,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:17:28,457 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:28,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash -258673423, now seen corresponding path program 3 times [2024-06-28 01:17:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:28,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108982701] [2024-06-28 01:17:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:28,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:29,432 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 01:17:29,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:29,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108982701] [2024-06-28 01:17:29,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108982701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:29,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:29,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:29,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515664694] [2024-06-28 01:17:29,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:29,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:29,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:29,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:29,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:29,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 156 transitions, 1356 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 01:17:29,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:29,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:29,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:30,980 INFO L124 PetriNetUnfolderBase]: 5846/8942 cut-off events. [2024-06-28 01:17:30,981 INFO L125 PetriNetUnfolderBase]: For 190920/190923 co-relation queries the response was YES. [2024-06-28 01:17:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45018 conditions, 8942 events. 5846/8942 cut-off events. For 190920/190923 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 54568 event pairs, 1623 based on Foata normal form. 4/8784 useless extension candidates. Maximal degree in co-relation 44962. Up to 7972 conditions per place. [2024-06-28 01:17:31,039 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 156 selfloop transitions, 52 changer transitions 0/218 dead transitions. [2024-06-28 01:17:31,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 218 transitions, 2088 flow [2024-06-28 01:17:31,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:17:31,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2024-06-28 01:17:31,041 INFO L175 Difference]: Start difference. First operand has 135 places, 156 transitions, 1356 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:17:31,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 218 transitions, 2088 flow [2024-06-28 01:17:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 218 transitions, 1962 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:31,218 INFO L231 Difference]: Finished difference. Result has 139 places, 159 transitions, 1386 flow [2024-06-28 01:17:31,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=139, PETRI_TRANSITIONS=159} [2024-06-28 01:17:31,219 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2024-06-28 01:17:31,219 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 159 transitions, 1386 flow [2024-06-28 01:17:31,219 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 01:17:31,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:31,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:31,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:17:31,220 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:31,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1308020205, now seen corresponding path program 3 times [2024-06-28 01:17:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:31,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835531669] [2024-06-28 01:17:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:31,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835531669] [2024-06-28 01:17:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835531669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862119051] [2024-06-28 01:17:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:32,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:32,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 159 transitions, 1386 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 01:17:32,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:32,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:32,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:33,748 INFO L124 PetriNetUnfolderBase]: 5836/8884 cut-off events. [2024-06-28 01:17:33,748 INFO L125 PetriNetUnfolderBase]: For 198684/198687 co-relation queries the response was YES. [2024-06-28 01:17:33,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44746 conditions, 8884 events. 5836/8884 cut-off events. For 198684/198687 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 53833 event pairs, 1457 based on Foata normal form. 4/8742 useless extension candidates. Maximal degree in co-relation 44689. Up to 7434 conditions per place. [2024-06-28 01:17:33,824 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 142 selfloop transitions, 71 changer transitions 0/223 dead transitions. [2024-06-28 01:17:33,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 223 transitions, 2108 flow [2024-06-28 01:17:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:17:33,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 01:17:33,827 INFO L175 Difference]: Start difference. First operand has 139 places, 159 transitions, 1386 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:17:33,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 223 transitions, 2108 flow [2024-06-28 01:17:33,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 223 transitions, 1977 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:33,982 INFO L231 Difference]: Finished difference. Result has 142 places, 159 transitions, 1405 flow [2024-06-28 01:17:33,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1405, PETRI_PLACES=142, PETRI_TRANSITIONS=159} [2024-06-28 01:17:33,983 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 86 predicate places. [2024-06-28 01:17:33,983 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 159 transitions, 1405 flow [2024-06-28 01:17:33,983 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 01:17:33,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:33,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:33,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:17:33,984 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:33,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1376722201, now seen corresponding path program 4 times [2024-06-28 01:17:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:33,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595100860] [2024-06-28 01:17:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:33,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595100860] [2024-06-28 01:17:34,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595100860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:34,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:34,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:34,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506951637] [2024-06-28 01:17:34,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:34,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:34,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:34,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:34,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:34,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:34,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 159 transitions, 1405 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 01:17:34,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:34,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:34,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:36,389 INFO L124 PetriNetUnfolderBase]: 5938/9071 cut-off events. [2024-06-28 01:17:36,389 INFO L125 PetriNetUnfolderBase]: For 213059/213062 co-relation queries the response was YES. [2024-06-28 01:17:36,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46170 conditions, 9071 events. 5938/9071 cut-off events. For 213059/213062 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 55303 event pairs, 1495 based on Foata normal form. 4/8920 useless extension candidates. Maximal degree in co-relation 46112. Up to 7520 conditions per place. [2024-06-28 01:17:36,458 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 140 selfloop transitions, 77 changer transitions 0/227 dead transitions. [2024-06-28 01:17:36,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 227 transitions, 2353 flow [2024-06-28 01:17:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 01:17:36,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:17:36,468 INFO L175 Difference]: Start difference. First operand has 142 places, 159 transitions, 1405 flow. Second operand 9 states and 243 transitions. [2024-06-28 01:17:36,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 227 transitions, 2353 flow [2024-06-28 01:17:36,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 227 transitions, 2191 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:36,614 INFO L231 Difference]: Finished difference. Result has 143 places, 165 transitions, 1495 flow [2024-06-28 01:17:36,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1495, PETRI_PLACES=143, PETRI_TRANSITIONS=165} [2024-06-28 01:17:36,615 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 87 predicate places. [2024-06-28 01:17:36,615 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 165 transitions, 1495 flow [2024-06-28 01:17:36,615 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 01:17:36,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:36,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:17:36,616 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:36,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -86183533, now seen corresponding path program 4 times [2024-06-28 01:17:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:36,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990260896] [2024-06-28 01:17:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990260896] [2024-06-28 01:17:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990260896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:37,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134997003] [2024-06-28 01:17:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:37,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:37,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 165 transitions, 1495 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 01:17:37,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:37,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:37,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:39,198 INFO L124 PetriNetUnfolderBase]: 5961/9133 cut-off events. [2024-06-28 01:17:39,198 INFO L125 PetriNetUnfolderBase]: For 222490/222493 co-relation queries the response was YES. [2024-06-28 01:17:39,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46701 conditions, 9133 events. 5961/9133 cut-off events. For 222490/222493 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 55945 event pairs, 1630 based on Foata normal form. 4/8974 useless extension candidates. Maximal degree in co-relation 46642. Up to 8124 conditions per place. [2024-06-28 01:17:39,269 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 160 selfloop transitions, 54 changer transitions 0/224 dead transitions. [2024-06-28 01:17:39,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 224 transitions, 2246 flow [2024-06-28 01:17:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:17:39,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:17:39,274 INFO L175 Difference]: Start difference. First operand has 143 places, 165 transitions, 1495 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:17:39,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 224 transitions, 2246 flow [2024-06-28 01:17:39,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 224 transitions, 2122 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:39,449 INFO L231 Difference]: Finished difference. Result has 147 places, 168 transitions, 1534 flow [2024-06-28 01:17:39,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1534, PETRI_PLACES=147, PETRI_TRANSITIONS=168} [2024-06-28 01:17:39,450 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-28 01:17:39,450 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 168 transitions, 1534 flow [2024-06-28 01:17:39,450 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 01:17:39,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:39,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:39,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:17:39,451 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:39,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash -86183347, now seen corresponding path program 5 times [2024-06-28 01:17:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:39,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461922351] [2024-06-28 01:17:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:39,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:40,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461922351] [2024-06-28 01:17:40,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461922351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:40,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:40,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328441347] [2024-06-28 01:17:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:40,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:40,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:40,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 168 transitions, 1534 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 01:17:40,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:40,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:40,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:42,102 INFO L124 PetriNetUnfolderBase]: 6007/9185 cut-off events. [2024-06-28 01:17:42,102 INFO L125 PetriNetUnfolderBase]: For 234423/234426 co-relation queries the response was YES. [2024-06-28 01:17:42,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46892 conditions, 9185 events. 6007/9185 cut-off events. For 234423/234426 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 56143 event pairs, 1504 based on Foata normal form. 4/9033 useless extension candidates. Maximal degree in co-relation 46832. Up to 7591 conditions per place. [2024-06-28 01:17:42,171 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 146 selfloop transitions, 78 changer transitions 0/234 dead transitions. [2024-06-28 01:17:42,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 234 transitions, 2464 flow [2024-06-28 01:17:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:17:42,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 01:17:42,173 INFO L175 Difference]: Start difference. First operand has 147 places, 168 transitions, 1534 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:17:42,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 234 transitions, 2464 flow [2024-06-28 01:17:42,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 234 transitions, 2349 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:42,367 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 1621 flow [2024-06-28 01:17:42,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1621, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2024-06-28 01:17:42,368 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-06-28 01:17:42,368 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 1621 flow [2024-06-28 01:17:42,368 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 01:17:42,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:42,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:42,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:17:42,368 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:42,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash 576486985, now seen corresponding path program 6 times [2024-06-28 01:17:42,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:42,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284448156] [2024-06-28 01:17:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:42,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:43,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284448156] [2024-06-28 01:17:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284448156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904545919] [2024-06-28 01:17:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:43,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:43,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:43,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:43,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 1621 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 01:17:43,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:43,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:43,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:45,099 INFO L124 PetriNetUnfolderBase]: 5997/9164 cut-off events. [2024-06-28 01:17:45,100 INFO L125 PetriNetUnfolderBase]: For 243470/243473 co-relation queries the response was YES. [2024-06-28 01:17:45,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47309 conditions, 9164 events. 5997/9164 cut-off events. For 243470/243473 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 55957 event pairs, 1493 based on Foata normal form. 4/9012 useless extension candidates. Maximal degree in co-relation 47248. Up to 7583 conditions per place. [2024-06-28 01:17:45,187 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 145 selfloop transitions, 77 changer transitions 0/232 dead transitions. [2024-06-28 01:17:45,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 232 transitions, 2369 flow [2024-06-28 01:17:45,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 01:17:45,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422222222222223 [2024-06-28 01:17:45,189 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 1621 flow. Second operand 9 states and 244 transitions. [2024-06-28 01:17:45,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 232 transitions, 2369 flow [2024-06-28 01:17:45,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 232 transitions, 2189 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:45,470 INFO L231 Difference]: Finished difference. Result has 153 places, 171 transitions, 1603 flow [2024-06-28 01:17:45,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1603, PETRI_PLACES=153, PETRI_TRANSITIONS=171} [2024-06-28 01:17:45,470 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2024-06-28 01:17:45,471 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 171 transitions, 1603 flow [2024-06-28 01:17:45,471 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 01:17:45,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:45,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:45,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:17:45,471 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:45,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash 617897915, now seen corresponding path program 1 times [2024-06-28 01:17:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:45,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047743873] [2024-06-28 01:17:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:45,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:46,266 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 01:17:46,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:46,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047743873] [2024-06-28 01:17:46,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047743873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:46,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:46,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:17:46,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176499908] [2024-06-28 01:17:46,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:46,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:17:46,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:17:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:17:46,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:17:46,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 171 transitions, 1603 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:46,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:46,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:17:46,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:47,352 INFO L124 PetriNetUnfolderBase]: 4950/8089 cut-off events. [2024-06-28 01:17:47,352 INFO L125 PetriNetUnfolderBase]: For 247256/247344 co-relation queries the response was YES. [2024-06-28 01:17:47,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41566 conditions, 8089 events. 4950/8089 cut-off events. For 247256/247344 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 54298 event pairs, 1848 based on Foata normal form. 21/7939 useless extension candidates. Maximal degree in co-relation 41504. Up to 6923 conditions per place. [2024-06-28 01:17:47,429 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 138 selfloop transitions, 13 changer transitions 0/201 dead transitions. [2024-06-28 01:17:47,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 201 transitions, 2028 flow [2024-06-28 01:17:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 01:17:47,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366666666666666 [2024-06-28 01:17:47,431 INFO L175 Difference]: Start difference. First operand has 153 places, 171 transitions, 1603 flow. Second operand 6 states and 161 transitions. [2024-06-28 01:17:47,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 201 transitions, 2028 flow [2024-06-28 01:17:47,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 201 transitions, 1834 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:17:47,629 INFO L231 Difference]: Finished difference. Result has 151 places, 178 transitions, 1527 flow [2024-06-28 01:17:47,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1527, PETRI_PLACES=151, PETRI_TRANSITIONS=178} [2024-06-28 01:17:47,638 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2024-06-28 01:17:47,639 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 178 transitions, 1527 flow [2024-06-28 01:17:47,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:47,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:47,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:17:47,639 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:47,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash -469592055, now seen corresponding path program 7 times [2024-06-28 01:17:47,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:47,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740245659] [2024-06-28 01:17:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740245659] [2024-06-28 01:17:48,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740245659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:48,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:48,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064728709] [2024-06-28 01:17:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:48,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:48,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:48,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 178 transitions, 1527 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 01:17:48,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:48,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:48,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:50,125 INFO L124 PetriNetUnfolderBase]: 6060/9359 cut-off events. [2024-06-28 01:17:50,125 INFO L125 PetriNetUnfolderBase]: For 265565/265577 co-relation queries the response was YES. [2024-06-28 01:17:50,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48711 conditions, 9359 events. 6060/9359 cut-off events. For 265565/265577 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 58315 event pairs, 1710 based on Foata normal form. 8/9181 useless extension candidates. Maximal degree in co-relation 48647. Up to 7645 conditions per place. [2024-06-28 01:17:50,202 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 140 selfloop transitions, 88 changer transitions 0/238 dead transitions. [2024-06-28 01:17:50,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 238 transitions, 2335 flow [2024-06-28 01:17:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:17:50,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2024-06-28 01:17:50,204 INFO L175 Difference]: Start difference. First operand has 151 places, 178 transitions, 1527 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:17:50,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 238 transitions, 2335 flow [2024-06-28 01:17:50,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 238 transitions, 2294 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:50,477 INFO L231 Difference]: Finished difference. Result has 157 places, 181 transitions, 1712 flow [2024-06-28 01:17:50,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1712, PETRI_PLACES=157, PETRI_TRANSITIONS=181} [2024-06-28 01:17:50,478 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 101 predicate places. [2024-06-28 01:17:50,478 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 181 transitions, 1712 flow [2024-06-28 01:17:50,478 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 01:17:50,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:50,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:50,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:17:50,479 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:50,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash 803275649, now seen corresponding path program 8 times [2024-06-28 01:17:50,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:50,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753771222] [2024-06-28 01:17:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:51,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:51,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753771222] [2024-06-28 01:17:51,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753771222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:51,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:51,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655718305] [2024-06-28 01:17:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:51,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:51,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:51,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:51,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 181 transitions, 1712 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 01:17:51,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:51,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:51,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:53,277 INFO L124 PetriNetUnfolderBase]: 6162/9491 cut-off events. [2024-06-28 01:17:53,278 INFO L125 PetriNetUnfolderBase]: For 284442/284454 co-relation queries the response was YES. [2024-06-28 01:17:53,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50728 conditions, 9491 events. 6162/9491 cut-off events. For 284442/284454 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 58808 event pairs, 1709 based on Foata normal form. 8/9324 useless extension candidates. Maximal degree in co-relation 50663. Up to 7731 conditions per place. [2024-06-28 01:17:53,356 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 148 selfloop transitions, 89 changer transitions 0/247 dead transitions. [2024-06-28 01:17:53,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 247 transitions, 2758 flow [2024-06-28 01:17:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 01:17:53,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355555555555556 [2024-06-28 01:17:53,358 INFO L175 Difference]: Start difference. First operand has 157 places, 181 transitions, 1712 flow. Second operand 9 states and 241 transitions. [2024-06-28 01:17:53,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 247 transitions, 2758 flow [2024-06-28 01:17:53,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 247 transitions, 2594 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:53,642 INFO L231 Difference]: Finished difference. Result has 160 places, 187 transitions, 1830 flow [2024-06-28 01:17:53,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1830, PETRI_PLACES=160, PETRI_TRANSITIONS=187} [2024-06-28 01:17:53,643 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 104 predicate places. [2024-06-28 01:17:53,644 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 187 transitions, 1830 flow [2024-06-28 01:17:53,644 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 01:17:53,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:53,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:53,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:17:53,644 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:53,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:53,645 INFO L85 PathProgramCache]: Analyzing trace with hash -754929075, now seen corresponding path program 9 times [2024-06-28 01:17:53,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108265529] [2024-06-28 01:17:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108265529] [2024-06-28 01:17:54,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108265529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:54,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:54,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716200246] [2024-06-28 01:17:54,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:54,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:54,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:54,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:54,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:54,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:54,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 187 transitions, 1830 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 01:17:54,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:54,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:54,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:56,122 INFO L124 PetriNetUnfolderBase]: 6152/9477 cut-off events. [2024-06-28 01:17:56,123 INFO L125 PetriNetUnfolderBase]: For 293423/293435 co-relation queries the response was YES. [2024-06-28 01:17:56,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50665 conditions, 9477 events. 6152/9477 cut-off events. For 293423/293435 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 58750 event pairs, 1707 based on Foata normal form. 8/9310 useless extension candidates. Maximal degree in co-relation 50599. Up to 7723 conditions per place. [2024-06-28 01:17:56,201 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 144 selfloop transitions, 91 changer transitions 0/245 dead transitions. [2024-06-28 01:17:56,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 245 transitions, 2622 flow [2024-06-28 01:17:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:17:56,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-28 01:17:56,202 INFO L175 Difference]: Start difference. First operand has 160 places, 187 transitions, 1830 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:17:56,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 245 transitions, 2622 flow [2024-06-28 01:17:56,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 245 transitions, 2345 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:56,436 INFO L231 Difference]: Finished difference. Result has 162 places, 187 transitions, 1743 flow [2024-06-28 01:17:56,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1743, PETRI_PLACES=162, PETRI_TRANSITIONS=187} [2024-06-28 01:17:56,436 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2024-06-28 01:17:56,436 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 187 transitions, 1743 flow [2024-06-28 01:17:56,437 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 01:17:56,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:56,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:56,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:17:56,437 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:56,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash -754691925, now seen corresponding path program 10 times [2024-06-28 01:17:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573148407] [2024-06-28 01:17:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:56,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:57,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:57,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573148407] [2024-06-28 01:17:57,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573148407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:57,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403913356] [2024-06-28 01:17:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:57,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:57,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:57,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:17:57,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 187 transitions, 1743 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 01:17:57,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:57,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:17:57,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:59,051 INFO L124 PetriNetUnfolderBase]: 6142/9463 cut-off events. [2024-06-28 01:17:59,052 INFO L125 PetriNetUnfolderBase]: For 297811/297823 co-relation queries the response was YES. [2024-06-28 01:17:59,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50531 conditions, 9463 events. 6142/9463 cut-off events. For 297811/297823 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 58708 event pairs, 1716 based on Foata normal form. 8/9296 useless extension candidates. Maximal degree in co-relation 50464. Up to 7715 conditions per place. [2024-06-28 01:17:59,129 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 145 selfloop transitions, 88 changer transitions 0/243 dead transitions. [2024-06-28 01:17:59,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 243 transitions, 2369 flow [2024-06-28 01:17:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:17:59,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-28 01:17:59,131 INFO L175 Difference]: Start difference. First operand has 162 places, 187 transitions, 1743 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:17:59,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 243 transitions, 2369 flow [2024-06-28 01:17:59,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 243 transitions, 2133 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:59,359 INFO L231 Difference]: Finished difference. Result has 163 places, 187 transitions, 1691 flow [2024-06-28 01:17:59,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1691, PETRI_PLACES=163, PETRI_TRANSITIONS=187} [2024-06-28 01:17:59,360 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 107 predicate places. [2024-06-28 01:17:59,360 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 187 transitions, 1691 flow [2024-06-28 01:17:59,360 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 01:17:59,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:59,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:59,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:17:59,361 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:59,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash -754929261, now seen corresponding path program 5 times [2024-06-28 01:17:59,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:59,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889207938] [2024-06-28 01:17:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:59,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:00,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:00,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889207938] [2024-06-28 01:18:00,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889207938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:00,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:00,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977389069] [2024-06-28 01:18:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:00,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:00,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:00,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 187 transitions, 1691 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 01:18:00,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:00,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:00,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:01,880 INFO L124 PetriNetUnfolderBase]: 6137/9503 cut-off events. [2024-06-28 01:18:01,880 INFO L125 PetriNetUnfolderBase]: For 305282/305291 co-relation queries the response was YES. [2024-06-28 01:18:01,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50521 conditions, 9503 events. 6137/9503 cut-off events. For 305282/305291 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 59465 event pairs, 1833 based on Foata normal form. 4/9307 useless extension candidates. Maximal degree in co-relation 50453. Up to 8370 conditions per place. [2024-06-28 01:18:01,954 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 172 selfloop transitions, 56 changer transitions 0/238 dead transitions. [2024-06-28 01:18:01,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 238 transitions, 2287 flow [2024-06-28 01:18:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:18:01,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2024-06-28 01:18:01,956 INFO L175 Difference]: Start difference. First operand has 163 places, 187 transitions, 1691 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:18:01,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 238 transitions, 2287 flow [2024-06-28 01:18:02,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 238 transitions, 2003 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 01:18:02,164 INFO L231 Difference]: Finished difference. Result has 162 places, 187 transitions, 1527 flow [2024-06-28 01:18:02,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1527, PETRI_PLACES=162, PETRI_TRANSITIONS=187} [2024-06-28 01:18:02,164 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2024-06-28 01:18:02,164 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 187 transitions, 1527 flow [2024-06-28 01:18:02,164 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 01:18:02,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:02,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:18:02,165 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:02,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash 632212475, now seen corresponding path program 2 times [2024-06-28 01:18:02,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636766122] [2024-06-28 01:18:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:02,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:02,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636766122] [2024-06-28 01:18:02,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636766122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:02,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:02,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:18:02,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399672087] [2024-06-28 01:18:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:02,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:18:02,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:18:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:18:03,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:18:03,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 187 transitions, 1527 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:03,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:03,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:18:03,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:04,107 INFO L124 PetriNetUnfolderBase]: 5019/8204 cut-off events. [2024-06-28 01:18:04,108 INFO L125 PetriNetUnfolderBase]: For 308252/308336 co-relation queries the response was YES. [2024-06-28 01:18:04,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43843 conditions, 8204 events. 5019/8204 cut-off events. For 308252/308336 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 55184 event pairs, 1857 based on Foata normal form. 26/8052 useless extension candidates. Maximal degree in co-relation 43774. Up to 6971 conditions per place. [2024-06-28 01:18:04,180 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 138 selfloop transitions, 18 changer transitions 0/209 dead transitions. [2024-06-28 01:18:04,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 209 transitions, 1923 flow [2024-06-28 01:18:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:18:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:18:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 01:18:04,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:18:04,182 INFO L175 Difference]: Start difference. First operand has 162 places, 187 transitions, 1527 flow. Second operand 6 states and 158 transitions. [2024-06-28 01:18:04,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 209 transitions, 1923 flow [2024-06-28 01:18:04,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 209 transitions, 1733 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 01:18:04,472 INFO L231 Difference]: Finished difference. Result has 158 places, 190 transitions, 1419 flow [2024-06-28 01:18:04,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1419, PETRI_PLACES=158, PETRI_TRANSITIONS=190} [2024-06-28 01:18:04,473 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2024-06-28 01:18:04,473 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 190 transitions, 1419 flow [2024-06-28 01:18:04,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:04,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:04,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:04,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:18:04,474 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:04,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash 460210927, now seen corresponding path program 1 times [2024-06-28 01:18:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:04,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243045288] [2024-06-28 01:18:04,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:04,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:05,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243045288] [2024-06-28 01:18:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243045288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:05,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:05,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:18:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34118636] [2024-06-28 01:18:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:05,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:18:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:18:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:18:05,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:18:05,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 190 transitions, 1419 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:05,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:05,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:18:05,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:06,529 INFO L124 PetriNetUnfolderBase]: 5041/8150 cut-off events. [2024-06-28 01:18:06,529 INFO L125 PetriNetUnfolderBase]: For 277242/277244 co-relation queries the response was YES. [2024-06-28 01:18:06,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43457 conditions, 8150 events. 5041/8150 cut-off events. For 277242/277244 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 53199 event pairs, 1665 based on Foata normal form. 3/7996 useless extension candidates. Maximal degree in co-relation 43387. Up to 7113 conditions per place. [2024-06-28 01:18:06,601 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 181 selfloop transitions, 15 changer transitions 0/218 dead transitions. [2024-06-28 01:18:06,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 218 transitions, 1941 flow [2024-06-28 01:18:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:18:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:18:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:18:06,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828571428571429 [2024-06-28 01:18:06,602 INFO L175 Difference]: Start difference. First operand has 158 places, 190 transitions, 1419 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:18:06,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 218 transitions, 1941 flow [2024-06-28 01:18:06,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 218 transitions, 1881 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:18:06,829 INFO L231 Difference]: Finished difference. Result has 163 places, 199 transitions, 1501 flow [2024-06-28 01:18:06,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1501, PETRI_PLACES=163, PETRI_TRANSITIONS=199} [2024-06-28 01:18:06,830 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 107 predicate places. [2024-06-28 01:18:06,830 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 199 transitions, 1501 flow [2024-06-28 01:18:06,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:06,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:06,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:18:06,831 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:06,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 632220411, now seen corresponding path program 2 times [2024-06-28 01:18:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330170788] [2024-06-28 01:18:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:07,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:07,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330170788] [2024-06-28 01:18:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330170788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:07,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:07,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:18:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543713880] [2024-06-28 01:18:07,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:07,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:18:07,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:18:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:18:07,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:18:07,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 199 transitions, 1501 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:07,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:07,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:18:07,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:08,767 INFO L124 PetriNetUnfolderBase]: 5043/8201 cut-off events. [2024-06-28 01:18:08,767 INFO L125 PetriNetUnfolderBase]: For 288679/288687 co-relation queries the response was YES. [2024-06-28 01:18:08,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44680 conditions, 8201 events. 5043/8201 cut-off events. For 288679/288687 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 54099 event pairs, 1661 based on Foata normal form. 7/8035 useless extension candidates. Maximal degree in co-relation 44607. Up to 7096 conditions per place. [2024-06-28 01:18:08,845 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 179 selfloop transitions, 19 changer transitions 0/220 dead transitions. [2024-06-28 01:18:08,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 220 transitions, 1991 flow [2024-06-28 01:18:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:18:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:18:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:18:08,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:18:08,847 INFO L175 Difference]: Start difference. First operand has 163 places, 199 transitions, 1501 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:18:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 220 transitions, 1991 flow [2024-06-28 01:18:09,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 220 transitions, 1938 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:18:09,118 INFO L231 Difference]: Finished difference. Result has 166 places, 202 transitions, 1540 flow [2024-06-28 01:18:09,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1540, PETRI_PLACES=166, PETRI_TRANSITIONS=202} [2024-06-28 01:18:09,118 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 110 predicate places. [2024-06-28 01:18:09,119 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 202 transitions, 1540 flow [2024-06-28 01:18:09,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:09,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:09,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:18:09,119 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:09,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash -478086461, now seen corresponding path program 1 times [2024-06-28 01:18:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391085407] [2024-06-28 01:18:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391085407] [2024-06-28 01:18:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391085407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:09,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:09,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:09,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550880569] [2024-06-28 01:18:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:09,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:09,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:10,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:10,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 202 transitions, 1540 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 01:18:10,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:10,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:10,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:11,623 INFO L124 PetriNetUnfolderBase]: 6204/9665 cut-off events. [2024-06-28 01:18:11,623 INFO L125 PetriNetUnfolderBase]: For 360439/360439 co-relation queries the response was YES. [2024-06-28 01:18:11,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53823 conditions, 9665 events. 6204/9665 cut-off events. For 360439/360439 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 61160 event pairs, 1987 based on Foata normal form. 4/9492 useless extension candidates. Maximal degree in co-relation 53749. Up to 8667 conditions per place. [2024-06-28 01:18:11,712 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 234 selfloop transitions, 30 changer transitions 0/274 dead transitions. [2024-06-28 01:18:11,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 274 transitions, 2322 flow [2024-06-28 01:18:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-28 01:18:11,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-28 01:18:11,713 INFO L175 Difference]: Start difference. First operand has 166 places, 202 transitions, 1540 flow. Second operand 10 states and 258 transitions. [2024-06-28 01:18:11,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 274 transitions, 2322 flow [2024-06-28 01:18:12,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 274 transitions, 2252 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:18:12,055 INFO L231 Difference]: Finished difference. Result has 172 places, 205 transitions, 1596 flow [2024-06-28 01:18:12,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=172, PETRI_TRANSITIONS=205} [2024-06-28 01:18:12,056 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 116 predicate places. [2024-06-28 01:18:12,056 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 205 transitions, 1596 flow [2024-06-28 01:18:12,056 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 01:18:12,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:12,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:12,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:18:12,057 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:12,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash 427169573, now seen corresponding path program 2 times [2024-06-28 01:18:12,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714748900] [2024-06-28 01:18:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:12,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:13,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:13,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714748900] [2024-06-28 01:18:13,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714748900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:13,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:13,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:13,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24479724] [2024-06-28 01:18:13,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:13,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:13,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:13,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:13,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 205 transitions, 1596 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 01:18:13,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:13,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:13,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:15,012 INFO L124 PetriNetUnfolderBase]: 6306/9823 cut-off events. [2024-06-28 01:18:15,012 INFO L125 PetriNetUnfolderBase]: For 384338/384344 co-relation queries the response was YES. [2024-06-28 01:18:15,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56142 conditions, 9823 events. 6306/9823 cut-off events. For 384338/384344 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 62261 event pairs, 1681 based on Foata normal form. 5/9650 useless extension candidates. Maximal degree in co-relation 56067. Up to 7498 conditions per place. [2024-06-28 01:18:15,102 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 168 selfloop transitions, 113 changer transitions 0/291 dead transitions. [2024-06-28 01:18:15,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 291 transitions, 2928 flow [2024-06-28 01:18:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 277 transitions. [2024-06-28 01:18:15,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.554 [2024-06-28 01:18:15,104 INFO L175 Difference]: Start difference. First operand has 172 places, 205 transitions, 1596 flow. Second operand 10 states and 277 transitions. [2024-06-28 01:18:15,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 291 transitions, 2928 flow [2024-06-28 01:18:15,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 291 transitions, 2826 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:15,509 INFO L231 Difference]: Finished difference. Result has 174 places, 214 transitions, 1908 flow [2024-06-28 01:18:15,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1908, PETRI_PLACES=174, PETRI_TRANSITIONS=214} [2024-06-28 01:18:15,514 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 118 predicate places. [2024-06-28 01:18:15,514 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 214 transitions, 1908 flow [2024-06-28 01:18:15,514 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 01:18:15,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:15,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:15,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:18:15,515 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:15,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash 427175153, now seen corresponding path program 3 times [2024-06-28 01:18:15,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:15,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376693992] [2024-06-28 01:18:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:15,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:16,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376693992] [2024-06-28 01:18:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376693992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:16,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:16,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:16,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778514498] [2024-06-28 01:18:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:16,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:16,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:16,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:16,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 214 transitions, 1908 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 01:18:16,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:16,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:16,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:18,534 INFO L124 PetriNetUnfolderBase]: 6296/9818 cut-off events. [2024-06-28 01:18:18,534 INFO L125 PetriNetUnfolderBase]: For 399407/399413 co-relation queries the response was YES. [2024-06-28 01:18:18,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57537 conditions, 9818 events. 6296/9818 cut-off events. For 399407/399413 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 62437 event pairs, 1692 based on Foata normal form. 5/9645 useless extension candidates. Maximal degree in co-relation 57461. Up to 7490 conditions per place. [2024-06-28 01:18:18,613 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 164 selfloop transitions, 114 changer transitions 0/288 dead transitions. [2024-06-28 01:18:18,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 288 transitions, 2876 flow [2024-06-28 01:18:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-28 01:18:18,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546 [2024-06-28 01:18:18,616 INFO L175 Difference]: Start difference. First operand has 174 places, 214 transitions, 1908 flow. Second operand 10 states and 273 transitions. [2024-06-28 01:18:18,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 288 transitions, 2876 flow [2024-06-28 01:18:19,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 288 transitions, 2678 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 01:18:19,098 INFO L231 Difference]: Finished difference. Result has 179 places, 214 transitions, 1946 flow [2024-06-28 01:18:19,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1946, PETRI_PLACES=179, PETRI_TRANSITIONS=214} [2024-06-28 01:18:19,099 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 123 predicate places. [2024-06-28 01:18:19,099 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 214 transitions, 1946 flow [2024-06-28 01:18:19,099 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 01:18:19,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:19,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:19,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:18:19,100 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:19,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash 571065683, now seen corresponding path program 4 times [2024-06-28 01:18:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567441434] [2024-06-28 01:18:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:20,114 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 01:18:20,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:20,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567441434] [2024-06-28 01:18:20,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567441434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:20,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224455788] [2024-06-28 01:18:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:20,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:20,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:20,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 214 transitions, 1946 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 01:18:20,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:20,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:20,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:22,185 INFO L124 PetriNetUnfolderBase]: 6454/10063 cut-off events. [2024-06-28 01:18:22,185 INFO L125 PetriNetUnfolderBase]: For 423510/423516 co-relation queries the response was YES. [2024-06-28 01:18:22,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60156 conditions, 10063 events. 6454/10063 cut-off events. For 423510/423516 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 64018 event pairs, 1734 based on Foata normal form. 5/9899 useless extension candidates. Maximal degree in co-relation 60078. Up to 7623 conditions per place. [2024-06-28 01:18:22,277 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 174 selfloop transitions, 115 changer transitions 0/299 dead transitions. [2024-06-28 01:18:22,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 299 transitions, 3492 flow [2024-06-28 01:18:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-06-28 01:18:22,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556 [2024-06-28 01:18:22,279 INFO L175 Difference]: Start difference. First operand has 179 places, 214 transitions, 1946 flow. Second operand 10 states and 278 transitions. [2024-06-28 01:18:22,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 299 transitions, 3492 flow [2024-06-28 01:18:22,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 299 transitions, 3238 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:18:22,828 INFO L231 Difference]: Finished difference. Result has 180 places, 223 transitions, 2104 flow [2024-06-28 01:18:22,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2104, PETRI_PLACES=180, PETRI_TRANSITIONS=223} [2024-06-28 01:18:22,829 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 124 predicate places. [2024-06-28 01:18:22,829 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 223 transitions, 2104 flow [2024-06-28 01:18:22,829 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 01:18:22,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:22,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:18:22,829 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:22,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1893924833, now seen corresponding path program 5 times [2024-06-28 01:18:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:22,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296916152] [2024-06-28 01:18:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:23,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296916152] [2024-06-28 01:18:23,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296916152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:23,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:23,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906489765] [2024-06-28 01:18:23,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:23,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:23,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:23,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:23,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 223 transitions, 2104 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 01:18:23,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:23,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:23,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:25,797 INFO L124 PetriNetUnfolderBase]: 6444/10049 cut-off events. [2024-06-28 01:18:25,799 INFO L125 PetriNetUnfolderBase]: For 433071/433077 co-relation queries the response was YES. [2024-06-28 01:18:25,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60045 conditions, 10049 events. 6444/10049 cut-off events. For 433071/433077 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 63944 event pairs, 1732 based on Foata normal form. 5/9885 useless extension candidates. Maximal degree in co-relation 59966. Up to 7615 conditions per place. [2024-06-28 01:18:25,882 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 171 selfloop transitions, 116 changer transitions 0/297 dead transitions. [2024-06-28 01:18:25,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 297 transitions, 3288 flow [2024-06-28 01:18:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-06-28 01:18:25,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 01:18:25,884 INFO L175 Difference]: Start difference. First operand has 180 places, 223 transitions, 2104 flow. Second operand 10 states and 275 transitions. [2024-06-28 01:18:25,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 297 transitions, 3288 flow [2024-06-28 01:18:26,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 297 transitions, 3055 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 01:18:26,359 INFO L231 Difference]: Finished difference. Result has 185 places, 223 transitions, 2111 flow [2024-06-28 01:18:26,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2111, PETRI_PLACES=185, PETRI_TRANSITIONS=223} [2024-06-28 01:18:26,360 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 129 predicate places. [2024-06-28 01:18:26,360 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 223 transitions, 2111 flow [2024-06-28 01:18:26,361 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 01:18:26,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:26,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:26,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:18:26,361 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:26,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash -472372541, now seen corresponding path program 6 times [2024-06-28 01:18:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:26,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503257288] [2024-06-28 01:18:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:26,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:27,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:27,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503257288] [2024-06-28 01:18:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503257288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:27,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:27,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:27,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119801785] [2024-06-28 01:18:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:27,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:27,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:27,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:27,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 223 transitions, 2111 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 01:18:27,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:27,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:27,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:29,390 INFO L124 PetriNetUnfolderBase]: 6434/10035 cut-off events. [2024-06-28 01:18:29,391 INFO L125 PetriNetUnfolderBase]: For 441642/441648 co-relation queries the response was YES. [2024-06-28 01:18:29,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59761 conditions, 10035 events. 6434/10035 cut-off events. For 441642/441648 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 63884 event pairs, 1741 based on Foata normal form. 5/9871 useless extension candidates. Maximal degree in co-relation 59681. Up to 7607 conditions per place. [2024-06-28 01:18:29,482 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 166 selfloop transitions, 118 changer transitions 0/294 dead transitions. [2024-06-28 01:18:29,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 294 transitions, 3093 flow [2024-06-28 01:18:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-28 01:18:29,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542 [2024-06-28 01:18:29,483 INFO L175 Difference]: Start difference. First operand has 185 places, 223 transitions, 2111 flow. Second operand 10 states and 271 transitions. [2024-06-28 01:18:29,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 294 transitions, 3093 flow [2024-06-28 01:18:30,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 294 transitions, 2829 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:30,067 INFO L231 Difference]: Finished difference. Result has 187 places, 223 transitions, 2091 flow [2024-06-28 01:18:30,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2091, PETRI_PLACES=187, PETRI_TRANSITIONS=223} [2024-06-28 01:18:30,068 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 131 predicate places. [2024-06-28 01:18:30,068 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 223 transitions, 2091 flow [2024-06-28 01:18:30,068 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 01:18:30,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:30,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:30,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:18:30,069 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:30,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1455706443, now seen corresponding path program 1 times [2024-06-28 01:18:30,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:30,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784131269] [2024-06-28 01:18:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:30,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:30,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784131269] [2024-06-28 01:18:30,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784131269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:30,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:30,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:18:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116421126] [2024-06-28 01:18:30,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:30,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:18:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:30,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:18:30,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:18:30,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:18:30,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 223 transitions, 2091 flow. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:30,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:30,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:18:30,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:32,423 INFO L124 PetriNetUnfolderBase]: 5707/9171 cut-off events. [2024-06-28 01:18:32,423 INFO L125 PetriNetUnfolderBase]: For 445472/445538 co-relation queries the response was YES. [2024-06-28 01:18:32,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55378 conditions, 9171 events. 5707/9171 cut-off events. For 445472/445538 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 60748 event pairs, 1921 based on Foata normal form. 7/8972 useless extension candidates. Maximal degree in co-relation 55297. Up to 7890 conditions per place. [2024-06-28 01:18:32,504 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 198 selfloop transitions, 18 changer transitions 0/261 dead transitions. [2024-06-28 01:18:32,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 261 transitions, 2686 flow [2024-06-28 01:18:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:18:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:18:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:18:32,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-06-28 01:18:32,505 INFO L175 Difference]: Start difference. First operand has 187 places, 223 transitions, 2091 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:18:32,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 261 transitions, 2686 flow [2024-06-28 01:18:32,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 261 transitions, 2422 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:18:32,921 INFO L231 Difference]: Finished difference. Result has 185 places, 230 transitions, 1967 flow [2024-06-28 01:18:32,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1967, PETRI_PLACES=185, PETRI_TRANSITIONS=230} [2024-06-28 01:18:32,921 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 129 predicate places. [2024-06-28 01:18:32,921 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 230 transitions, 1967 flow [2024-06-28 01:18:32,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:32,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:32,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:18:32,922 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:32,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1630913674, now seen corresponding path program 1 times [2024-06-28 01:18:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:32,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823762681] [2024-06-28 01:18:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:34,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:34,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823762681] [2024-06-28 01:18:34,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823762681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:34,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:34,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801630612] [2024-06-28 01:18:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:34,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:34,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:34,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:18:34,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 230 transitions, 1967 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:34,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:34,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:18:34,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:35,973 INFO L124 PetriNetUnfolderBase]: 6117/9633 cut-off events. [2024-06-28 01:18:35,973 INFO L125 PetriNetUnfolderBase]: For 471010/471016 co-relation queries the response was YES. [2024-06-28 01:18:36,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58625 conditions, 9633 events. 6117/9633 cut-off events. For 471010/471016 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 62215 event pairs, 1894 based on Foata normal form. 5/9443 useless extension candidates. Maximal degree in co-relation 58542. Up to 8345 conditions per place. [2024-06-28 01:18:36,078 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 226 selfloop transitions, 41 changer transitions 0/290 dead transitions. [2024-06-28 01:18:36,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 290 transitions, 2749 flow [2024-06-28 01:18:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:18:36,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-28 01:18:36,080 INFO L175 Difference]: Start difference. First operand has 185 places, 230 transitions, 1967 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:18:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 290 transitions, 2749 flow [2024-06-28 01:18:36,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 290 transitions, 2682 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:18:36,602 INFO L231 Difference]: Finished difference. Result has 191 places, 235 transitions, 2069 flow [2024-06-28 01:18:36,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2069, PETRI_PLACES=191, PETRI_TRANSITIONS=235} [2024-06-28 01:18:36,603 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 135 predicate places. [2024-06-28 01:18:36,603 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 235 transitions, 2069 flow [2024-06-28 01:18:36,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:36,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:36,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:18:36,603 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:36,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -834348309, now seen corresponding path program 7 times [2024-06-28 01:18:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113715667] [2024-06-28 01:18:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:37,779 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 01:18:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:37,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113715667] [2024-06-28 01:18:37,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113715667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:37,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:37,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635997824] [2024-06-28 01:18:37,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:37,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:37,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:37,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 235 transitions, 2069 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 01:18:37,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:37,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:37,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:39,890 INFO L124 PetriNetUnfolderBase]: 6590/10325 cut-off events. [2024-06-28 01:18:39,890 INFO L125 PetriNetUnfolderBase]: For 500490/500496 co-relation queries the response was YES. [2024-06-28 01:18:39,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63497 conditions, 10325 events. 6590/10325 cut-off events. For 500490/500496 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 66441 event pairs, 1787 based on Foata normal form. 5/10147 useless extension candidates. Maximal degree in co-relation 63412. Up to 7771 conditions per place. [2024-06-28 01:18:40,007 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 173 selfloop transitions, 128 changer transitions 0/311 dead transitions. [2024-06-28 01:18:40,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 311 transitions, 3429 flow [2024-06-28 01:18:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-28 01:18:40,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542 [2024-06-28 01:18:40,009 INFO L175 Difference]: Start difference. First operand has 191 places, 235 transitions, 2069 flow. Second operand 10 states and 271 transitions. [2024-06-28 01:18:40,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 311 transitions, 3429 flow [2024-06-28 01:18:40,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 311 transitions, 3304 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:40,645 INFO L231 Difference]: Finished difference. Result has 195 places, 241 transitions, 2318 flow [2024-06-28 01:18:40,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2318, PETRI_PLACES=195, PETRI_TRANSITIONS=241} [2024-06-28 01:18:40,646 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 139 predicate places. [2024-06-28 01:18:40,646 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 241 transitions, 2318 flow [2024-06-28 01:18:40,647 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 01:18:40,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:40,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:40,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:18:40,647 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:40,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1623284977, now seen corresponding path program 8 times [2024-06-28 01:18:40,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:40,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919927932] [2024-06-28 01:18:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:40,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:41,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919927932] [2024-06-28 01:18:41,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919927932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:41,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:41,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516558895] [2024-06-28 01:18:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:41,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:41,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 241 transitions, 2318 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 01:18:41,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:41,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:41,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:43,887 INFO L124 PetriNetUnfolderBase]: 6692/10470 cut-off events. [2024-06-28 01:18:43,887 INFO L125 PetriNetUnfolderBase]: For 527514/527520 co-relation queries the response was YES. [2024-06-28 01:18:43,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65710 conditions, 10470 events. 6692/10470 cut-off events. For 527514/527520 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 67272 event pairs, 1775 based on Foata normal form. 5/10303 useless extension candidates. Maximal degree in co-relation 65624. Up to 7857 conditions per place. [2024-06-28 01:18:43,995 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 181 selfloop transitions, 129 changer transitions 0/320 dead transitions. [2024-06-28 01:18:43,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 320 transitions, 3936 flow [2024-06-28 01:18:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-06-28 01:18:43,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2024-06-28 01:18:43,997 INFO L175 Difference]: Start difference. First operand has 195 places, 241 transitions, 2318 flow. Second operand 10 states and 276 transitions. [2024-06-28 01:18:43,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 320 transitions, 3936 flow [2024-06-28 01:18:44,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 320 transitions, 3716 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:44,520 INFO L231 Difference]: Finished difference. Result has 199 places, 247 transitions, 2486 flow [2024-06-28 01:18:44,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2486, PETRI_PLACES=199, PETRI_TRANSITIONS=247} [2024-06-28 01:18:44,521 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 143 predicate places. [2024-06-28 01:18:44,521 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 247 transitions, 2486 flow [2024-06-28 01:18:44,521 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 01:18:44,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:44,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:44,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:18:44,521 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:44,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1623279397, now seen corresponding path program 9 times [2024-06-28 01:18:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:44,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116147979] [2024-06-28 01:18:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:44,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:45,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116147979] [2024-06-28 01:18:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116147979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:45,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:45,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:45,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535402530] [2024-06-28 01:18:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:45,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:45,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:45,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:45,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 247 transitions, 2486 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 01:18:45,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:45,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:45,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:47,339 INFO L124 PetriNetUnfolderBase]: 6682/10469 cut-off events. [2024-06-28 01:18:47,339 INFO L125 PetriNetUnfolderBase]: For 538502/538508 co-relation queries the response was YES. [2024-06-28 01:18:47,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65469 conditions, 10469 events. 6682/10469 cut-off events. For 538502/538508 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 67456 event pairs, 1776 based on Foata normal form. 5/10297 useless extension candidates. Maximal degree in co-relation 65382. Up to 7849 conditions per place. [2024-06-28 01:18:47,450 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 177 selfloop transitions, 131 changer transitions 0/318 dead transitions. [2024-06-28 01:18:47,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 318 transitions, 3772 flow [2024-06-28 01:18:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-28 01:18:47,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546 [2024-06-28 01:18:47,452 INFO L175 Difference]: Start difference. First operand has 199 places, 247 transitions, 2486 flow. Second operand 10 states and 273 transitions. [2024-06-28 01:18:47,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 318 transitions, 3772 flow [2024-06-28 01:18:48,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 318 transitions, 3480 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:48,135 INFO L231 Difference]: Finished difference. Result has 203 places, 247 transitions, 2464 flow [2024-06-28 01:18:48,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2464, PETRI_PLACES=203, PETRI_TRANSITIONS=247} [2024-06-28 01:18:48,135 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 147 predicate places. [2024-06-28 01:18:48,135 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 247 transitions, 2464 flow [2024-06-28 01:18:48,136 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 01:18:48,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:48,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:48,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:18:48,136 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:48,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1623486787, now seen corresponding path program 10 times [2024-06-28 01:18:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:48,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205164940] [2024-06-28 01:18:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:48,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205164940] [2024-06-28 01:18:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205164940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914618964] [2024-06-28 01:18:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:49,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:49,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:18:49,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 247 transitions, 2464 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 01:18:49,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:49,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:18:49,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:51,104 INFO L124 PetriNetUnfolderBase]: 6672/10465 cut-off events. [2024-06-28 01:18:51,105 INFO L125 PetriNetUnfolderBase]: For 546669/546675 co-relation queries the response was YES. [2024-06-28 01:18:51,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65215 conditions, 10465 events. 6672/10465 cut-off events. For 546669/546675 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 67508 event pairs, 1807 based on Foata normal form. 5/10289 useless extension candidates. Maximal degree in co-relation 65127. Up to 7841 conditions per place. [2024-06-28 01:18:51,218 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 178 selfloop transitions, 128 changer transitions 0/316 dead transitions. [2024-06-28 01:18:51,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 316 transitions, 3532 flow [2024-06-28 01:18:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-28 01:18:51,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546 [2024-06-28 01:18:51,219 INFO L175 Difference]: Start difference. First operand has 203 places, 247 transitions, 2464 flow. Second operand 10 states and 273 transitions. [2024-06-28 01:18:51,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 316 transitions, 3532 flow [2024-06-28 01:18:51,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 316 transitions, 3244 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:51,944 INFO L231 Difference]: Finished difference. Result has 205 places, 247 transitions, 2440 flow [2024-06-28 01:18:51,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2440, PETRI_PLACES=205, PETRI_TRANSITIONS=247} [2024-06-28 01:18:51,945 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 149 predicate places. [2024-06-28 01:18:51,945 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 247 transitions, 2440 flow [2024-06-28 01:18:51,945 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 01:18:51,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:51,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:51,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:18:51,945 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:51,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1974967453, now seen corresponding path program 1 times [2024-06-28 01:18:51,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:51,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81698775] [2024-06-28 01:18:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:52,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:52,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81698775] [2024-06-28 01:18:52,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81698775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:52,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:52,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:18:52,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801499556] [2024-06-28 01:18:52,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:52,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:18:52,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:52,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:18:52,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:18:53,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:18:53,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 247 transitions, 2440 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:53,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:53,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:18:53,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:54,374 INFO L124 PetriNetUnfolderBase]: 5505/8944 cut-off events. [2024-06-28 01:18:54,374 INFO L125 PetriNetUnfolderBase]: For 550301/550487 co-relation queries the response was YES. [2024-06-28 01:18:54,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57939 conditions, 8944 events. 5505/8944 cut-off events. For 550301/550487 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 60084 event pairs, 1795 based on Foata normal form. 9/8658 useless extension candidates. Maximal degree in co-relation 57850. Up to 7539 conditions per place. [2024-06-28 01:18:54,489 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 202 selfloop transitions, 17 changer transitions 0/277 dead transitions. [2024-06-28 01:18:54,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 277 transitions, 2996 flow [2024-06-28 01:18:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:18:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:18:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 01:18:54,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-06-28 01:18:54,491 INFO L175 Difference]: Start difference. First operand has 205 places, 247 transitions, 2440 flow. Second operand 7 states and 185 transitions. [2024-06-28 01:18:54,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 277 transitions, 2996 flow [2024-06-28 01:18:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 277 transitions, 2654 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:18:55,147 INFO L231 Difference]: Finished difference. Result has 201 places, 250 transitions, 2182 flow [2024-06-28 01:18:55,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2182, PETRI_PLACES=201, PETRI_TRANSITIONS=250} [2024-06-28 01:18:55,148 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 145 predicate places. [2024-06-28 01:18:55,148 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 250 transitions, 2182 flow [2024-06-28 01:18:55,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:55,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:55,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:55,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:18:55,148 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:55,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash 476121009, now seen corresponding path program 2 times [2024-06-28 01:18:55,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:55,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379862920] [2024-06-28 01:18:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:55,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:56,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:56,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379862920] [2024-06-28 01:18:56,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379862920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:56,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:56,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:18:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058157007] [2024-06-28 01:18:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:18:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:56,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:18:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:18:56,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:18:56,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 250 transitions, 2182 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:56,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:56,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:18:56,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:57,628 INFO L124 PetriNetUnfolderBase]: 5972/9613 cut-off events. [2024-06-28 01:18:57,628 INFO L125 PetriNetUnfolderBase]: For 563716/563770 co-relation queries the response was YES. [2024-06-28 01:18:57,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60970 conditions, 9613 events. 5972/9613 cut-off events. For 563716/563770 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 63958 event pairs, 1863 based on Foata normal form. 6/9383 useless extension candidates. Maximal degree in co-relation 60880. Up to 8222 conditions per place. [2024-06-28 01:18:57,722 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 218 selfloop transitions, 32 changer transitions 0/295 dead transitions. [2024-06-28 01:18:57,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 295 transitions, 2957 flow [2024-06-28 01:18:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:18:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:18:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:18:57,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975 [2024-06-28 01:18:57,724 INFO L175 Difference]: Start difference. First operand has 201 places, 250 transitions, 2182 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:18:57,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 295 transitions, 2957 flow [2024-06-28 01:18:58,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 295 transitions, 2880 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:18:58,416 INFO L231 Difference]: Finished difference. Result has 206 places, 268 transitions, 2382 flow [2024-06-28 01:18:58,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2382, PETRI_PLACES=206, PETRI_TRANSITIONS=268} [2024-06-28 01:18:58,417 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 150 predicate places. [2024-06-28 01:18:58,417 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 268 transitions, 2382 flow [2024-06-28 01:18:58,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:58,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:58,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:18:58,417 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:58,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1358474102, now seen corresponding path program 2 times [2024-06-28 01:18:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082436283] [2024-06-28 01:18:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:59,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:59,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082436283] [2024-06-28 01:18:59,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082436283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:59,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:59,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:59,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701096725] [2024-06-28 01:18:59,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:59,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:59,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:59,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:18:59,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 268 transitions, 2382 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:59,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:59,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:18:59,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:01,681 INFO L124 PetriNetUnfolderBase]: 6464/10212 cut-off events. [2024-06-28 01:19:01,682 INFO L125 PetriNetUnfolderBase]: For 593552/593582 co-relation queries the response was YES. [2024-06-28 01:19:01,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65274 conditions, 10212 events. 6464/10212 cut-off events. For 593552/593582 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 66718 event pairs, 1936 based on Foata normal form. 24/10031 useless extension candidates. Maximal degree in co-relation 65181. Up to 8792 conditions per place. [2024-06-28 01:19:01,801 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 251 selfloop transitions, 51 changer transitions 0/329 dead transitions. [2024-06-28 01:19:01,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 329 transitions, 3269 flow [2024-06-28 01:19:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:19:01,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:19:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:19:01,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177777777777778 [2024-06-28 01:19:01,803 INFO L175 Difference]: Start difference. First operand has 206 places, 268 transitions, 2382 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:19:01,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 329 transitions, 3269 flow [2024-06-28 01:19:02,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 329 transitions, 3198 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 01:19:02,197 INFO L231 Difference]: Finished difference. Result has 214 places, 278 transitions, 2562 flow [2024-06-28 01:19:02,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2562, PETRI_PLACES=214, PETRI_TRANSITIONS=278} [2024-06-28 01:19:02,197 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 158 predicate places. [2024-06-28 01:19:02,197 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 278 transitions, 2562 flow [2024-06-28 01:19:02,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:02,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:02,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:19:02,198 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:02,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:02,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1347046262, now seen corresponding path program 3 times [2024-06-28 01:19:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148484782] [2024-06-28 01:19:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:03,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148484782] [2024-06-28 01:19:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148484782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:03,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:03,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:19:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77025183] [2024-06-28 01:19:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:03,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:19:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:19:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:19:03,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:19:03,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 278 transitions, 2562 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:03,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:03,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:19:03,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:05,473 INFO L124 PetriNetUnfolderBase]: 6501/10278 cut-off events. [2024-06-28 01:19:05,473 INFO L125 PetriNetUnfolderBase]: For 619490/619522 co-relation queries the response was YES. [2024-06-28 01:19:05,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67168 conditions, 10278 events. 6501/10278 cut-off events. For 619490/619522 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 67291 event pairs, 1852 based on Foata normal form. 26/10085 useless extension candidates. Maximal degree in co-relation 67072. Up to 8687 conditions per place. [2024-06-28 01:19:05,575 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 251 selfloop transitions, 58 changer transitions 0/336 dead transitions. [2024-06-28 01:19:05,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 336 transitions, 3697 flow [2024-06-28 01:19:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:19:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:19:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:19:05,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2024-06-28 01:19:05,577 INFO L175 Difference]: Start difference. First operand has 214 places, 278 transitions, 2562 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:19:05,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 336 transitions, 3697 flow [2024-06-28 01:19:06,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 336 transitions, 3575 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 01:19:06,138 INFO L231 Difference]: Finished difference. Result has 219 places, 282 transitions, 2687 flow [2024-06-28 01:19:06,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2687, PETRI_PLACES=219, PETRI_TRANSITIONS=282} [2024-06-28 01:19:06,139 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 163 predicate places. [2024-06-28 01:19:06,139 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 282 transitions, 2687 flow [2024-06-28 01:19:06,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:06,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:06,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:06,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:19:06,140 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:06,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:06,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1604154604, now seen corresponding path program 4 times [2024-06-28 01:19:06,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:06,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340835960] [2024-06-28 01:19:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:06,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:07,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:07,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340835960] [2024-06-28 01:19:07,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340835960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:07,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:07,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:19:07,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979663545] [2024-06-28 01:19:07,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:07,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:19:07,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:07,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:19:07,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:19:07,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:19:07,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 282 transitions, 2687 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:07,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:07,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:19:07,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:09,283 INFO L124 PetriNetUnfolderBase]: 6538/10326 cut-off events. [2024-06-28 01:19:09,283 INFO L125 PetriNetUnfolderBase]: For 639996/640028 co-relation queries the response was YES. [2024-06-28 01:19:09,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67231 conditions, 10326 events. 6538/10326 cut-off events. For 639996/640028 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 67593 event pairs, 1955 based on Foata normal form. 26/10147 useless extension candidates. Maximal degree in co-relation 67134. Up to 8902 conditions per place. [2024-06-28 01:19:09,398 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 260 selfloop transitions, 49 changer transitions 0/336 dead transitions. [2024-06-28 01:19:09,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 336 transitions, 3541 flow [2024-06-28 01:19:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:19:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:19:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:19:09,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-28 01:19:09,400 INFO L175 Difference]: Start difference. First operand has 219 places, 282 transitions, 2687 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:19:09,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 336 transitions, 3541 flow [2024-06-28 01:19:10,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 336 transitions, 3382 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 01:19:10,209 INFO L231 Difference]: Finished difference. Result has 224 places, 285 transitions, 2718 flow [2024-06-28 01:19:10,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2718, PETRI_PLACES=224, PETRI_TRANSITIONS=285} [2024-06-28 01:19:10,210 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 168 predicate places. [2024-06-28 01:19:10,210 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 285 transitions, 2718 flow [2024-06-28 01:19:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:10,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:10,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:19:10,220 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:10,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash -611479662, now seen corresponding path program 5 times [2024-06-28 01:19:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254466157] [2024-06-28 01:19:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254466157] [2024-06-28 01:19:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254466157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:11,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:19:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960556864] [2024-06-28 01:19:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:19:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:19:11,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:19:11,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:19:11,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 285 transitions, 2718 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:11,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:11,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:19:11,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:13,642 INFO L124 PetriNetUnfolderBase]: 6530/10320 cut-off events. [2024-06-28 01:19:13,642 INFO L125 PetriNetUnfolderBase]: For 645117/645149 co-relation queries the response was YES. [2024-06-28 01:19:13,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66905 conditions, 10320 events. 6530/10320 cut-off events. For 645117/645149 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 67527 event pairs, 1953 based on Foata normal form. 26/10150 useless extension candidates. Maximal degree in co-relation 66805. Up to 8890 conditions per place. [2024-06-28 01:19:13,770 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 259 selfloop transitions, 50 changer transitions 0/336 dead transitions. [2024-06-28 01:19:13,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 336 transitions, 3497 flow [2024-06-28 01:19:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:19:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:19:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:19:13,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:19:13,772 INFO L175 Difference]: Start difference. First operand has 224 places, 285 transitions, 2718 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:19:13,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 336 transitions, 3497 flow [2024-06-28 01:19:14,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 336 transitions, 3338 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:19:14,667 INFO L231 Difference]: Finished difference. Result has 227 places, 285 transitions, 2666 flow [2024-06-28 01:19:14,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2666, PETRI_PLACES=227, PETRI_TRANSITIONS=285} [2024-06-28 01:19:14,668 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 171 predicate places. [2024-06-28 01:19:14,668 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 285 transitions, 2666 flow [2024-06-28 01:19:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:14,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:14,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:19:14,669 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:14,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash -868257219, now seen corresponding path program 11 times [2024-06-28 01:19:14,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:14,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175762892] [2024-06-28 01:19:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175762892] [2024-06-28 01:19:15,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175762892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:15,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:15,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:15,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974361485] [2024-06-28 01:19:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:15,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:15,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:15,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:19:15,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 285 transitions, 2666 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 01:19:15,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:15,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:19:15,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:17,729 INFO L124 PetriNetUnfolderBase]: 7006/11046 cut-off events. [2024-06-28 01:19:17,729 INFO L125 PetriNetUnfolderBase]: For 673453/673453 co-relation queries the response was YES. [2024-06-28 01:19:17,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70521 conditions, 11046 events. 7006/11046 cut-off events. For 673453/673453 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 72121 event pairs, 1853 based on Foata normal form. 4/10846 useless extension candidates. Maximal degree in co-relation 70420. Up to 8195 conditions per place. [2024-06-28 01:19:17,890 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 205 selfloop transitions, 144 changer transitions 0/359 dead transitions. [2024-06-28 01:19:17,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 359 transitions, 4184 flow [2024-06-28 01:19:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-06-28 01:19:17,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:19:17,891 INFO L175 Difference]: Start difference. First operand has 227 places, 285 transitions, 2666 flow. Second operand 10 states and 270 transitions. [2024-06-28 01:19:17,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 359 transitions, 4184 flow [2024-06-28 01:19:18,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 359 transitions, 4025 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 01:19:18,677 INFO L231 Difference]: Finished difference. Result has 226 places, 291 transitions, 2919 flow [2024-06-28 01:19:18,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2919, PETRI_PLACES=226, PETRI_TRANSITIONS=291} [2024-06-28 01:19:18,678 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 170 predicate places. [2024-06-28 01:19:18,678 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 291 transitions, 2919 flow [2024-06-28 01:19:18,678 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 01:19:18,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:18,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:18,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:19:18,679 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:18,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1920611757, now seen corresponding path program 12 times [2024-06-28 01:19:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:18,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502044484] [2024-06-28 01:19:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:19,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502044484] [2024-06-28 01:19:19,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502044484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:19,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:19,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367670705] [2024-06-28 01:19:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:19,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:19,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:19,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:19:19,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 291 transitions, 2919 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 01:19:19,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:19,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:19:19,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:21,912 INFO L124 PetriNetUnfolderBase]: 7052/11126 cut-off events. [2024-06-28 01:19:21,913 INFO L125 PetriNetUnfolderBase]: For 697014/697014 co-relation queries the response was YES. [2024-06-28 01:19:21,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72081 conditions, 11126 events. 7052/11126 cut-off events. For 697014/697014 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 72671 event pairs, 1878 based on Foata normal form. 4/10934 useless extension candidates. Maximal degree in co-relation 71982. Up to 8234 conditions per place. [2024-06-28 01:19:22,043 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 209 selfloop transitions, 144 changer transitions 0/363 dead transitions. [2024-06-28 01:19:22,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 363 transitions, 4405 flow [2024-06-28 01:19:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-28 01:19:22,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542 [2024-06-28 01:19:22,044 INFO L175 Difference]: Start difference. First operand has 226 places, 291 transitions, 2919 flow. Second operand 10 states and 271 transitions. [2024-06-28 01:19:22,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 363 transitions, 4405 flow [2024-06-28 01:19:22,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 363 transitions, 3966 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:22,874 INFO L231 Difference]: Finished difference. Result has 228 places, 294 transitions, 2840 flow [2024-06-28 01:19:22,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2840, PETRI_PLACES=228, PETRI_TRANSITIONS=294} [2024-06-28 01:19:22,875 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 172 predicate places. [2024-06-28 01:19:22,875 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 294 transitions, 2840 flow [2024-06-28 01:19:22,875 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 01:19:22,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:22,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:22,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:19:22,876 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:22,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1927968987, now seen corresponding path program 13 times [2024-06-28 01:19:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11352192] [2024-06-28 01:19:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11352192] [2024-06-28 01:19:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11352192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866141176] [2024-06-28 01:19:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:24,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:19:24,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 294 transitions, 2840 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 01:19:24,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:24,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:19:24,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:26,248 INFO L124 PetriNetUnfolderBase]: 7098/11195 cut-off events. [2024-06-28 01:19:26,249 INFO L125 PetriNetUnfolderBase]: For 710569/710569 co-relation queries the response was YES. [2024-06-28 01:19:26,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72479 conditions, 11195 events. 7098/11195 cut-off events. For 710569/710569 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 73216 event pairs, 1836 based on Foata normal form. 4/11004 useless extension candidates. Maximal degree in co-relation 72379. Up to 8273 conditions per place. [2024-06-28 01:19:26,390 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 198 selfloop transitions, 155 changer transitions 0/363 dead transitions. [2024-06-28 01:19:26,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 363 transitions, 4067 flow [2024-06-28 01:19:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-06-28 01:19:26,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532 [2024-06-28 01:19:26,392 INFO L175 Difference]: Start difference. First operand has 228 places, 294 transitions, 2840 flow. Second operand 10 states and 266 transitions. [2024-06-28 01:19:26,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 363 transitions, 4067 flow [2024-06-28 01:19:27,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 363 transitions, 3762 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:19:27,354 INFO L231 Difference]: Finished difference. Result has 231 places, 297 transitions, 2908 flow [2024-06-28 01:19:27,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2908, PETRI_PLACES=231, PETRI_TRANSITIONS=297} [2024-06-28 01:19:27,370 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 175 predicate places. [2024-06-28 01:19:27,370 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 297 transitions, 2908 flow [2024-06-28 01:19:27,370 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 01:19:27,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:27,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:27,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:19:27,371 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:27,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash -611756709, now seen corresponding path program 14 times [2024-06-28 01:19:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:27,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811037512] [2024-06-28 01:19:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:28,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811037512] [2024-06-28 01:19:28,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811037512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:28,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:28,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:28,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583505935] [2024-06-28 01:19:28,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:28,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:28,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:28,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:19:28,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 297 transitions, 2908 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 01:19:28,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:28,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:19:28,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:30,887 INFO L124 PetriNetUnfolderBase]: 7088/11241 cut-off events. [2024-06-28 01:19:30,888 INFO L125 PetriNetUnfolderBase]: For 720523/720523 co-relation queries the response was YES. [2024-06-28 01:19:30,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72424 conditions, 11241 events. 7088/11241 cut-off events. For 720523/720523 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 74055 event pairs, 1899 based on Foata normal form. 4/11029 useless extension candidates. Maximal degree in co-relation 72323. Up to 8265 conditions per place. [2024-06-28 01:19:31,032 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 194 selfloop transitions, 158 changer transitions 0/362 dead transitions. [2024-06-28 01:19:31,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 362 transitions, 4078 flow [2024-06-28 01:19:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 01:19:31,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528 [2024-06-28 01:19:31,034 INFO L175 Difference]: Start difference. First operand has 231 places, 297 transitions, 2908 flow. Second operand 10 states and 264 transitions. [2024-06-28 01:19:31,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 362 transitions, 4078 flow [2024-06-28 01:19:32,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 362 transitions, 3637 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:32,095 INFO L231 Difference]: Finished difference. Result has 233 places, 297 transitions, 2791 flow [2024-06-28 01:19:32,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2791, PETRI_PLACES=233, PETRI_TRANSITIONS=297} [2024-06-28 01:19:32,096 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 177 predicate places. [2024-06-28 01:19:32,096 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 297 transitions, 2791 flow [2024-06-28 01:19:32,096 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 01:19:32,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:32,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:32,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:19:32,097 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:32,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash -868459029, now seen corresponding path program 15 times [2024-06-28 01:19:32,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:32,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612663459] [2024-06-28 01:19:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:32,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:33,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612663459] [2024-06-28 01:19:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612663459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:33,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:33,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144656175] [2024-06-28 01:19:33,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:33,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:33,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:19:33,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 297 transitions, 2791 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 01:19:33,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:33,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:19:33,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:35,550 INFO L124 PetriNetUnfolderBase]: 7078/11158 cut-off events. [2024-06-28 01:19:35,551 INFO L125 PetriNetUnfolderBase]: For 726025/726025 co-relation queries the response was YES. [2024-06-28 01:19:35,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71791 conditions, 11158 events. 7078/11158 cut-off events. For 726025/726025 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 72870 event pairs, 1836 based on Foata normal form. 4/10967 useless extension candidates. Maximal degree in co-relation 71689. Up to 8257 conditions per place. [2024-06-28 01:19:35,661 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 199 selfloop transitions, 152 changer transitions 0/361 dead transitions. [2024-06-28 01:19:35,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 361 transitions, 3705 flow [2024-06-28 01:19:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-28 01:19:35,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-06-28 01:19:35,663 INFO L175 Difference]: Start difference. First operand has 233 places, 297 transitions, 2791 flow. Second operand 10 states and 265 transitions. [2024-06-28 01:19:35,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 361 transitions, 3705 flow [2024-06-28 01:19:36,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 361 transitions, 3307 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 01:19:36,487 INFO L231 Difference]: Finished difference. Result has 233 places, 297 transitions, 2705 flow [2024-06-28 01:19:36,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2705, PETRI_PLACES=233, PETRI_TRANSITIONS=297} [2024-06-28 01:19:36,488 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 177 predicate places. [2024-06-28 01:19:36,488 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 297 transitions, 2705 flow [2024-06-28 01:19:36,488 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 01:19:36,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:36,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:36,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:19:36,489 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:36,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash 489110815, now seen corresponding path program 2 times [2024-06-28 01:19:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:36,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154583791] [2024-06-28 01:19:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:36,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:37,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:37,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154583791] [2024-06-28 01:19:37,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154583791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:37,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:37,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:19:37,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907186388] [2024-06-28 01:19:37,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:37,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:19:37,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:37,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:19:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:19:37,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:19:37,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 297 transitions, 2705 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:37,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:37,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:19:37,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:39,244 INFO L124 PetriNetUnfolderBase]: 5854/9782 cut-off events. [2024-06-28 01:19:39,244 INFO L125 PetriNetUnfolderBase]: For 729258/729398 co-relation queries the response was YES. [2024-06-28 01:19:39,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64473 conditions, 9782 events. 5854/9782 cut-off events. For 729258/729398 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 68415 event pairs, 1805 based on Foata normal form. 33/9424 useless extension candidates. Maximal degree in co-relation 64370. Up to 7941 conditions per place. [2024-06-28 01:19:39,369 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 234 selfloop transitions, 34 changer transitions 0/330 dead transitions. [2024-06-28 01:19:39,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 330 transitions, 3572 flow [2024-06-28 01:19:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:19:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:19:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:19:39,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-06-28 01:19:39,371 INFO L175 Difference]: Start difference. First operand has 233 places, 297 transitions, 2705 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:19:39,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 330 transitions, 3572 flow [2024-06-28 01:19:40,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 330 transitions, 3238 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:19:40,567 INFO L231 Difference]: Finished difference. Result has 231 places, 305 transitions, 2575 flow [2024-06-28 01:19:40,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2575, PETRI_PLACES=231, PETRI_TRANSITIONS=305} [2024-06-28 01:19:40,568 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 175 predicate places. [2024-06-28 01:19:40,568 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 305 transitions, 2575 flow [2024-06-28 01:19:40,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:40,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:40,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:19:40,568 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:40,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1987940457, now seen corresponding path program 3 times [2024-06-28 01:19:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687577250] [2024-06-28 01:19:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:41,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:41,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687577250] [2024-06-28 01:19:41,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687577250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:41,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:41,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:19:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135543772] [2024-06-28 01:19:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:41,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:19:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:19:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:19:41,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:19:41,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 305 transitions, 2575 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:41,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:41,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:19:41,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:43,313 INFO L124 PetriNetUnfolderBase]: 6249/10343 cut-off events. [2024-06-28 01:19:43,314 INFO L125 PetriNetUnfolderBase]: For 752373/752435 co-relation queries the response was YES. [2024-06-28 01:19:43,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67062 conditions, 10343 events. 6249/10343 cut-off events. For 752373/752435 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 71685 event pairs, 1895 based on Foata normal form. 9/10012 useless extension candidates. Maximal degree in co-relation 66957. Up to 8565 conditions per place. [2024-06-28 01:19:43,434 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 245 selfloop transitions, 45 changer transitions 0/335 dead transitions. [2024-06-28 01:19:43,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 335 transitions, 3485 flow [2024-06-28 01:19:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:19:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:19:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:19:43,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114285714285715 [2024-06-28 01:19:43,436 INFO L175 Difference]: Start difference. First operand has 231 places, 305 transitions, 2575 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:19:43,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 335 transitions, 3485 flow [2024-06-28 01:19:44,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 335 transitions, 3408 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:19:44,083 INFO L231 Difference]: Finished difference. Result has 235 places, 311 transitions, 2712 flow [2024-06-28 01:19:44,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2712, PETRI_PLACES=235, PETRI_TRANSITIONS=311} [2024-06-28 01:19:44,084 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 179 predicate places. [2024-06-28 01:19:44,084 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 311 transitions, 2712 flow [2024-06-28 01:19:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:44,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:44,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:44,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:19:44,084 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:44,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1876248483, now seen corresponding path program 3 times [2024-06-28 01:19:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136951239] [2024-06-28 01:19:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:45,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:45,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136951239] [2024-06-28 01:19:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136951239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:19:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960025342] [2024-06-28 01:19:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:45,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:19:45,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:19:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:19:45,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:19:45,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 311 transitions, 2712 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:45,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:45,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:19:45,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:46,964 INFO L124 PetriNetUnfolderBase]: 5871/9780 cut-off events. [2024-06-28 01:19:46,964 INFO L125 PetriNetUnfolderBase]: For 770475/770597 co-relation queries the response was YES. [2024-06-28 01:19:47,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65336 conditions, 9780 events. 5871/9780 cut-off events. For 770475/770597 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 68084 event pairs, 1806 based on Foata normal form. 31/9388 useless extension candidates. Maximal degree in co-relation 65229. Up to 7999 conditions per place. [2024-06-28 01:19:47,092 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 245 selfloop transitions, 27 changer transitions 0/336 dead transitions. [2024-06-28 01:19:47,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 336 transitions, 3344 flow [2024-06-28 01:19:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:19:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:19:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:19:47,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:19:47,093 INFO L175 Difference]: Start difference. First operand has 235 places, 311 transitions, 2712 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:19:47,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 336 transitions, 3344 flow [2024-06-28 01:19:48,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 336 transitions, 3235 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:19:48,154 INFO L231 Difference]: Finished difference. Result has 239 places, 312 transitions, 2672 flow [2024-06-28 01:19:48,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2672, PETRI_PLACES=239, PETRI_TRANSITIONS=312} [2024-06-28 01:19:48,154 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 183 predicate places. [2024-06-28 01:19:48,154 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 312 transitions, 2672 flow [2024-06-28 01:19:48,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:48,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:48,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:48,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:19:48,155 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:48,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1941403659, now seen corresponding path program 4 times [2024-06-28 01:19:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:48,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120621785] [2024-06-28 01:19:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:49,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120621785] [2024-06-28 01:19:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120621785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:19:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391353453] [2024-06-28 01:19:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:49,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:19:49,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:49,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:19:49,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:19:49,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:19:49,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 312 transitions, 2672 flow. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:49,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:49,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:19:49,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:50,836 INFO L124 PetriNetUnfolderBase]: 6327/10232 cut-off events. [2024-06-28 01:19:50,836 INFO L125 PetriNetUnfolderBase]: For 788211/788267 co-relation queries the response was YES. [2024-06-28 01:19:50,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68647 conditions, 10232 events. 6327/10232 cut-off events. For 788211/788267 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 68893 event pairs, 1896 based on Foata normal form. 5/9960 useless extension candidates. Maximal degree in co-relation 68538. Up to 8683 conditions per place. [2024-06-28 01:19:50,980 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 267 selfloop transitions, 50 changer transitions 0/362 dead transitions. [2024-06-28 01:19:50,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 362 transitions, 3585 flow [2024-06-28 01:19:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:19:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:19:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:19:50,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:19:50,981 INFO L175 Difference]: Start difference. First operand has 239 places, 312 transitions, 2672 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:19:50,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 362 transitions, 3585 flow [2024-06-28 01:19:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 362 transitions, 3489 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:19:51,921 INFO L231 Difference]: Finished difference. Result has 244 places, 330 transitions, 2912 flow [2024-06-28 01:19:51,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2912, PETRI_PLACES=244, PETRI_TRANSITIONS=330} [2024-06-28 01:19:51,922 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 188 predicate places. [2024-06-28 01:19:51,922 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 330 transitions, 2912 flow [2024-06-28 01:19:51,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:51,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:51,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:19:51,923 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:51,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2083729375, now seen corresponding path program 1 times [2024-06-28 01:19:51,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:51,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205831219] [2024-06-28 01:19:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:52,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:52,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205831219] [2024-06-28 01:19:52,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205831219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:52,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:52,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:19:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721773354] [2024-06-28 01:19:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:52,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:19:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:19:52,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:19:52,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:19:52,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 330 transitions, 2912 flow. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:52,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:52,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:19:52,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:54,699 INFO L124 PetriNetUnfolderBase]: 6367/10344 cut-off events. [2024-06-28 01:19:54,700 INFO L125 PetriNetUnfolderBase]: For 813013/813039 co-relation queries the response was YES. [2024-06-28 01:19:54,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70021 conditions, 10344 events. 6367/10344 cut-off events. For 813013/813039 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 70143 event pairs, 1849 based on Foata normal form. 4/10116 useless extension candidates. Maximal degree in co-relation 69909. Up to 8801 conditions per place. [2024-06-28 01:19:54,830 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 308 selfloop transitions, 18 changer transitions 0/363 dead transitions. [2024-06-28 01:19:54,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 363 transitions, 3731 flow [2024-06-28 01:19:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:19:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:19:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:19:54,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114285714285715 [2024-06-28 01:19:54,831 INFO L175 Difference]: Start difference. First operand has 244 places, 330 transitions, 2912 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:19:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 363 transitions, 3731 flow [2024-06-28 01:19:56,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 363 transitions, 3630 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:19:56,032 INFO L231 Difference]: Finished difference. Result has 247 places, 337 transitions, 2955 flow [2024-06-28 01:19:56,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2955, PETRI_PLACES=247, PETRI_TRANSITIONS=337} [2024-06-28 01:19:56,032 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 191 predicate places. [2024-06-28 01:19:56,032 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 337 transitions, 2955 flow [2024-06-28 01:19:56,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:56,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:56,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:56,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:19:56,033 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:56,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1381638121, now seen corresponding path program 1 times [2024-06-28 01:19:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:56,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091168295] [2024-06-28 01:19:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:56,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:57,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:57,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091168295] [2024-06-28 01:19:57,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091168295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:57,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:57,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:19:57,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961100907] [2024-06-28 01:19:57,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:57,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:19:57,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:57,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:19:57,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:19:57,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:19:57,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 337 transitions, 2955 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:57,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:57,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:19:57,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:59,212 INFO L124 PetriNetUnfolderBase]: 6378/10364 cut-off events. [2024-06-28 01:19:59,213 INFO L125 PetriNetUnfolderBase]: For 838554/838580 co-relation queries the response was YES. [2024-06-28 01:19:59,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71437 conditions, 10364 events. 6378/10364 cut-off events. For 838554/838580 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 70269 event pairs, 1833 based on Foata normal form. 5/10147 useless extension candidates. Maximal degree in co-relation 71324. Up to 8816 conditions per place. [2024-06-28 01:19:59,325 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 311 selfloop transitions, 17 changer transitions 0/365 dead transitions. [2024-06-28 01:19:59,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 365 transitions, 3741 flow [2024-06-28 01:19:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:19:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:19:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:19:59,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:19:59,327 INFO L175 Difference]: Start difference. First operand has 247 places, 337 transitions, 2955 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:19:59,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 365 transitions, 3741 flow [2024-06-28 01:20:00,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 365 transitions, 3662 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:20:00,721 INFO L231 Difference]: Finished difference. Result has 250 places, 340 transitions, 2964 flow [2024-06-28 01:20:00,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2964, PETRI_PLACES=250, PETRI_TRANSITIONS=340} [2024-06-28 01:20:00,722 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 194 predicate places. [2024-06-28 01:20:00,722 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 340 transitions, 2964 flow [2024-06-28 01:20:00,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:00,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:00,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:00,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:20:00,723 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:00,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1381637873, now seen corresponding path program 2 times [2024-06-28 01:20:00,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:00,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361606312] [2024-06-28 01:20:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361606312] [2024-06-28 01:20:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361606312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:01,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:20:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070204351] [2024-06-28 01:20:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:20:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:20:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:20:01,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:20:01,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 340 transitions, 2964 flow. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:01,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:01,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:20:01,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:03,601 INFO L124 PetriNetUnfolderBase]: 6412/10418 cut-off events. [2024-06-28 01:20:03,601 INFO L125 PetriNetUnfolderBase]: For 855949/855975 co-relation queries the response was YES. [2024-06-28 01:20:03,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72649 conditions, 10418 events. 6412/10418 cut-off events. For 855949/855975 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 70681 event pairs, 1835 based on Foata normal form. 4/10199 useless extension candidates. Maximal degree in co-relation 72535. Up to 8829 conditions per place. [2024-06-28 01:20:03,745 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 309 selfloop transitions, 23 changer transitions 0/369 dead transitions. [2024-06-28 01:20:03,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 369 transitions, 3780 flow [2024-06-28 01:20:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 01:20:03,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 01:20:03,746 INFO L175 Difference]: Start difference. First operand has 250 places, 340 transitions, 2964 flow. Second operand 7 states and 180 transitions. [2024-06-28 01:20:03,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 369 transitions, 3780 flow [2024-06-28 01:20:05,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 369 transitions, 3714 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:05,260 INFO L231 Difference]: Finished difference. Result has 252 places, 343 transitions, 3014 flow [2024-06-28 01:20:05,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3014, PETRI_PLACES=252, PETRI_TRANSITIONS=343} [2024-06-28 01:20:05,260 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 196 predicate places. [2024-06-28 01:20:05,260 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 343 transitions, 3014 flow [2024-06-28 01:20:05,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:05,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:05,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:05,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:20:05,261 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:05,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1387230893, now seen corresponding path program 3 times [2024-06-28 01:20:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:05,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194926019] [2024-06-28 01:20:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:05,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:06,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:06,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194926019] [2024-06-28 01:20:06,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194926019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:06,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:06,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:06,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672895020] [2024-06-28 01:20:06,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:06,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:20:06,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 343 transitions, 3014 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:06,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:06,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:20:06,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:08,355 INFO L124 PetriNetUnfolderBase]: 6457/10682 cut-off events. [2024-06-28 01:20:08,356 INFO L125 PetriNetUnfolderBase]: For 877526/877569 co-relation queries the response was YES. [2024-06-28 01:20:08,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74055 conditions, 10682 events. 6457/10682 cut-off events. For 877526/877569 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 74340 event pairs, 1846 based on Foata normal form. 6/10397 useless extension candidates. Maximal degree in co-relation 73940. Up to 8846 conditions per place. [2024-06-28 01:20:08,528 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 304 selfloop transitions, 30 changer transitions 0/371 dead transitions. [2024-06-28 01:20:08,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 371 transitions, 3844 flow [2024-06-28 01:20:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 01:20:08,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 01:20:08,529 INFO L175 Difference]: Start difference. First operand has 252 places, 343 transitions, 3014 flow. Second operand 7 states and 180 transitions. [2024-06-28 01:20:08,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 371 transitions, 3844 flow [2024-06-28 01:20:09,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 371 transitions, 3750 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:09,831 INFO L231 Difference]: Finished difference. Result has 254 places, 346 transitions, 3056 flow [2024-06-28 01:20:09,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3056, PETRI_PLACES=254, PETRI_TRANSITIONS=346} [2024-06-28 01:20:09,832 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 198 predicate places. [2024-06-28 01:20:09,832 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 346 transitions, 3056 flow [2024-06-28 01:20:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:09,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:09,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:09,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:20:09,832 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:09,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1876002467, now seen corresponding path program 2 times [2024-06-28 01:20:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:09,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6267037] [2024-06-28 01:20:09,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:09,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:11,148 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 01:20:11,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6267037] [2024-06-28 01:20:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6267037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:11,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:11,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:11,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051251824] [2024-06-28 01:20:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:11,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:11,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:20:11,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 346 transitions, 3056 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:11,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:11,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:20:11,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:13,010 INFO L124 PetriNetUnfolderBase]: 6491/10746 cut-off events. [2024-06-28 01:20:13,011 INFO L125 PetriNetUnfolderBase]: For 903633/903676 co-relation queries the response was YES. [2024-06-28 01:20:13,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75267 conditions, 10746 events. 6491/10746 cut-off events. For 903633/903676 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 75034 event pairs, 1843 based on Foata normal form. 11/10461 useless extension candidates. Maximal degree in co-relation 75151. Up to 8947 conditions per place. [2024-06-28 01:20:13,176 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 314 selfloop transitions, 22 changer transitions 0/373 dead transitions. [2024-06-28 01:20:13,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 373 transitions, 3872 flow [2024-06-28 01:20:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:20:13,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:20:13,177 INFO L175 Difference]: Start difference. First operand has 254 places, 346 transitions, 3056 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:20:13,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 373 transitions, 3872 flow [2024-06-28 01:20:14,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 373 transitions, 3758 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:14,562 INFO L231 Difference]: Finished difference. Result has 256 places, 349 transitions, 3050 flow [2024-06-28 01:20:14,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2942, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3050, PETRI_PLACES=256, PETRI_TRANSITIONS=349} [2024-06-28 01:20:14,563 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 200 predicate places. [2024-06-28 01:20:14,563 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 349 transitions, 3050 flow [2024-06-28 01:20:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:14,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:14,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:14,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:20:14,564 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:14,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1875705797, now seen corresponding path program 3 times [2024-06-28 01:20:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859450059] [2024-06-28 01:20:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:15,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:15,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859450059] [2024-06-28 01:20:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859450059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:15,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119229187] [2024-06-28 01:20:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:15,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:15,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:20:15,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 349 transitions, 3050 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:15,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:20:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:17,555 INFO L124 PetriNetUnfolderBase]: 6508/10854 cut-off events. [2024-06-28 01:20:17,555 INFO L125 PetriNetUnfolderBase]: For 913992/914035 co-relation queries the response was YES. [2024-06-28 01:20:17,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76008 conditions, 10854 events. 6508/10854 cut-off events. For 913992/914035 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 76437 event pairs, 1835 based on Foata normal form. 10/10560 useless extension candidates. Maximal degree in co-relation 75891. Up to 8945 conditions per place. [2024-06-28 01:20:17,715 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 315 selfloop transitions, 30 changer transitions 0/382 dead transitions. [2024-06-28 01:20:17,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 382 transitions, 3956 flow [2024-06-28 01:20:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:20:17,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:20:17,716 INFO L175 Difference]: Start difference. First operand has 256 places, 349 transitions, 3050 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:20:17,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 382 transitions, 3956 flow [2024-06-28 01:20:19,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 382 transitions, 3826 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:19,038 INFO L231 Difference]: Finished difference. Result has 259 places, 359 transitions, 3143 flow [2024-06-28 01:20:19,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3143, PETRI_PLACES=259, PETRI_TRANSITIONS=359} [2024-06-28 01:20:19,039 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 203 predicate places. [2024-06-28 01:20:19,039 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 359 transitions, 3143 flow [2024-06-28 01:20:19,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:19,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:19,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:19,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:20:19,040 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:19,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 239203440, now seen corresponding path program 1 times [2024-06-28 01:20:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:19,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386912885] [2024-06-28 01:20:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:19,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:20,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:20,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386912885] [2024-06-28 01:20:20,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386912885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:20,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:20,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:20:20,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761381888] [2024-06-28 01:20:20,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:20,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:20:20,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:20:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:20:20,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:20:20,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 359 transitions, 3143 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 01:20:20,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:20,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:20:20,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:22,945 INFO L124 PetriNetUnfolderBase]: 7470/11855 cut-off events. [2024-06-28 01:20:22,945 INFO L125 PetriNetUnfolderBase]: For 966639/966657 co-relation queries the response was YES. [2024-06-28 01:20:23,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83989 conditions, 11855 events. 7470/11855 cut-off events. For 966639/966657 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 78841 event pairs, 1693 based on Foata normal form. 22/11643 useless extension candidates. Maximal degree in co-relation 83870. Up to 10290 conditions per place. [2024-06-28 01:20:23,090 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 386 selfloop transitions, 47 changer transitions 0/443 dead transitions. [2024-06-28 01:20:23,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 443 transitions, 4711 flow [2024-06-28 01:20:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-28 01:20:23,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364 [2024-06-28 01:20:23,092 INFO L175 Difference]: Start difference. First operand has 259 places, 359 transitions, 3143 flow. Second operand 11 states and 284 transitions. [2024-06-28 01:20:23,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 443 transitions, 4711 flow [2024-06-28 01:20:24,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 443 transitions, 4644 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:20:24,432 INFO L231 Difference]: Finished difference. Result has 267 places, 363 transitions, 3317 flow [2024-06-28 01:20:24,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3317, PETRI_PLACES=267, PETRI_TRANSITIONS=363} [2024-06-28 01:20:24,433 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 211 predicate places. [2024-06-28 01:20:24,433 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 363 transitions, 3317 flow [2024-06-28 01:20:24,433 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 01:20:24,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:24,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:24,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:20:24,434 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:24,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash 242060400, now seen corresponding path program 2 times [2024-06-28 01:20:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102977295] [2024-06-28 01:20:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:24,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:25,576 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 01:20:25,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:25,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102977295] [2024-06-28 01:20:25,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102977295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:25,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:25,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:20:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450908760] [2024-06-28 01:20:25,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:25,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:20:25,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:25,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:20:25,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:20:25,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:20:25,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 363 transitions, 3317 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 01:20:25,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:25,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:20:25,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:28,407 INFO L124 PetriNetUnfolderBase]: 7462/11795 cut-off events. [2024-06-28 01:20:28,407 INFO L125 PetriNetUnfolderBase]: For 980526/980544 co-relation queries the response was YES. [2024-06-28 01:20:28,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84298 conditions, 11795 events. 7462/11795 cut-off events. For 980526/980544 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 78022 event pairs, 2014 based on Foata normal form. 22/11595 useless extension candidates. Maximal degree in co-relation 84177. Up to 10373 conditions per place. [2024-06-28 01:20:28,542 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 379 selfloop transitions, 43 changer transitions 0/432 dead transitions. [2024-06-28 01:20:28,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 432 transitions, 4407 flow [2024-06-28 01:20:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:20:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:20:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:20:28,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514 [2024-06-28 01:20:28,543 INFO L175 Difference]: Start difference. First operand has 267 places, 363 transitions, 3317 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:20:28,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 432 transitions, 4407 flow [2024-06-28 01:20:29,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 432 transitions, 4227 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 01:20:29,881 INFO L231 Difference]: Finished difference. Result has 270 places, 363 transitions, 3230 flow [2024-06-28 01:20:29,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3230, PETRI_PLACES=270, PETRI_TRANSITIONS=363} [2024-06-28 01:20:29,882 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 214 predicate places. [2024-06-28 01:20:29,882 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 363 transitions, 3230 flow [2024-06-28 01:20:29,882 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 01:20:29,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:29,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:20:29,883 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:29,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash 357351570, now seen corresponding path program 3 times [2024-06-28 01:20:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:29,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830832279] [2024-06-28 01:20:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:29,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:30,945 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 01:20:30,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:30,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830832279] [2024-06-28 01:20:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830832279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:30,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:30,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:20:30,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125057117] [2024-06-28 01:20:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:30,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:20:30,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:20:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:20:31,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:20:31,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 363 transitions, 3230 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 01:20:31,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:31,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:20:31,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:33,565 INFO L124 PetriNetUnfolderBase]: 7499/11848 cut-off events. [2024-06-28 01:20:33,566 INFO L125 PetriNetUnfolderBase]: For 1003671/1003698 co-relation queries the response was YES. [2024-06-28 01:20:33,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84493 conditions, 11848 events. 7499/11848 cut-off events. For 1003671/1003698 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 78416 event pairs, 1974 based on Foata normal form. 28/11654 useless extension candidates. Maximal degree in co-relation 84370. Up to 10166 conditions per place. [2024-06-28 01:20:33,769 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 349 selfloop transitions, 74 changer transitions 0/433 dead transitions. [2024-06-28 01:20:33,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 433 transitions, 4408 flow [2024-06-28 01:20:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:20:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:20:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-28 01:20:33,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:20:33,770 INFO L175 Difference]: Start difference. First operand has 270 places, 363 transitions, 3230 flow. Second operand 10 states and 260 transitions. [2024-06-28 01:20:33,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 433 transitions, 4408 flow [2024-06-28 01:20:35,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 433 transitions, 4317 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:35,461 INFO L231 Difference]: Finished difference. Result has 271 places, 365 transitions, 3370 flow [2024-06-28 01:20:35,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3370, PETRI_PLACES=271, PETRI_TRANSITIONS=365} [2024-06-28 01:20:35,463 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 215 predicate places. [2024-06-28 01:20:35,463 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 365 transitions, 3370 flow [2024-06-28 01:20:35,463 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 01:20:35,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:35,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:35,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:20:35,464 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:35,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash 522990704, now seen corresponding path program 4 times [2024-06-28 01:20:35,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120952125] [2024-06-28 01:20:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:35,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:36,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:36,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120952125] [2024-06-28 01:20:36,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120952125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:36,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:36,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:20:36,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961186866] [2024-06-28 01:20:36,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:36,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:20:36,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:36,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:20:36,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:20:36,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:20:36,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 365 transitions, 3370 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 01:20:36,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:36,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:20:36,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:39,277 INFO L124 PetriNetUnfolderBase]: 7536/11913 cut-off events. [2024-06-28 01:20:39,278 INFO L125 PetriNetUnfolderBase]: For 1035377/1035404 co-relation queries the response was YES. [2024-06-28 01:20:39,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86080 conditions, 11913 events. 7536/11913 cut-off events. For 1035377/1035404 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 78995 event pairs, 1978 based on Foata normal form. 28/11717 useless extension candidates. Maximal degree in co-relation 85956. Up to 10221 conditions per place. [2024-06-28 01:20:39,431 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 352 selfloop transitions, 71 changer transitions 0/433 dead transitions. [2024-06-28 01:20:39,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 433 transitions, 4546 flow [2024-06-28 01:20:39,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:20:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:20:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-28 01:20:39,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-28 01:20:39,433 INFO L175 Difference]: Start difference. First operand has 271 places, 365 transitions, 3370 flow. Second operand 10 states and 258 transitions. [2024-06-28 01:20:39,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 433 transitions, 4546 flow [2024-06-28 01:20:40,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 433 transitions, 4333 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 01:20:40,929 INFO L231 Difference]: Finished difference. Result has 273 places, 367 transitions, 3386 flow [2024-06-28 01:20:40,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3386, PETRI_PLACES=273, PETRI_TRANSITIONS=367} [2024-06-28 01:20:40,930 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 217 predicate places. [2024-06-28 01:20:40,930 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 367 transitions, 3386 flow [2024-06-28 01:20:40,930 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 01:20:40,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:40,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:40,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:20:40,931 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:40,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1366543460, now seen corresponding path program 1 times [2024-06-28 01:20:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168395380] [2024-06-28 01:20:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:40,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:41,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:41,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168395380] [2024-06-28 01:20:41,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168395380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:41,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:41,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:20:41,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810205236] [2024-06-28 01:20:41,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:41,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:20:41,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:41,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:20:41,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:20:42,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:20:42,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 367 transitions, 3386 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 01:20:42,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:42,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:20:42,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:44,625 INFO L124 PetriNetUnfolderBase]: 7573/11957 cut-off events. [2024-06-28 01:20:44,626 INFO L125 PetriNetUnfolderBase]: For 1063099/1063126 co-relation queries the response was YES. [2024-06-28 01:20:44,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86817 conditions, 11957 events. 7573/11957 cut-off events. For 1063099/1063126 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 79070 event pairs, 1856 based on Foata normal form. 24/11760 useless extension candidates. Maximal degree in co-relation 86692. Up to 10095 conditions per place. [2024-06-28 01:20:44,771 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 340 selfloop transitions, 89 changer transitions 0/439 dead transitions. [2024-06-28 01:20:44,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 439 transitions, 4592 flow [2024-06-28 01:20:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:20:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:20:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-28 01:20:44,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:20:44,773 INFO L175 Difference]: Start difference. First operand has 273 places, 367 transitions, 3386 flow. Second operand 10 states and 260 transitions. [2024-06-28 01:20:44,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 439 transitions, 4592 flow [2024-06-28 01:20:46,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 439 transitions, 4381 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 01:20:46,497 INFO L231 Difference]: Finished difference. Result has 276 places, 372 transitions, 3452 flow [2024-06-28 01:20:46,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3452, PETRI_PLACES=276, PETRI_TRANSITIONS=372} [2024-06-28 01:20:46,498 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 220 predicate places. [2024-06-28 01:20:46,498 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 372 transitions, 3452 flow [2024-06-28 01:20:46,498 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 01:20:46,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:46,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:46,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:20:46,498 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:46,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1082024410, now seen corresponding path program 1 times [2024-06-28 01:20:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:46,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024324124] [2024-06-28 01:20:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:47,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:47,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024324124] [2024-06-28 01:20:47,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024324124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:47,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:47,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:20:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098652521] [2024-06-28 01:20:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:47,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:20:47,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:20:47,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:20:47,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:20:47,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 372 transitions, 3452 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:47,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:47,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:20:47,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:49,611 INFO L124 PetriNetUnfolderBase]: 6711/10850 cut-off events. [2024-06-28 01:20:49,611 INFO L125 PetriNetUnfolderBase]: For 1061826/1061876 co-relation queries the response was YES. [2024-06-28 01:20:49,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81848 conditions, 10850 events. 6711/10850 cut-off events. For 1061826/1061876 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 73776 event pairs, 1820 based on Foata normal form. 34/10595 useless extension candidates. Maximal degree in co-relation 81721. Up to 9133 conditions per place. [2024-06-28 01:20:49,796 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 329 selfloop transitions, 39 changer transitions 0/422 dead transitions. [2024-06-28 01:20:49,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 422 transitions, 4443 flow [2024-06-28 01:20:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 01:20:49,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-06-28 01:20:49,798 INFO L175 Difference]: Start difference. First operand has 276 places, 372 transitions, 3452 flow. Second operand 8 states and 212 transitions. [2024-06-28 01:20:49,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 422 transitions, 4443 flow [2024-06-28 01:20:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 422 transitions, 4208 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:20:51,400 INFO L231 Difference]: Finished difference. Result has 278 places, 381 transitions, 3445 flow [2024-06-28 01:20:51,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3445, PETRI_PLACES=278, PETRI_TRANSITIONS=381} [2024-06-28 01:20:51,401 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 222 predicate places. [2024-06-28 01:20:51,401 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 381 transitions, 3445 flow [2024-06-28 01:20:51,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:51,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:51,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:51,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:20:51,402 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:51,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:51,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1874417748, now seen corresponding path program 2 times [2024-06-28 01:20:51,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:51,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105584139] [2024-06-28 01:20:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:52,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105584139] [2024-06-28 01:20:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105584139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:52,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:52,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:20:52,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989232125] [2024-06-28 01:20:52,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:52,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:20:52,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:20:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:20:52,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:20:52,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 381 transitions, 3445 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:52,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:52,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:20:52,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:54,861 INFO L124 PetriNetUnfolderBase]: 6728/10892 cut-off events. [2024-06-28 01:20:54,861 INFO L125 PetriNetUnfolderBase]: For 1084820/1084874 co-relation queries the response was YES. [2024-06-28 01:20:54,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82777 conditions, 10892 events. 6728/10892 cut-off events. For 1084820/1084874 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 74110 event pairs, 1818 based on Foata normal form. 35/10648 useless extension candidates. Maximal degree in co-relation 82648. Up to 9106 conditions per place. [2024-06-28 01:20:55,015 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 321 selfloop transitions, 47 changer transitions 0/422 dead transitions. [2024-06-28 01:20:55,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 422 transitions, 4395 flow [2024-06-28 01:20:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:20:55,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-28 01:20:55,016 INFO L175 Difference]: Start difference. First operand has 278 places, 381 transitions, 3445 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:20:55,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 422 transitions, 4395 flow [2024-06-28 01:20:56,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 422 transitions, 4262 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:56,630 INFO L231 Difference]: Finished difference. Result has 281 places, 384 transitions, 3492 flow [2024-06-28 01:20:56,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3312, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3492, PETRI_PLACES=281, PETRI_TRANSITIONS=384} [2024-06-28 01:20:56,631 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 225 predicate places. [2024-06-28 01:20:56,631 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 384 transitions, 3492 flow [2024-06-28 01:20:56,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:56,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:56,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:56,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:20:56,632 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:56,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1862799723, now seen corresponding path program 1 times [2024-06-28 01:20:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:56,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564139006] [2024-06-28 01:20:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:57,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564139006] [2024-06-28 01:20:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564139006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:57,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:20:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697025891] [2024-06-28 01:20:57,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:57,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:20:57,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:20:57,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:20:57,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:20:57,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 384 transitions, 3492 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:57,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:57,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:20:57,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:00,096 INFO L124 PetriNetUnfolderBase]: 6745/10914 cut-off events. [2024-06-28 01:21:00,097 INFO L125 PetriNetUnfolderBase]: For 1112691/1112747 co-relation queries the response was YES. [2024-06-28 01:21:00,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83787 conditions, 10914 events. 6745/10914 cut-off events. For 1112691/1112747 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 74336 event pairs, 1820 based on Foata normal form. 33/10666 useless extension candidates. Maximal degree in co-relation 83657. Up to 9179 conditions per place. [2024-06-28 01:21:00,253 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 328 selfloop transitions, 42 changer transitions 0/424 dead transitions. [2024-06-28 01:21:00,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 424 transitions, 4426 flow [2024-06-28 01:21:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:21:00,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175 [2024-06-28 01:21:00,255 INFO L175 Difference]: Start difference. First operand has 281 places, 384 transitions, 3492 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:21:00,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 424 transitions, 4426 flow [2024-06-28 01:21:01,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 424 transitions, 4272 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:01,948 INFO L231 Difference]: Finished difference. Result has 283 places, 387 transitions, 3492 flow [2024-06-28 01:21:01,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3492, PETRI_PLACES=283, PETRI_TRANSITIONS=387} [2024-06-28 01:21:01,949 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 227 predicate places. [2024-06-28 01:21:01,949 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 387 transitions, 3492 flow [2024-06-28 01:21:01,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:01,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:01,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:01,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:21:01,949 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:01,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:01,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1087744282, now seen corresponding path program 1 times [2024-06-28 01:21:01,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:01,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399326653] [2024-06-28 01:21:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:01,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:02,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399326653] [2024-06-28 01:21:02,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399326653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:02,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:02,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:02,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963583815] [2024-06-28 01:21:02,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:02,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:02,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:02,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:02,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:02,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:21:02,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 387 transitions, 3492 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:02,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:02,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:21:02,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:05,087 INFO L124 PetriNetUnfolderBase]: 7335/11653 cut-off events. [2024-06-28 01:21:05,087 INFO L125 PetriNetUnfolderBase]: For 1152001/1152040 co-relation queries the response was YES. [2024-06-28 01:21:05,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88752 conditions, 11653 events. 7335/11653 cut-off events. For 1152001/1152040 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 77998 event pairs, 1921 based on Foata normal form. 29/11441 useless extension candidates. Maximal degree in co-relation 88621. Up to 10121 conditions per place. [2024-06-28 01:21:05,550 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 362 selfloop transitions, 31 changer transitions 0/428 dead transitions. [2024-06-28 01:21:05,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 428 transitions, 4562 flow [2024-06-28 01:21:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:21:05,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:21:05,551 INFO L175 Difference]: Start difference. First operand has 283 places, 387 transitions, 3492 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:21:05,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 428 transitions, 4562 flow [2024-06-28 01:21:07,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 428 transitions, 4434 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:07,424 INFO L231 Difference]: Finished difference. Result has 286 places, 398 transitions, 3654 flow [2024-06-28 01:21:07,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3654, PETRI_PLACES=286, PETRI_TRANSITIONS=398} [2024-06-28 01:21:07,425 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 230 predicate places. [2024-06-28 01:21:07,425 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 398 transitions, 3654 flow [2024-06-28 01:21:07,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:07,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:07,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:07,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:21:07,425 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:07,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:07,426 INFO L85 PathProgramCache]: Analyzing trace with hash -389542412, now seen corresponding path program 2 times [2024-06-28 01:21:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:07,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530687872] [2024-06-28 01:21:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:07,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:08,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530687872] [2024-06-28 01:21:08,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530687872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:08,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:08,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986866863] [2024-06-28 01:21:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:08,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:08,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:21:08,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 398 transitions, 3654 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:08,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:08,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:21:08,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:10,693 INFO L124 PetriNetUnfolderBase]: 7372/11707 cut-off events. [2024-06-28 01:21:10,693 INFO L125 PetriNetUnfolderBase]: For 1192458/1192497 co-relation queries the response was YES. [2024-06-28 01:21:10,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91283 conditions, 11707 events. 7372/11707 cut-off events. For 1192458/1192497 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 78331 event pairs, 1913 based on Foata normal form. 29/11494 useless extension candidates. Maximal degree in co-relation 91149. Up to 10111 conditions per place. [2024-06-28 01:21:10,881 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 356 selfloop transitions, 43 changer transitions 0/434 dead transitions. [2024-06-28 01:21:10,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 434 transitions, 4926 flow [2024-06-28 01:21:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:21:10,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:21:10,883 INFO L175 Difference]: Start difference. First operand has 286 places, 398 transitions, 3654 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:21:10,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 434 transitions, 4926 flow [2024-06-28 01:21:12,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 434 transitions, 4796 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:12,964 INFO L231 Difference]: Finished difference. Result has 290 places, 404 transitions, 3796 flow [2024-06-28 01:21:12,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3796, PETRI_PLACES=290, PETRI_TRANSITIONS=404} [2024-06-28 01:21:12,965 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 234 predicate places. [2024-06-28 01:21:12,965 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 404 transitions, 3796 flow [2024-06-28 01:21:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:12,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:12,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:12,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:21:12,966 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:12,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash -323071238, now seen corresponding path program 5 times [2024-06-28 01:21:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:12,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801862334] [2024-06-28 01:21:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:14,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:14,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801862334] [2024-06-28 01:21:14,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801862334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:14,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:14,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:21:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492727973] [2024-06-28 01:21:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:14,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:21:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:21:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:21:14,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:21:14,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 404 transitions, 3796 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 01:21:14,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:14,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:21:14,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:17,083 INFO L124 PetriNetUnfolderBase]: 7749/12262 cut-off events. [2024-06-28 01:21:17,083 INFO L125 PetriNetUnfolderBase]: For 1245656/1245665 co-relation queries the response was YES. [2024-06-28 01:21:17,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95736 conditions, 12262 events. 7749/12262 cut-off events. For 1245656/1245665 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 81640 event pairs, 1941 based on Foata normal form. 10/12037 useless extension candidates. Maximal degree in co-relation 95601. Up to 10519 conditions per place. [2024-06-28 01:21:17,288 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 375 selfloop transitions, 82 changer transitions 0/467 dead transitions. [2024-06-28 01:21:17,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 467 transitions, 5062 flow [2024-06-28 01:21:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 01:21:17,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512 [2024-06-28 01:21:17,290 INFO L175 Difference]: Start difference. First operand has 290 places, 404 transitions, 3796 flow. Second operand 10 states and 256 transitions. [2024-06-28 01:21:17,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 467 transitions, 5062 flow [2024-06-28 01:21:19,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 467 transitions, 4937 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:19,476 INFO L231 Difference]: Finished difference. Result has 297 places, 406 transitions, 3932 flow [2024-06-28 01:21:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3932, PETRI_PLACES=297, PETRI_TRANSITIONS=406} [2024-06-28 01:21:19,477 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 241 predicate places. [2024-06-28 01:21:19,477 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 406 transitions, 3932 flow [2024-06-28 01:21:19,477 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 01:21:19,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:19,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:19,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:21:19,478 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:19,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1211269422, now seen corresponding path program 2 times [2024-06-28 01:21:19,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:19,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547777232] [2024-06-28 01:21:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:19,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:20,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:20,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547777232] [2024-06-28 01:21:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547777232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:20,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:20,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:21:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102987677] [2024-06-28 01:21:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:21:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:21:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:21:20,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:21:20,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 406 transitions, 3932 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 01:21:20,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:20,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:21:20,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:23,594 INFO L124 PetriNetUnfolderBase]: 7786/12303 cut-off events. [2024-06-28 01:21:23,594 INFO L125 PetriNetUnfolderBase]: For 1279277/1279286 co-relation queries the response was YES. [2024-06-28 01:21:23,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97184 conditions, 12303 events. 7786/12303 cut-off events. For 1279277/1279286 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 81761 event pairs, 1889 based on Foata normal form. 6/12077 useless extension candidates. Maximal degree in co-relation 97047. Up to 10393 conditions per place. [2024-06-28 01:21:23,774 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 374 selfloop transitions, 90 changer transitions 0/474 dead transitions. [2024-06-28 01:21:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 474 transitions, 5244 flow [2024-06-28 01:21:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-28 01:21:23,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:21:23,775 INFO L175 Difference]: Start difference. First operand has 297 places, 406 transitions, 3932 flow. Second operand 10 states and 260 transitions. [2024-06-28 01:21:23,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 474 transitions, 5244 flow [2024-06-28 01:21:25,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 474 transitions, 5001 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 01:21:25,786 INFO L231 Difference]: Finished difference. Result has 300 places, 411 transitions, 3978 flow [2024-06-28 01:21:25,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3978, PETRI_PLACES=300, PETRI_TRANSITIONS=411} [2024-06-28 01:21:25,786 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 244 predicate places. [2024-06-28 01:21:25,787 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 411 transitions, 3978 flow [2024-06-28 01:21:25,787 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 01:21:25,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:25,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:25,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:21:25,787 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:25,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash -981292512, now seen corresponding path program 3 times [2024-06-28 01:21:25,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:25,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956378115] [2024-06-28 01:21:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:25,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956378115] [2024-06-28 01:21:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956378115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:21:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613347212] [2024-06-28 01:21:26,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:21:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:21:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:21:27,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:21:27,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 411 transitions, 3978 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 01:21:27,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:27,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:21:27,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:29,995 INFO L124 PetriNetUnfolderBase]: 7846/12403 cut-off events. [2024-06-28 01:21:29,996 INFO L125 PetriNetUnfolderBase]: For 1307973/1307982 co-relation queries the response was YES. [2024-06-28 01:21:30,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98871 conditions, 12403 events. 7846/12403 cut-off events. For 1307973/1307982 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 82578 event pairs, 1898 based on Foata normal form. 6/12177 useless extension candidates. Maximal degree in co-relation 98732. Up to 10472 conditions per place. [2024-06-28 01:21:30,205 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 373 selfloop transitions, 98 changer transitions 0/481 dead transitions. [2024-06-28 01:21:30,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 481 transitions, 5337 flow [2024-06-28 01:21:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-28 01:21:30,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-28 01:21:30,207 INFO L175 Difference]: Start difference. First operand has 300 places, 411 transitions, 3978 flow. Second operand 10 states and 258 transitions. [2024-06-28 01:21:30,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 481 transitions, 5337 flow [2024-06-28 01:21:32,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 481 transitions, 5080 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 01:21:32,397 INFO L231 Difference]: Finished difference. Result has 304 places, 419 transitions, 4074 flow [2024-06-28 01:21:32,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3731, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4074, PETRI_PLACES=304, PETRI_TRANSITIONS=419} [2024-06-28 01:21:32,397 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 248 predicate places. [2024-06-28 01:21:32,397 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 419 transitions, 4074 flow [2024-06-28 01:21:32,398 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 01:21:32,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:32,398 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 01:21:32,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:21:32,398 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:32,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:32,398 INFO L85 PathProgramCache]: Analyzing trace with hash 183490852, now seen corresponding path program 4 times [2024-06-28 01:21:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:32,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539320618] [2024-06-28 01:21:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:32,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539320618] [2024-06-28 01:21:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539320618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:33,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:21:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103501138] [2024-06-28 01:21:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:21:33,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:33,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:21:33,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:21:33,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:21:33,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 419 transitions, 4074 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 01:21:33,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:33,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:21:33,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:36,801 INFO L124 PetriNetUnfolderBase]: 7928/12558 cut-off events. [2024-06-28 01:21:36,801 INFO L125 PetriNetUnfolderBase]: For 1359529/1359538 co-relation queries the response was YES. [2024-06-28 01:21:36,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101574 conditions, 12558 events. 7928/12558 cut-off events. For 1359529/1359538 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 83883 event pairs, 1856 based on Foata normal form. 6/12322 useless extension candidates. Maximal degree in co-relation 101433. Up to 10409 conditions per place. [2024-06-28 01:21:37,004 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 371 selfloop transitions, 107 changer transitions 0/488 dead transitions. [2024-06-28 01:21:37,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 488 transitions, 5810 flow [2024-06-28 01:21:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-28 01:21:37,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522 [2024-06-28 01:21:37,006 INFO L175 Difference]: Start difference. First operand has 304 places, 419 transitions, 4074 flow. Second operand 10 states and 261 transitions. [2024-06-28 01:21:37,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 488 transitions, 5810 flow [2024-06-28 01:21:38,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 488 transitions, 5572 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:38,898 INFO L231 Difference]: Finished difference. Result has 309 places, 423 transitions, 4225 flow [2024-06-28 01:21:38,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3840, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4225, PETRI_PLACES=309, PETRI_TRANSITIONS=423} [2024-06-28 01:21:38,899 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 253 predicate places. [2024-06-28 01:21:38,900 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 423 transitions, 4225 flow [2024-06-28 01:21:38,900 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 01:21:38,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:38,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:38,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:21:38,900 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:38,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:38,901 INFO L85 PathProgramCache]: Analyzing trace with hash -989624382, now seen corresponding path program 5 times [2024-06-28 01:21:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516227035] [2024-06-28 01:21:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:38,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:39,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:39,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516227035] [2024-06-28 01:21:39,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516227035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:39,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:39,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:21:39,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499031796] [2024-06-28 01:21:39,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:39,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:21:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:39,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:21:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:21:39,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:21:39,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 423 transitions, 4225 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 01:21:39,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:39,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:21:39,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:43,702 INFO L124 PetriNetUnfolderBase]: 7920/12527 cut-off events. [2024-06-28 01:21:43,702 INFO L125 PetriNetUnfolderBase]: For 1367114/1367123 co-relation queries the response was YES. [2024-06-28 01:21:43,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100371 conditions, 12527 events. 7920/12527 cut-off events. For 1367114/1367123 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 83550 event pairs, 1913 based on Foata normal form. 6/12297 useless extension candidates. Maximal degree in co-relation 100229. Up to 10582 conditions per place. [2024-06-28 01:21:43,891 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 379 selfloop transitions, 96 changer transitions 0/485 dead transitions. [2024-06-28 01:21:43,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 485 transitions, 5461 flow [2024-06-28 01:21:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:21:43,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2024-06-28 01:21:43,892 INFO L175 Difference]: Start difference. First operand has 309 places, 423 transitions, 4225 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:21:43,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 485 transitions, 5461 flow [2024-06-28 01:21:46,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 485 transitions, 5205 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:46,856 INFO L231 Difference]: Finished difference. Result has 313 places, 423 transitions, 4168 flow [2024-06-28 01:21:46,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3969, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4168, PETRI_PLACES=313, PETRI_TRANSITIONS=423} [2024-06-28 01:21:46,857 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 257 predicate places. [2024-06-28 01:21:46,857 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 423 transitions, 4168 flow [2024-06-28 01:21:46,857 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 01:21:46,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:46,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:46,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:21:46,858 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:46,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1480544557, now seen corresponding path program 2 times [2024-06-28 01:21:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:46,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254082062] [2024-06-28 01:21:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:46,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:48,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:48,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254082062] [2024-06-28 01:21:48,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254082062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:48,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:48,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:48,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117527657] [2024-06-28 01:21:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:48,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:48,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:48,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:48,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:21:48,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 423 transitions, 4168 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:48,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:48,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:21:48,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:51,232 INFO L124 PetriNetUnfolderBase]: 7031/11395 cut-off events. [2024-06-28 01:21:51,232 INFO L125 PetriNetUnfolderBase]: For 1350533/1350569 co-relation queries the response was YES. [2024-06-28 01:21:51,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93749 conditions, 11395 events. 7031/11395 cut-off events. For 1350533/1350569 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 78035 event pairs, 1845 based on Foata normal form. 13/11091 useless extension candidates. Maximal degree in co-relation 93605. Up to 9458 conditions per place. [2024-06-28 01:21:51,396 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 336 selfloop transitions, 65 changer transitions 0/461 dead transitions. [2024-06-28 01:21:51,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 461 transitions, 5430 flow [2024-06-28 01:21:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:21:51,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-28 01:21:51,397 INFO L175 Difference]: Start difference. First operand has 313 places, 423 transitions, 4168 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:21:51,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 461 transitions, 5430 flow [2024-06-28 01:21:53,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 461 transitions, 5182 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-28 01:21:53,910 INFO L231 Difference]: Finished difference. Result has 310 places, 429 transitions, 4198 flow [2024-06-28 01:21:53,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3920, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4198, PETRI_PLACES=310, PETRI_TRANSITIONS=429} [2024-06-28 01:21:53,911 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 254 predicate places. [2024-06-28 01:21:53,911 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 429 transitions, 4198 flow [2024-06-28 01:21:53,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:53,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:53,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:53,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:21:53,912 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:53,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:53,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1874866070, now seen corresponding path program 1 times [2024-06-28 01:21:53,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:53,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799557262] [2024-06-28 01:21:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:53,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:55,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:55,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799557262] [2024-06-28 01:21:55,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799557262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:55,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:55,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33317676] [2024-06-28 01:21:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:55,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:55,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:55,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:21:55,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 429 transitions, 4198 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:55,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:55,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:21:55,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:58,210 INFO L124 PetriNetUnfolderBase]: 6705/10964 cut-off events. [2024-06-28 01:21:58,210 INFO L125 PetriNetUnfolderBase]: For 1369676/1369764 co-relation queries the response was YES. [2024-06-28 01:21:58,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91100 conditions, 10964 events. 6705/10964 cut-off events. For 1369676/1369764 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 76057 event pairs, 1785 based on Foata normal form. 40/10649 useless extension candidates. Maximal degree in co-relation 90957. Up to 8919 conditions per place. [2024-06-28 01:21:58,402 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 340 selfloop transitions, 32 changer transitions 0/466 dead transitions. [2024-06-28 01:21:58,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 466 transitions, 5160 flow [2024-06-28 01:21:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:21:58,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-28 01:21:58,404 INFO L175 Difference]: Start difference. First operand has 310 places, 429 transitions, 4198 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:21:58,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 466 transitions, 5160 flow [2024-06-28 01:22:01,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 466 transitions, 5026 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:01,240 INFO L231 Difference]: Finished difference. Result has 314 places, 432 transitions, 4208 flow [2024-06-28 01:22:01,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4064, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4208, PETRI_PLACES=314, PETRI_TRANSITIONS=432} [2024-06-28 01:22:01,257 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 258 predicate places. [2024-06-28 01:22:01,257 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 432 transitions, 4208 flow [2024-06-28 01:22:01,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:01,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:01,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:01,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:22:01,257 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:01,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1874850198, now seen corresponding path program 3 times [2024-06-28 01:22:01,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460247157] [2024-06-28 01:22:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:02,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460247157] [2024-06-28 01:22:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460247157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:02,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:02,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999715947] [2024-06-28 01:22:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:02,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:02,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:02,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:22:02,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 432 transitions, 4208 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:02,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:02,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:22:02,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:05,516 INFO L124 PetriNetUnfolderBase]: 7161/11617 cut-off events. [2024-06-28 01:22:05,517 INFO L125 PetriNetUnfolderBase]: For 1421629/1421665 co-relation queries the response was YES. [2024-06-28 01:22:05,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96762 conditions, 11617 events. 7161/11617 cut-off events. For 1421629/1421665 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 79899 event pairs, 1849 based on Foata normal form. 15/11310 useless extension candidates. Maximal degree in co-relation 96617. Up to 9641 conditions per place. [2024-06-28 01:22:05,844 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 356 selfloop transitions, 65 changer transitions 0/481 dead transitions. [2024-06-28 01:22:05,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 481 transitions, 5399 flow [2024-06-28 01:22:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:22:05,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2024-06-28 01:22:05,846 INFO L175 Difference]: Start difference. First operand has 314 places, 432 transitions, 4208 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:22:05,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 481 transitions, 5399 flow [2024-06-28 01:22:08,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 481 transitions, 5273 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:08,443 INFO L231 Difference]: Finished difference. Result has 319 places, 449 transitions, 4451 flow [2024-06-28 01:22:08,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4086, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4451, PETRI_PLACES=319, PETRI_TRANSITIONS=449} [2024-06-28 01:22:08,445 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 263 predicate places. [2024-06-28 01:22:08,445 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 449 transitions, 4451 flow [2024-06-28 01:22:08,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:08,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:08,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:08,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:22:08,445 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:08,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1874850663, now seen corresponding path program 3 times [2024-06-28 01:22:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:08,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718174199] [2024-06-28 01:22:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:09,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718174199] [2024-06-28 01:22:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718174199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:09,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:09,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642409401] [2024-06-28 01:22:09,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:09,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:09,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:09,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:22:09,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 449 transitions, 4451 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:09,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:09,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:22:09,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:12,867 INFO L124 PetriNetUnfolderBase]: 7164/11620 cut-off events. [2024-06-28 01:22:12,868 INFO L125 PetriNetUnfolderBase]: For 1441806/1441850 co-relation queries the response was YES. [2024-06-28 01:22:13,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97949 conditions, 11620 events. 7164/11620 cut-off events. For 1441806/1441850 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 79846 event pairs, 1845 based on Foata normal form. 19/11323 useless extension candidates. Maximal degree in co-relation 97801. Up to 9676 conditions per place. [2024-06-28 01:22:13,086 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 361 selfloop transitions, 59 changer transitions 0/480 dead transitions. [2024-06-28 01:22:13,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 480 transitions, 5423 flow [2024-06-28 01:22:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:13,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:22:13,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:22:13,090 INFO L175 Difference]: Start difference. First operand has 319 places, 449 transitions, 4451 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:22:13,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 480 transitions, 5423 flow [2024-06-28 01:22:16,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 480 transitions, 5241 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:16,569 INFO L231 Difference]: Finished difference. Result has 324 places, 449 transitions, 4395 flow [2024-06-28 01:22:16,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4269, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4395, PETRI_PLACES=324, PETRI_TRANSITIONS=449} [2024-06-28 01:22:16,570 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 268 predicate places. [2024-06-28 01:22:16,570 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 449 transitions, 4395 flow [2024-06-28 01:22:16,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:16,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:16,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:16,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:22:16,571 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:16,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -133222322, now seen corresponding path program 3 times [2024-06-28 01:22:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614117797] [2024-06-28 01:22:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:16,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:17,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:17,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614117797] [2024-06-28 01:22:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614117797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:17,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528263922] [2024-06-28 01:22:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:17,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:22:17,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 449 transitions, 4395 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:17,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:17,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:22:17,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:20,183 INFO L124 PetriNetUnfolderBase]: 7752/12360 cut-off events. [2024-06-28 01:22:20,183 INFO L125 PetriNetUnfolderBase]: For 1465106/1465166 co-relation queries the response was YES. [2024-06-28 01:22:20,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101205 conditions, 12360 events. 7752/12360 cut-off events. For 1465106/1465166 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 83602 event pairs, 1957 based on Foata normal form. 37/12145 useless extension candidates. Maximal degree in co-relation 101055. Up to 10657 conditions per place. [2024-06-28 01:22:20,550 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 403 selfloop transitions, 30 changer transitions 0/477 dead transitions. [2024-06-28 01:22:20,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 477 transitions, 5370 flow [2024-06-28 01:22:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:22:20,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-28 01:22:20,551 INFO L175 Difference]: Start difference. First operand has 324 places, 449 transitions, 4395 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:22:20,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 477 transitions, 5370 flow [2024-06-28 01:22:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 477 transitions, 5176 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:23,998 INFO L231 Difference]: Finished difference. Result has 324 places, 449 transitions, 4267 flow [2024-06-28 01:22:23,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4201, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4267, PETRI_PLACES=324, PETRI_TRANSITIONS=449} [2024-06-28 01:22:23,999 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 268 predicate places. [2024-06-28 01:22:23,999 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 449 transitions, 4267 flow [2024-06-28 01:22:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:23,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:24,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:24,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:22:24,000 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:24,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1239917192, now seen corresponding path program 4 times [2024-06-28 01:22:24,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119883773] [2024-06-28 01:22:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119883773] [2024-06-28 01:22:25,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119883773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:25,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:25,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964306457] [2024-06-28 01:22:25,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:25,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:25,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:25,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:25,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:22:25,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 449 transitions, 4267 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:25,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:25,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:22:25,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand